Messages in this thread | | | Subject | Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 | From | Lee Revell <> | Date | Tue, 31 Aug 2004 22:30:30 -0400 |
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On Mon, 2004-08-30 at 05:06, Ingo Molnar wrote: > i've uploaded -Q5 to: > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk4-Q5
Hmm, 385 usec latency triggered by 'lsof /smb' (this is a samba export):
preemption latency trace v1.0.2 ------------------------------- latency: 385 us, entries: 626 (626) ----------------- | task: lsof/17876, uid:0 nice:0 policy:0 rt_prio:0 ----------------- => started at: unix_seq_start+0x10/0x50 => ended at: unix_seq_stop+0xf/0x30 =======> 00000001 0.000ms (+0.000ms): unix_seq_start (seq_read) 00000001 0.000ms (+0.000ms): unix_seq_idx (unix_seq_start) 00000001 0.027ms (+0.027ms): unix_seq_show (seq_read) 00000002 0.028ms (+0.000ms): sock_i_ino (unix_seq_show) 00000002 0.029ms (+0.001ms): seq_printf (unix_seq_show) 00000002 0.030ms (+0.000ms): vsnprintf (seq_printf) 00000002 0.032ms (+0.002ms): number (vsnprintf) 00000002 0.036ms (+0.004ms): skip_atoi (vsnprintf) 00000002 0.037ms (+0.000ms): number (vsnprintf) 00000002 0.038ms (+0.001ms): skip_atoi (vsnprintf) 00000002 0.039ms (+0.000ms): number (vsnprintf) 00000002 0.039ms (+0.000ms): skip_atoi (vsnprintf) 00000002 0.040ms (+0.000ms): number (vsnprintf) 00000002 0.041ms (+0.000ms): skip_atoi (vsnprintf) 00000002 0.041ms (+0.000ms): number (vsnprintf) 00000002 0.042ms (+0.000ms): skip_atoi (vsnprintf) 00000002 0.043ms (+0.000ms): number (vsnprintf) 00000002 0.043ms (+0.000ms): skip_atoi (vsnprintf) 00000002 0.044ms (+0.000ms): number (vsnprintf) 00000002 0.046ms (+0.001ms): seq_putc (unix_seq_show) 00000002 0.047ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.047ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.047ms (+0.000ms): seq_putc (unix_seq_show)
...
00000002 0.374ms (+0.000ms): number (vsnprintf) 00000002 0.375ms (+0.000ms): skip_atoi (vsnprintf) 00000002 0.376ms (+0.000ms): number (vsnprintf) 00000002 0.377ms (+0.001ms): seq_putc (unix_seq_show) 00000002 0.377ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.378ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.378ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.378ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.379ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.379ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.380ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.380ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.380ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.381ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.381ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.381ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.382ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.382ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.382ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.383ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.383ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.383ms (+0.000ms): seq_putc (unix_seq_show) 00000002 0.384ms (+0.000ms): seq_putc (unix_seq_show) 00000001 0.384ms (+0.000ms): preempt_schedule (unix_seq_show) 00000001 0.384ms (+0.000ms): seq_putc (unix_seq_show) 00000001 0.385ms (+0.000ms): unix_seq_stop (seq_read) 00000001 0.386ms (+0.000ms): sub_preempt_count (unix_seq_stop) 00000001 0.386ms (+0.000ms): _mmx_memcpy (check_preempt_timing) 00000001 0.387ms (+0.000ms): kernel_fpu_begin (_mmx_memcpy)
Full trace:
http://krustophenia.net/testresults.php?dataset=2.6.9-rc1-Q5#/var/www/2.6.9-rc1-Q5/trace9.txt
Lee
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