Re: 2.5.36-mm1 dbench 512 profiles

William Lee Irwin III (wli@holomorphy.com)
Thu, 19 Sep 2002 23:59:47 -0700


On Thu, Sep 19, 2002 at 04:38:14PM -0700, Andrew Morton wrote:
> It would be interesting to know the context switch rate
> during this test, and to see what things look like with HZ=100.

There is no obvious time when the machine appears idle, but regardless:
HZ == 100 with idle=poll. The numbers are still down, and I'm not 100%
sure why, so I'm backing out HZ = 100 and trying something else.

c01053dc 296114302 79.5237 poll_idle
c01053a4 20974286 5.6328 default_idle
c015c586 11098020 2.98046 .text.lock.dcache
c0154b43 10046044 2.69794 .text.lock.namei
c01317e4 9712304 2.60831 generic_file_write_nolock
c0130d00 3133118 0.841423 file_read_actor
c0114a98 2300611 0.617847 load_balance
c013f7fc 1615733 0.433917 blk_queue_bounce
c019f6bb 1591350 0.427369 .text.lock.dec_and_lock
c01066a8 1554624 0.417506 .text.lock.semaphore
c019f640 1000989 0.268823 atomic_dec_and_lock
c0114f10 851084 0.228565 scheduler_tick
c0152378 639577 0.171763 path_lookup
c0144dc0 456594 0.122622 generic_file_llseek
c0114628 407284 0.109379 try_to_wake_up
c0115258 399893 0.107394 do_schedule
c015adf0 370906 0.0996096 prune_dcache
c011748d 366470 0.0984183 .text.lock.sched
c015b6d4 306140 0.0822162 d_instantiate
c013faa4 292987 0.0786839 .text.lock.highmem
c013676c 291664 0.0783286 .text.lock.slab
c01062dc 282983 0.0759972 __down
c014675c 281106 0.0754932 __fput
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