进程1-client

#include <stdio.h>
#include <stdlib.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <unistd.h>
#include <string.h>

#define SHM_SIZE 10 * 1024 * 1024  // 共享内存大小为10M
#define WRITE_INTERVAL 1           // 写入间隔为1秒

int main() {
    key_t key = ftok("shared_memory", 1234);  // 生成一个唯一的key
    int shmid = shmget(key, SHM_SIZE, IPC_CREAT | 0666);  // 创建共享内存
    if (shmid == -1) {
        perror("shmget");
        exit(1);
    }

    char *shmaddr = shmat(shmid, NULL, 0);  // 连接共享内存
    if (shmaddr == (char *) -1) {
        perror("shmat");
        exit(1);
    }

    int counter = 0;
    while (1) {
        printf("进程1：写入数据到共享内存...\n");
        sprintf(shmaddr, "Message %d from Process 1", counter);

        counter++;

        sleep(WRITE_INTERVAL);
    }

    shmdt(shmaddr);  // 分离共享内存

    return 0;
}

进程2-server

#include <stdio.h>
#include <stdlib.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <unistd.h>

#define SHM_SIZE 10 * 1024 * 1024  // 共享内存大小为10M
#define READ_INTERVAL 1            // 读取间隔为1秒

int main() {
    key_t key = ftok("shared_memory", 1234);  // 使用与进程1相同的key
    int shmid = shmget(key, SHM_SIZE, 0666);  // 获取共享内存
    if (shmid == -1) {
        perror("shmget");
        exit(1);
    }

    char *shmaddr = shmat(shmid, NULL, 0);  // 连接共享内存
    if (shmaddr == (char *) -1) {
        perror("shmat");
        exit(1);
    }

    while (1) {
        printf("进程2：从共享内存读取数据...\n");
        printf("进程2读取到的数据：%s\n", shmaddr);

        sleep(READ_INTERVAL);
    }

    shmdt(shmaddr);  // 分离共享内存

    return 0;
}

测试树莓派系统

树莓派版本

pi@raspberrypi:~/test $ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 11 (bullseye)
Release: 11

共享内存

在这里插入图片描述

status

client

pi@raspberrypi:/proc/289052 $ cat status
Name: client
Umask: 0022
State: S (sleeping)
Tgid: 289052
Ngid: 0
Pid: 289052
PPid: 243037
TracerPid: 0
Uid: 1000 1000 1000 1000
Gid: 1000 1000 1000 1000
FDSize: 256
Groups: 4 20 24 27 29 44 46 60 100 104 106 108 117 995 997 998 999 1000
NStgid: 289052
NSpid: 289052
NSpgid: 289052
NSsid: 243037
VmPeak: 12176 kB
VmSize: 12176 kB
VmLck: 0 kB
VmPin: 0 kB
VmHWM: 452 kB
VmRSS: 452 kB
RssAnon: 64 kB
RssFile: 388 kB
RssShmem: 0 kB
VmData: 172 kB
VmStk: 132 kB
VmExe: 4 kB
VmLib: 1536 kB
VmPTE: 36 kB
VmSwap: 0 kB
CoreDumping: 0
THP_enabled: 0
Threads: 1
SigQ: 0/29185
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000000000000
SigCgt: 0000000000000000
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: 000001ffffffffff
CapAmb: 0000000000000000
NoNewPrivs: 0
Seccomp: 0
Seccomp_filters: 0
Speculation_Store_Bypass: vulnerable
SpeculationIndirectBranch: unknown
Cpus_allowed: f
Cpus_allowed_list: 0-3
Mems_allowed: 1
Mems_allowed_list: 0
voluntary_ctxt_switches: 23
nonvoluntary_ctxt_switches: 0

server

Name: server
Umask: 0022
State: S (sleeping)
Tgid: 289053
Ngid: 0
Pid: 289053
PPid: 244645
TracerPid: 0
Uid: 1000 1000 1000 1000
Gid: 1000 1000 1000 1000
FDSize: 256
Groups: 4 20 24 27 29 44 46 60 100 104 106 108 117 995 997 998 999 1000
NStgid: 289053
NSpid: 289053
NSpgid: 289053
NSsid: 244645
VmPeak: 12176 kB
VmSize: 12176 kB
VmLck: 0 kB
VmPin: 0 kB
VmHWM: 520 kB
VmRSS: 520 kB
RssAnon: 64 kB
RssFile: 456 kB
RssShmem: 0 kB
VmData: 172 kB
VmStk: 132 kB
VmExe: 4 kB
VmLib: 1536 kB
VmPTE: 36 kB
VmSwap: 0 kB
CoreDumping: 0
THP_enabled: 0
Threads: 1
SigQ: 0/29185
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000000000000
SigCgt: 0000000000000000
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: 000001ffffffffff
CapAmb: 0000000000000000
NoNewPrivs: 0
Seccomp: 0
Seccomp_filters: 0
Speculation_Store_Bypass: vulnerable
SpeculationIndirectBranch: unknown
Cpus_allowed: f
Cpus_allowed_list: 0-3
Mems_allowed: 1
Mems_allowed_list: 0
voluntary_ctxt_switches: 108
nonvoluntary_ctxt_switches: 88

maps

client

pi@raspberrypi:/proc/289052 $ cat maps
55561b0000-55561b1000 r-xp 00000000 b3:02 820387 /home/pi/test/client
55561c0000-55561c1000 r–p 00000000 b3:02 820387 /home/pi/test/client
55561c1000-55561c2000 rw-p 00001000 b3:02 820387 /home/pi/test/client
555f133000-555f154000 rw-p 00000000 00:00 0 [heap]
7f7ec93000-7f7f693000 rw-s 00000000 00:01 13 /SYSVffffffff (deleted)
7f7f693000-7f7f7f0000 r-xp 00000000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
7f7f7f0000-7f7f7ff000 —p 0015d000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
7f7f7ff000-7f7f803000 r–p 0015c000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
7f7f803000-7f7f805000 rw-p 00160000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
7f7f805000-7f7f808000 rw-p 00000000 00:00 0
7f7f81a000-7f7f83c000 r-xp 00000000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
7f7f846000-7f7f848000 rw-p 00000000 00:00 0
7f7f848000-7f7f84a000 r–p 00000000 00:00 0 [vvar]
7f7f84a000-7f7f84b000 r-xp 00000000 00:00 0 [vdso]
7f7f84b000-7f7f84c000 r–p 00021000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
7f7f84c000-7f7f84e000 rw-p 00022000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
7fdc352000-7fdc373000 rw-p 00000000 00:00 0 [stack]

server

smaps

5591100000-5591101000 r-xp 00000000 b3:02 820384 /home/pi/test/server
5591110000-5591111000 r–p 00000000 b3:02 820384 /home/pi/test/server
5591111000-5591112000 rw-p 00001000 b3:02 820384 /home/pi/test/server
5597223000-5597244000 rw-p 00000000 00:00 0 [heap]
7fa9ba2000-7faa5a2000 rw-s 00000000 00:01 13 /SYSVffffffff (deleted)
7faa5a2000-7faa6ff000 r-xp 00000000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
7faa6ff000-7faa70e000 —p 0015d000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
7faa70e000-7faa712000 r–p 0015c000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
7faa712000-7faa714000 rw-p 00160000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
7faa714000-7faa717000 rw-p 00000000 00:00 0
7faa729000-7faa74b000 r-xp 00000000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
7faa755000-7faa757000 rw-p 00000000 00:00 0
7faa757000-7faa759000 r–p 00000000 00:00 0 [vvar]
7faa759000-7faa75a000 r-xp 00000000 00:00 0 [vdso]
7faa75a000-7faa75b000 r–p 00021000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
7faa75b000-7faa75d000 rw-p 00022000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
7fd5d0e000-7fd5d2f000 rw-p 00000000 00:00 0 [stack]

client

pi@raspberrypi:/proc/289052 $ cat smaps
55561b0000-55561b1000 r-xp 00000000 b3:02 820387 /home/pi/test/client
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 4 kB
Private_Dirty: 0 kB
Referenced: 4 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me
55561c0000-55561c1000 r–p 00000000 b3:02 820387 /home/pi/test/client
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr mw me ac
55561c1000-55561c2000 rw-p 00001000 b3:02 820387 /home/pi/test/client
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
555f133000-555f154000 rw-p 00000000 00:00 0 [heap]
Size: 132 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7f7ec93000-7f7f693000 rw-s 00000000 00:01 13 /SYSVffffffff (deleted)
Size: 10240 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 2 kB
Pss_Dirty: 2 kB
Shared_Clean: 0 kB
Shared_Dirty: 4 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 4 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr sh mr mw me ms
7f7f693000-7f7f7f0000 r-xp 00000000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
Size: 1396 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 936 kB
Pss: 11 kB
Pss_Dirty: 0 kB
Shared_Clean: 936 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 936 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me
7f7f7f0000-7f7f7ff000 —p 0015d000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
Size: 60 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 0 kB
Pss: 0 kB
Pss_Dirty: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 0 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: mr mw me
7f7f7ff000-7f7f803000 r–p 0015c000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
Size: 16 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 16 kB
Pss: 16 kB
Pss_Dirty: 16 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 16 kB
Referenced: 16 kB
Anonymous: 16 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr mw me ac
7f7f803000-7f7f805000 rw-p 00160000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
Size: 8 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 8 kB
Pss: 8 kB
Pss_Dirty: 8 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 8 kB
Referenced: 8 kB
Anonymous: 8 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7f7f805000-7f7f808000 rw-p 00000000 00:00 0
Size: 12 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 12 kB
Pss: 12 kB
Pss_Dirty: 12 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 12 kB
Referenced: 12 kB
Anonymous: 12 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7f7f81a000-7f7f83c000 r-xp 00000000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
Size: 136 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 136 kB
Pss: 1 kB
Pss_Dirty: 0 kB
Shared_Clean: 136 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 136 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me
7f7f846000-7f7f848000 rw-p 00000000 00:00 0
Size: 8 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 8 kB
Pss: 8 kB
Pss_Dirty: 8 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 8 kB
Referenced: 8 kB
Anonymous: 8 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7f7f848000-7f7f84a000 r–p 00000000 00:00 0 [vvar]
Size: 8 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 0 kB
Pss: 0 kB
Pss_Dirty: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 0 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr pf de
7f7f84a000-7f7f84b000 r-xp 00000000 00:00 0 [vdso]
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 0 kB
Pss_Dirty: 0 kB
Shared_Clean: 4 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 4 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me de
7f7f84b000-7f7f84c000 r–p 00021000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr mw me ac
7f7f84c000-7f7f84e000 rw-p 00022000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
Size: 8 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 8 kB
Pss: 8 kB
Pss_Dirty: 8 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 8 kB
Referenced: 8 kB
Anonymous: 8 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7fdc352000-7fdc373000 rw-p 00000000 00:00 0 [stack]
Size: 132 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 12 kB
Pss: 12 kB
Pss_Dirty: 12 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 12 kB
Referenced: 12 kB
Anonymous: 12 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me gd ac

server

pi@raspberrypi:/proc/289053 $ cat smaps
5591100000-5591101000 r-xp 00000000 b3:02 820384 /home/pi/test/server
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 4 kB
Private_Dirty: 0 kB
Referenced: 4 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me
5591110000-5591111000 r–p 00000000 b3:02 820384 /home/pi/test/server
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr mw me ac
5591111000-5591112000 rw-p 00001000 b3:02 820384 /home/pi/test/server
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
5597223000-5597244000 rw-p 00000000 00:00 0 [heap]
Size: 132 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7fa9ba2000-7faa5a2000 rw-s 00000000 00:01 13 /SYSVffffffff (deleted)
Size: 10240 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 2 kB
Pss_Dirty: 2 kB
Shared_Clean: 0 kB
Shared_Dirty: 4 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 4 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr sh mr mw me ms
7faa5a2000-7faa6ff000 r-xp 00000000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
Size: 1396 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 944 kB
Pss: 11 kB
Pss_Dirty: 0 kB
Shared_Clean: 944 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 944 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me
7faa6ff000-7faa70e000 —p 0015d000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
Size: 60 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 0 kB
Pss: 0 kB
Pss_Dirty: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 0 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: mr mw me
7faa70e000-7faa712000 r–p 0015c000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
Size: 16 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 16 kB
Pss: 16 kB
Pss_Dirty: 16 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 16 kB
Referenced: 16 kB
Anonymous: 16 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr mw me ac
7faa712000-7faa714000 rw-p 00160000 b3:02 7127 /usr/lib/aarch64-linux-gnu/libc-2.31.so
Size: 8 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 8 kB
Pss: 8 kB
Pss_Dirty: 8 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 8 kB
Referenced: 8 kB
Anonymous: 8 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7faa714000-7faa717000 rw-p 00000000 00:00 0
Size: 12 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 12 kB
Pss: 12 kB
Pss_Dirty: 12 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 12 kB
Referenced: 12 kB
Anonymous: 12 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7faa729000-7faa74b000 r-xp 00000000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
Size: 136 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 136 kB
Pss: 1 kB
Pss_Dirty: 0 kB
Shared_Clean: 136 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 136 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me
7faa755000-7faa757000 rw-p 00000000 00:00 0
Size: 8 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 8 kB
Pss: 8 kB
Pss_Dirty: 8 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 8 kB
Referenced: 8 kB
Anonymous: 8 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7faa757000-7faa759000 r–p 00000000 00:00 0 [vvar]
Size: 8 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 0 kB
Pss: 0 kB
Pss_Dirty: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 0 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr pf de
7faa759000-7faa75a000 r-xp 00000000 00:00 0 [vdso]
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 0 kB
Pss_Dirty: 0 kB
Shared_Clean: 4 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 4 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me de
7faa75a000-7faa75b000 r–p 00021000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Pss_Dirty: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr mw me ac
7faa75b000-7faa75d000 rw-p 00022000 b3:02 6950 /usr/lib/aarch64-linux-gnu/ld-2.31.so
Size: 8 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 8 kB
Pss: 8 kB
Pss_Dirty: 8 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 8 kB
Referenced: 8 kB
Anonymous: 8 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac
7fd5d0e000-7fd5d2f000 rw-p 00000000 00:00 0 [stack]
Size: 132 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 12 kB
Pss: 12 kB
Pss_Dirty: 12 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 12 kB
Referenced: 12 kB
Anonymous: 12 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me gd ac

测试系统2

douding@douding-HP-Z420-Workstation:/proc/19671$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.6 LTS
Release: 18.04
Codename: bionic

status

client

douding@douding-HP-Z420-Workstation:/proc/19671$ cat status
Name: client
Umask: 0002
State: S (sleeping)
Tgid: 19671
Ngid: 0
Pid: 19671
PPid: 19557
TracerPid: 0
Uid: 1000 1000 1000 1000
Gid: 1000 1000 1000 1000
FDSize: 256
Groups: 4 20 24 27 30 46 116 126 1000
NStgid: 19671
NSpid: 19671
NSpgid: 19671
NSsid: 19557
VmPeak: 14756 kB
VmSize: 14756 kB
VmLck: 0 kB
VmPin: 0 kB
VmHWM: 784 kB
VmRSS: 784 kB
RssAnon: 64 kB
RssFile: 720 kB
RssShmem: 0 kB
VmData: 176 kB
VmStk: 132 kB
VmExe: 4 kB
VmLib: 2120 kB
VmPTE: 56 kB
VmSwap: 0 kB
HugetlbPages: 0 kB
CoreDumping: 0
THP_enabled: 1
Threads: 1
SigQ: 0/256774
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000000000000
SigCgt: 0000000000000000
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: 0000003fffffffff
CapAmb: 0000000000000000
NoNewPrivs: 0
Seccomp: 0
Speculation_Store_Bypass: thread vulnerable
Cpus_allowed: ffffff
Cpus_allowed_list: 0-23
Mems_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
Mems_allowed_list: 0
voluntary_ctxt_switches: 35
nonvoluntary_ctxt_switches: 1

server

douding@douding-HP-Z420-Workstation:/proc/19735$ cat status
Name: server
Umask: 0002
State: S (sleeping)
Tgid: 19735
Ngid: 0
Pid: 19735
PPid: 19721
TracerPid: 0
Uid: 1000 1000 1000 1000
Gid: 1000 1000 1000 1000
FDSize: 256
Groups: 4 20 24 27 30 46 116 126 1000
NStgid: 19735
NSpid: 19735
NSpgid: 19735
NSsid: 19721
VmPeak: 14756 kB
VmSize: 14756 kB
VmLck: 0 kB
VmPin: 0 kB
VmHWM: 708 kB
VmRSS: 708 kB
RssAnon: 64 kB
RssFile: 644 kB
RssShmem: 0 kB
VmData: 176 kB
VmStk: 132 kB
VmExe: 4 kB
VmLib: 2120 kB
VmPTE: 56 kB
VmSwap: 0 kB
HugetlbPages: 0 kB
CoreDumping: 0
THP_enabled: 1
Threads: 1
SigQ: 0/256774
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000000000000
SigCgt: 0000000000000000
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: 0000003fffffffff
CapAmb: 0000000000000000
NoNewPrivs: 0
Seccomp: 0
Speculation_Store_Bypass: thread vulnerable
Cpus_allowed: ffffff
Cpus_allowed_list: 0-23
Mems_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
Mems_allowed_list: 0
voluntary_ctxt_switches: 195
nonvoluntary_ctxt_switches: 0

maps

client

douding@douding-HP-Z420-Workstation:/proc/19671$ cat maps
563c3945e000-563c3945f000 r-xp 00000000 103:02 35389472 /home/douding/test/client
563c3965e000-563c3965f000 r–p 00000000 103:02 35389472 /home/douding/test/client
563c3965f000-563c39660000 rw-p 00001000 103:02 35389472 /home/douding/test/client
563c39881000-563c398a2000 rw-p 00000000 00:00 0 [heap]
7fb5685ab000-7fb568fab000 rw-s 00000000 00:01 4620314 /SYSVffffffff (deleted)
7fb568fab000-7fb569192000 r-xp 00000000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
7fb569192000-7fb569392000 —p 001e7000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
7fb569392000-7fb569396000 r–p 001e7000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
7fb569396000-7fb569398000 rw-p 001eb000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
7fb569398000-7fb56939c000 rw-p 00000000 00:00 0
7fb56939c000-7fb5693c5000 r-xp 00000000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
7fb56959b000-7fb56959d000 rw-p 00000000 00:00 0
7fb5695c5000-7fb5695c6000 r–p 00029000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
7fb5695c6000-7fb5695c7000 rw-p 0002a000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
7fb5695c7000-7fb5695c8000 rw-p 00000000 00:00 0
7ffddeb51000-7ffddeb72000 rw-p 00000000 00:00 0 [stack]
7ffddeba7000-7ffddebaa000 r–p 00000000 00:00 0 [vvar]
7ffddebaa000-7ffddebac000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]

server

douding@douding-HP-Z420-Workstation:/proc/19735$ cat maps
565061dae000-565061daf000 r-xp 00000000 103:02 35465607 /home/douding/test/server
565061fae000-565061faf000 r–p 00000000 103:02 35465607 /home/douding/test/server
565061faf000-565061fb0000 rw-p 00001000 103:02 35465607 /home/douding/test/server
565062a72000-565062a93000 rw-p 00000000 00:00 0 [heap]
7ff844739000-7ff845139000 rw-s 00000000 00:01 4620314 /SYSVffffffff (deleted)
7ff845139000-7ff845320000 r-xp 00000000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
7ff845320000-7ff845520000 —p 001e7000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
7ff845520000-7ff845524000 r–p 001e7000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
7ff845524000-7ff845526000 rw-p 001eb000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
7ff845526000-7ff84552a000 rw-p 00000000 00:00 0
7ff84552a000-7ff845553000 r-xp 00000000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
7ff845729000-7ff84572b000 rw-p 00000000 00:00 0
7ff845753000-7ff845754000 r–p 00029000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
7ff845754000-7ff845755000 rw-p 0002a000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
7ff845755000-7ff845756000 rw-p 00000000 00:00 0
7ffc10547000-7ffc10568000 rw-p 00000000 00:00 0 [stack]
7ffc1057b000-7ffc1057e000 r–p 00000000 00:00 0 [vvar]
7ffc1057e000-7ffc10580000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]

smaps

client

douding@douding-HP-Z420-Workstation:/proc/19671$ cat smaps
563c3945e000-563c3945f000 r-xp 00000000 103:02 35389472 /home/douding/test/client
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 4 kB
Private_Dirty: 0 kB
Referenced: 4 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me dw sd
563c3965e000-563c3965f000 r–p 00000000 103:02 35389472 /home/douding/test/client
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd mr mw me dw ac sd
563c3965f000-563c39660000 rw-p 00001000 103:02 35389472 /home/douding/test/client
Size: 4 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me dw ac sd
563c39881000-563c398a2000 rw-p 00000000 00:00 0 [heap]
Size: 132 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 4 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 4 kB
Referenced: 4 kB
Anonymous: 4 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr mr mw me ac sd
7fb5685ab000-7fb568fab000 rw-s 00000000 00:01 4620314 /SYSVffffffff (deleted)
Size: 10240 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 4 kB
Pss: 2 kB
Shared_Clean: 0 kB
Shared_Dirty: 4 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 4 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd wr sh mr mw me ms sd
7fb568fab000-7fb569192000 r-xp 00000000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
Size: 1948 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 1116 kB
Pss: 9 kB
Shared_Clean: 1116 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 1116 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: rd ex mr mw me sd
7fb569192000-7fb569392000 —p 001e7000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
Size: 2048 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 0 kB
Pss: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 0 kB
Anonymous: 0 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
ShmemPmdMapped: 0 kB
FilePmdMapped: 0 kB
Shared_Hugetlb: 0 kB
Private_Hugetlb: 0 kB
Swap: 0 kB
SwapPss: 0 kB
Locked: 0 kB
THPeligible: 0
VmFlags: mr mw me sd
7fb569392000-7fb569396000 r–p 001e7000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
Size: 16 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Rss: 16 kB
Pss: 16 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 16 kB
Referenced: 16 kB
Anonymous: 16 kB
LazyFree: 0 kB
AnonHugePages: 0 kB
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7fb569398000-7fb56939c000 rw-p 00000000 00:00 0
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7fb56939c000-7fb5693c5000 r-xp 00000000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
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7fb56959b000-7fb56959d000 rw-p 00000000 00:00 0
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7fb5695c7000-7fb5695c8000 rw-p 00000000 00:00 0
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7ffddeb51000-7ffddeb72000 rw-p 00000000 00:00 0 [stack]
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7ffddeba7000-7ffddebaa000 r–p 00000000 00:00 0 [vvar]
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7ffddebaa000-7ffddebac000 r-xp 00000000 00:00 0 [vdso]
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ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]
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server

douding@douding-HP-Z420-Workstation:/proc/19735$ cat smaps
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565061fae000-565061faf000 r–p 00000000 103:02 35465607 /home/douding/test/server
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565061faf000-565061fb0000 rw-p 00001000 103:02 35465607 /home/douding/test/server
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565062a72000-565062a93000 rw-p 00000000 00:00 0 [heap]
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7ff844739000-7ff845139000 rw-s 00000000 00:01 4620314 /SYSVffffffff (deleted)
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7ff845139000-7ff845320000 r-xp 00000000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
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7ff845320000-7ff845520000 —p 001e7000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
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7ff845524000-7ff845526000 rw-p 001eb000 103:02 23068754 /lib/x86_64-linux-gnu/libc-2.27.so
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7ff845526000-7ff84552a000 rw-p 00000000 00:00 0
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7ff84552a000-7ff845553000 r-xp 00000000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
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7ff845729000-7ff84572b000 rw-p 00000000 00:00 0
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7ff845754000-7ff845755000 rw-p 0002a000 103:02 23068678 /lib/x86_64-linux-gnu/ld-2.27.so
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7ff845755000-7ff845756000 rw-p 00000000 00:00 0
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7ffc10547000-7ffc10568000 rw-p 00000000 00:00 0 [stack]
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7ffc1057b000-7ffc1057e000 r–p 00000000 00:00 0 [vvar]
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7ffc1057e000-7ffc10580000 r-xp 00000000 00:00 0 [vdso]
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ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]
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