async-profiler 容器使用常见问题

Failed to inject profiler

• log

Failed to inject profiler into 1830

 linux-vdso.so.1 => (0x00007ffdf25de000)

 libdl.so.2 => /lib64/libdl.so.2 (0x00007f1fcba93000)

 libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f1fcb877000)

 librt.so.1 => /lib64/librt.so.1 (0x00007f1fcb66f000)

 libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f1fcb368000)

 libm.so.6 => /lib64/libm.so.6 (0x00007f1fcb066000)

 libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f1fcae50000)

 libc.so.6 => /lib64/libc.so.6 (0x00007f1fcaa82000)

 /lib64/ld-linux-x86-64.so.2 (0x00007f1fcc2c6000)

 

 

• strace 信息

execve("./profiler.sh", ["./profiler.sh", "-d", "30", "1830"], [/* 35 vars */]) = 0

brk(NULL) = 0x196a000

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff8cb6f3000

access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)

open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3

fstat(3, {st_mode=S_IFREG|0644, st_size=50075, ...}) = 0

mmap(NULL, 50075, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ff8cb6e6000

close(3) = 0

open("/lib64/libtinfo.so.5", O_RDONLY|O_CLOEXEC) = 3

read(3, "177ELF2113>1@316"..., 832) = 832

fstat(3, {st_mode=S_IFREG|0755, st_size=174576, ...}) = 0

mmap(NULL, 2268928, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ff8cb2a9000

mprotect(0x7ff8cb2ce000, 2097152, PROT_NONE) = 0

mmap(0x7ff8cb4ce000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x25000) = 0x7ff8cb4ce000

close(3) = 0

open("/lib64/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3

read(3, "177ELF2113>1220
"..., 832) = 832

fstat(3, {st_mode=S_IFREG|0755, st_size=19288, ...}) = 0

mmap(NULL, 2109712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ff8cb0a5000

mprotect(0x7ff8cb0a7000, 2097152, PROT_NONE) = 0

mmap(0x7ff8cb2a7000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7ff8cb2a7000

close(3) = 0

open("/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = 3

read(3, "177ELF21133>120&2"..., 832) = 832

fstat(3, {st_mode=S_IFREG|0755, st_size=2156160, ...}) = 0

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff8cb6e5000

mmap(NULL, 3985888, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ff8cacd7000

mprotect(0x7ff8cae9a000, 2097152, PROT_NONE) = 0

mmap(0x7ff8cb09a000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c3000) = 0x7ff8cb09a000

mmap(0x7ff8cb0a0000, 16864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7ff8cb0a0000

close(3) = 0

mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff8cb6e3000

arch_prctl(ARCH_SET_FS, 0x7ff8cb6e3740) = 0

mprotect(0x7ff8cb09a000, 16384, PROT_READ) = 0

mprotect(0x7ff8cb2a7000, 4096, PROT_READ) = 0

mprotect(0x7ff8cb4ce000, 16384, PROT_READ) = 0

mprotect(0x6dd000, 4096, PROT_READ) = 0

mprotect(0x7ff8cb6f4000, 4096, PROT_READ) = 0

munmap(0x7ff8cb6e6000, 50075) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

open("/dev/tty", O_RDWR|O_NONBLOCK) = 3

close(3) = 0

brk(NULL) = 0x196a000

brk(0x198b000) = 0x198b000

brk(NULL) = 0x198b000

open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3

fstat(3, {st_mode=S_IFREG|0644, st_size=106075056, ...}) = 0

mmap(NULL, 106075056, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ff8c47ad000

close(3) = 0

brk(NULL) = 0x198b000

getuid() = 0

getgid() = 0

geteuid() = 0

getegid() = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

open("/proc/meminfo", O_RDONLY|O_CLOEXEC) = 3

fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff8cb6f2000

read(3, "MemTotal: 3880264 kB
MemF"..., 1024) = 1024

close(3) = 0

munmap(0x7ff8cb6f2000, 4096) = 0

rt_sigaction(SIGCHLD, {SIG_DFL, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, {SIG_DFL, [], 0}, 8) = 0

rt_sigaction(SIGCHLD, {SIG_DFL, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, 8) = 0

rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], 0}, 8) = 0

rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

rt_sigaction(SIGQUIT, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], 0}, 8) = 0

rt_sigaction(SIGQUIT, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigaction(SIGQUIT, {SIG_IGN, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

uname({sysname="Linux", nodename="iZ2zecw7m6bmthkpmft9d8Z", ...}) = 0

stat("/opt/java-perf-tools", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

getpid() = 2021

open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3

fstat(3, {st_mode=S_IFREG|0644, st_size=26254, ...}) = 0

mmap(NULL, 26254, PROT_READ, MAP_SHARED, 3, 0) = 0x7ff8cb6ec000

close(3) = 0

getppid() = 2019

getpgrp() = 2019

rt_sigaction(SIGCHLD, {0x4413f0, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, 8) = 0

getrlimit(RLIMIT_NPROC, {rlim_cur=15076, rlim_max=15076}) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

open("./profiler.sh", O_RDONLY) = 3

ioctl(3, TCGETS, 0x7ffff7093d20) = -1 ENOTTY (Inappropriate ioctl for device)

lseek(3, 0, SEEK_CUR) = 0

read(3, "#!/bin/bash

usage() {
 echo "..., 80) = 80

lseek(3, 0, SEEK_SET) = 0

getrlimit(RLIMIT_NOFILE, {rlim_cur=65535, rlim_max=65535}) = 0

fcntl(255, F_GETFD) = -1 EBADF (Bad file descriptor)

dup2(3, 255) = 255

close(3) = 0

fcntl(255, F_SETFD, FD_CLOEXEC) = 0

fcntl(255, F_GETFL) = 0x8000 (flags O_RDONLY|O_LARGEFILE)

fstat(255, {st_mode=S_IFREG|0755, st_size=6588, ...}) = 0

lseek(255, 0, SEEK_CUR) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

read(255, "#!/bin/bash

usage() {
 echo "..., 6588) = 6588

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

pipe([3, 4]) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0

lseek(255, -3578, SEEK_CUR) = 3010

clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7ff8cb6e3a10) = 2022

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigaction(SIGCHLD, {0x4413f0, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, {0x4413f0, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, 8) = 0

close(4) = 0

read(3, "Linux
", 128) = 6

read(3, "", 128) = 0

--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---

wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 2022

wait4(-1, 0x7ffff7093090, WNOHANG, NULL) = -1 ECHILD (No child processes)

rt_sigreturn({mask=[]}) = 0

close(3) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0

rt_sigaction(SIGINT, {0x43e860, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, {0x43e860, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

read(255, "SCRIPT_DIR=$(dirname "$(abspath "..., 6588) = 3578

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

pipe([3, 4]) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0

lseek(255, -3538, SEEK_CUR) = 3050

clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7ff8cb6e3a10) = 2023

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigaction(SIGCHLD, {0x4413f0, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, {0x4413f0, [], SA_RESTORER|SA_RESTART, 0x7ff8cad0d3b0}, 8) = 0

close(4) = 0

read(3, "/opt/java-perf-tools
", 128) = 21

read(3, "", 128) = 0

--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2023, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---

wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 2023

wait4(-1, 0x7ffff7093090, WNOHANG, NULL) = -1 ECHILD (No child processes)

rt_sigreturn({mask=[]}) = 0

close(3) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0

rt_sigaction(SIGINT, {0x43e860, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, {0x43e860, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

read(255, "JATTACH=$SCRIPT_DIR/build/jattac"..., 6588) = 3538

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [INT CHLD], 8) = 0

rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0

clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7ff8cb6e3a10) = 2026

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0

rt_sigaction(SIGINT, {0x43e860, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 255}], 0, NULL) = 2026

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2026, si_uid=0, si_status=255, si_utime=0, si_stime=0} ---

wait4(-1, 0x7ffff7092a90, WNOHANG, NULL) = -1 ECHILD (No child processes)

rt_sigreturn({mask=[]}) = 0

rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, {0x43e860, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff8cb6eb000

write(1, "Failed to inject profiler into 1"..., 36Failed to inject profiler into 1830

) = 36

rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

stat("/root/.sdkman/candidates/maven/current/bin/ldd", 0x7ffff7092af0) = -1 ENOENT (No such file or directory)

stat("/root/.sdkman/candidates/java/current/bin/ldd", 0x7ffff7092af0) = -1 ENOENT (No such file or directory)

stat("/usr/local/sbin/ldd", 0x7ffff7092af0) = -1 ENOENT (No such file or directory)

stat("/usr/local/bin/ldd", 0x7ffff7092af0) = -1 ENOENT (No such file or directory)

stat("/usr/sbin/ldd", 0x7ffff7092af0) = -1 ENOENT (No such file or directory)

stat("/usr/bin/ldd", {st_mode=S_IFREG|0755, st_size=5302, ...}) = 0

stat("/usr/bin/ldd", {st_mode=S_IFREG|0755, st_size=5302, ...}) = 0

geteuid() = 0

getegid() = 0

getuid() = 0

getgid() = 0

access("/usr/bin/ldd", X_OK) = 0

stat("/usr/bin/ldd", {st_mode=S_IFREG|0755, st_size=5302, ...}) = 0

geteuid() = 0

getegid() = 0

getuid() = 0

getgid() = 0

access("/usr/bin/ldd", R_OK) = 0

stat("/usr/bin/ldd", {st_mode=S_IFREG|0755, st_size=5302, ...}) = 0

stat("/usr/bin/ldd", {st_mode=S_IFREG|0755, st_size=5302, ...}) = 0

geteuid() = 0

getegid() = 0

getuid() = 0

getgid() = 0

access("/usr/bin/ldd", X_OK) = 0

stat("/usr/bin/ldd", {st_mode=S_IFREG|0755, st_size=5302, ...}) = 0

geteuid() = 0

getegid() = 0

getuid() = 0

getgid() = 0

access("/usr/bin/ldd", R_OK) = 0

rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0

clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7ff8cb6e3a10) = 2027

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0

rt_sigaction(SIGINT, {0x43e860, [], SA_RESTORER, 0x7ff8cad0d3b0}, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

wait4(-1, linux-vdso.so.1 => (0x00007ffdf4943000)

 libdl.so.2 => /lib64/libdl.so.2 (0x00007ff40d462000)

 libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ff40d246000)

 librt.so.1 => /lib64/librt.so.1 (0x00007ff40d03e000)

 libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007ff40cd37000)

 libm.so.6 => /lib64/libm.so.6 (0x00007ff40ca35000)

 libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007ff40c81f000)

 libc.so.6 => /lib64/libc.so.6 (0x00007ff40c451000)

 /lib64/ld-linux-x86-64.so.2 (0x00007ff40dc95000)

[{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 2027

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2027, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---

wait4(-1, 0x7ffff7092610, WNOHANG, NULL) = -1 ECHILD (No child processes)

rt_sigreturn({mask=[]}) = 0

rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7ff8cad0d3b0}, {0x43e860, [], SA_RESTORER, 0x7ff8cad0d3b0}, 8) = 0

rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0

exit_group(255) = ?

+++ exited with 255 +++

 

• 解决方法
  容器需要挂载相同的关于async-profiler信息，可以参考https://github.com/jvm-profiling-tools/async-profiler#troubleshooting

Perf events unavailble. See stderr of the target process.

这个问题官方也有介绍，有几种解决方法，如果都不好修改的话，可以使用-e itimer 模式的,一个参考命令，当然kernel的调用
栈无法处理

 

./profiler.sh -d 30 -e itimer `pid of java` 

• 修改内核参数的方式

echo 1 > /proc/sys/kernel/perf_event_paranoid

echo 0 > /proc/sys/kernel/kptr_restrict

• 添加容器的cap
  参考如下,但是不安去（不建议使用，除非特殊情况）

version: "3"

services: 

    perf:

      build: ./

      privileged: true

      pid: host

      cap_add: 

      - SYS_ADMIN

      volumes: 

      - "/tmp:/tmp"

    tomcat:

      image: tomcat

      ports:

      - "8080:8080"

      cap_add: 

      - ALL

      volumes: 

      - "/tmp:/tmp"

      - "./build:/opt/java-perf-tools/build"

• 官方提供几个可能的原因

- /proc/sys/kernel/perf_event_paranoid is set to restricted mode (>=2).

- seccomp disables perf_event_open API in a container.

- OS runs under a hypervisor that does not virtualize performance counters.

- perf_event_open API is not supported on this system, e.g. WSL

参考资料

https://github.com/jvm-profiling-tools/async-profiler#troubleshooting