Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752096AbbBQUcU (ORCPT ); Tue, 17 Feb 2015 15:32:20 -0500 Received: from relay.parallels.com ([195.214.232.42]:38521 "EHLO relay.parallels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751459AbbBQUcS (ORCPT ); Tue, 17 Feb 2015 15:32:18 -0500 Date: Tue, 17 Feb 2015 23:32:02 +0300 From: Andrew Vagin To: David Ahern CC: Andrey Vagin , , , Oleg Nesterov , Andrew Morton , Cyrill Gorcunov , Pavel Emelyanov , Roger Luethi Subject: Re: [PATCH 0/7] [RFC] kernel: add a netlink interface to get information about processes Message-ID: <20150217203202.GA7091@paralelels.com> References: <1424161226-15176-1-git-send-email-avagin@openvz.org> <54E367CB.9030309@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="koi8-r" Content-Disposition: inline In-Reply-To: <54E367CB.9030309@gmail.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-Originating-IP: [10.24.25.16] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5645 Lines: 99 On Tue, Feb 17, 2015 at 09:09:47AM -0700, David Ahern wrote: > On 2/17/15 1:20 AM, Andrey Vagin wrote: > >And here are statistics about syscalls which were called by each > >command. > >$ perf stat -e syscalls:sys_exit* -- ps ax -o pid,ppid 2>&1 | grep syscalls | sort -n -r | head -n 5 > > 20,713 syscalls:sys_exit_open > > 20,710 syscalls:sys_exit_close > > 20,708 syscalls:sys_exit_read > > 10,348 syscalls:sys_exit_newstat > > 31 syscalls:sys_exit_write > > > >$ perf stat -e syscalls:sys_exit* -- ./task_diag_all 2>&1 | grep syscalls | sort -n -r | head -n 5 > > 114 syscalls:sys_exit_recvfrom > > 49 syscalls:sys_exit_write > > 8 syscalls:sys_exit_mmap > > 4 syscalls:sys_exit_mprotect > > 3 syscalls:sys_exit_newfstat > > 'perf trace -s' gives the summary with stats. > e.g., perf trace -s -- ps ax -o pid,ppid Thank you for this command, I haven't used it before. ps (21301), 145271 events, 100.0%, 0.000 msec syscall calls min avg max stddev (msec) (msec) (msec) (%) --------------- -------- --------- --------- --------- ------ read 20717 0.000 0.020 1.631 0.64% write 1 0.019 0.019 0.019 0.00% open 20722 0.025 0.035 3.624 0.93% close 20719 0.006 0.009 1.059 0.95% stat 10352 0.015 0.025 1.748 0.95% fstat 12 0.010 0.012 0.020 6.17% lseek 2 0.011 0.012 0.012 3.08% mmap 30 0.012 0.034 0.094 9.35% mprotect 17 0.034 0.045 0.067 4.86% munmap 3 0.028 0.058 0.108 44.12% brk 4 0.011 0.015 0.019 11.24% rt_sigaction 25 0.011 0.011 0.014 1.27% rt_sigprocmask 1 0.012 0.012 0.012 0.00% ioctl 4 0.010 0.012 0.014 6.94% access 1 0.034 0.034 0.034 0.00% execve 6 0.000 0.496 2.794 92.58% uname 1 0.015 0.015 0.015 0.00% getdents 12 0.019 0.691 1.158 13.04% getrlimit 1 0.012 0.012 0.012 0.00% geteuid 1 0.012 0.012 0.012 0.00% arch_prctl 1 0.013 0.013 0.013 0.00% futex 1 0.020 0.020 0.020 0.00% set_tid_address 1 0.012 0.012 0.012 0.00% openat 1 0.030 0.030 0.030 0.00% set_robust_list 1 0.011 0.011 0.011 0.00% task_diag_all (21304), 569 events, 98.6%, 0.000 msec syscall calls min avg max stddev (msec) (msec) (msec) (%) --------------- -------- --------- --------- --------- ------ read 2 0.000 0.045 0.090 100.00% write 77 0.010 0.013 0.083 7.93% open 2 0.031 0.038 0.045 19.64% close 3 0.010 0.014 0.017 13.43% fstat 3 0.011 0.011 0.012 3.79% mmap 8 0.013 0.027 0.049 16.72% mprotect 4 0.034 0.043 0.052 8.86% munmap 1 0.031 0.031 0.031 0.00% brk 1 0.014 0.014 0.014 0.00% ioctl 1 0.010 0.010 0.010 0.00% access 1 0.030 0.030 0.030 0.00% getpid 1 0.011 0.011 0.011 0.00% socket 1 0.045 0.045 0.045 0.00% sendto 2 0.091 0.104 0.117 12.63% recvfrom 175 0.026 0.093 0.141 1.10% bind 1 0.014 0.014 0.014 0.00% execve 1 0.000 0.000 0.000 0.00% arch_prctl 1 0.011 0.011 0.011 0.00% > > ps (23850), 3117 events, 99.3%, 0.000 msec > > syscall calls min avg max stddev > (msec) (msec) (msec) (%) > --------------- -------- --------- --------- --------- ------ > read 353 0.000 0.010 0.035 3.14% > write 166 0.006 0.012 0.045 3.03% > open 365 0.002 0.005 0.178 11.29% > close 354 0.001 0.002 0.024 3.57% > stat 170 0.002 0.007 0.662 52.99% > fstat 19 0.002 0.003 0.003 2.31% > lseek 2 0.003 0.003 0.003 6.49% > mmap 50 0.004 0.006 0.013 3.40% > ... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/