(3, SOL_RAW, ICMP_FILTER, ~(1<<ICMP_ECHOREPLY|1<<ICMP_DEST_UNREACH|1<<ICMP_SOURCE_QUENCH|1<<ICMP_REDIRECT|1<<ICMP_TIME_EXCEEDED|1<<ICMP_PARAMETERPROB), 4) = 0 setsockopt(3, SOL_IP, IP_RECVERR, [1], 4) = 0 setsockopt(3, SOL_SOCKET, SO_SNDBUF, [324], 4) = 0 ...
以秒了表示时间. -T 显示每一调用所耗的时间. -v 输出所有的系统调用.一些调用关于环境变量,状态,输...
strace 是Linux环境下的一款程序调试工具,用于检查一个应用程序所使用的系统调用以及它所接收的系统信息。strace会追踪程序运行时的整个生命周期,输出每一个系统调用的名字、参数、返回值和执行所消耗的时间等,是高级运维和开发人员排查问题的杀手铜。 strace命令的参数选项及说明 -c 统计每一个系统调用所执行的时间、...
write(1, "\"-//IETF//"..., 216) = 216 This shows it reading "test" + linefeed from standard in, and writing it back out to the network connection, then calling poll() to wait for a reply, reading the reply from the network connection and writing it to standard out. Everything ...
2. Strace 参考链接: https://www.kernel.org/doc/man-pages/ root@master:~/imagev1.20.7#stracels execve("/bin/ls", ["ls"], [/* 27 vars */])=0 brk(NULL)=0x13cf000 access("/etc/.nohwcap",F_OK)=-1ENOENT(Nosuchfileordirectory) ...
strace的最简单的用法就是执行一个指定的命令,如:$ strace cat /dev/null 在命令结束之后它也就退出了。在命令执行的过程中,strace会记录和解析命令进程的所有系统调用以及这个进程所接收到的所有的信号值。 对于网络慢的问题,可以使用tcpdump抓包分析慢的问题;而如果就是本机一个程序慢呢?就需要使用strace来分析...
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bpf_filter.h bpf_fprog.h bpf_seccomp_filter.c bpf_sock_filter.c btrfs.c cacheflush.c capability.c caps0.h caps1.h chdir.c chmod.c clone.c close_range.c copy_file_range.c count.c counter_ioctl.c defs.h delay.c delay.h desc.c dirent.c dirent64....
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poll([{fd=4, events=POLLIN}], 1, 5000) = 1 ([{fd=4, revents=POLLIN}]) ioctl(4, FIONREAD, [131]) = 0 recvfrom(4, "Q:\201\203\0\1\0\0\0\1\0\0\nauthserver\6mojang\3c"..., 1024, 0, {sa_family=AF_INET6, sin6_port=htons(53), inet_pton(AF_INET6, "2001:4860:...