lkml.org 
[lkml]   [2004]   [Oct]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [patch] voluntary-preempt-2.6.9-rc2-mm4-S7
    From
    Date
    On Sun, 2004-10-03 at 02:37, Lee Revell wrote:
    > On Mon, 2004-09-27 at 20:05, Ingo Molnar wrote:
    > > i've released the -S7 VP patch:
    > >
    > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm4-S7
    > >
    >
    > This one was caused by amlat:

    And here's another produced by "lsof /foo":

    preemption latency trace v1.0.7 on 2.6.9-rc2-mm4-VP-S7
    -------------------------------------------------------
    latency: 399 us, entries: 608 (608) | [VP:1 KP:1 SP:1 HP:1 #CPUS:1]
    -----------------
    | task: lsof/4347, uid:0 nice:0 policy:0 rt_prio:0
    -----------------
    => started at: unix_seq_start+0x10/0x50
    => ended at: rtc_interrupt+0x294/0x450
    =======>
    00000001 0.000ms (+0.000ms): unix_seq_start (seq_read)
    00000001 0.000ms (+0.039ms): unix_seq_idx (unix_seq_start)
    00000001 0.040ms (+0.000ms): unix_seq_show (seq_read)
    00000002 0.040ms (+0.001ms): sock_i_ino (unix_seq_show)
    00000002 0.041ms (+0.000ms): seq_printf (unix_seq_show)
    00000002 0.042ms (+0.002ms): vsnprintf (seq_printf)
    00000002 0.045ms (+0.003ms): number (vsnprintf)
    00000002 0.048ms (+0.000ms): skip_atoi (vsnprintf)
    00000002 0.049ms (+0.001ms): number (vsnprintf)
    00000002 0.050ms (+0.000ms): skip_atoi (vsnprintf)
    00000002 0.051ms (+0.000ms): number (vsnprintf)
    00000002 0.052ms (+0.000ms): skip_atoi (vsnprintf)
    00000002 0.052ms (+0.000ms): number (vsnprintf)
    00000002 0.053ms (+0.000ms): skip_atoi (vsnprintf)
    00000002 0.053ms (+0.000ms): number (vsnprintf)
    00000002 0.054ms (+0.000ms): skip_atoi (vsnprintf)
    00000002 0.055ms (+0.000ms): number (vsnprintf)
    00000002 0.056ms (+0.000ms): skip_atoi (vsnprintf)
    00000002 0.056ms (+0.001ms): number (vsnprintf)
    00000002 0.058ms (+0.000ms): seq_putc (unix_seq_show)
    00000002 0.059ms (+0.000ms): seq_putc (unix_seq_show)
    00000002 0.059ms (+0.000ms): seq_putc (unix_seq_show)
    00000002 0.059ms (+0.000ms): seq_putc (unix_seq_show)
    00000002 0.060ms (+0.000ms): seq_putc (unix_seq_show)
    00000002 0.060ms (+0.000ms): seq_putc (unix_seq_show)

    ...

    Full trace:

    http://krustophenia.net/testresults.php?dataset=2.6.9-rc2-mm4-S7#/var/www/2.6.9-rc2-mm4-S7/lsof-latency-trace.txt

    Lee



    -
    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/

    \
     
     \ /
      Last update: 2005-03-22 14:06    [W:0.020 / U:1.208 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site