Re: 2.5.38-mm3

Dipankar Sarma
2002-09-27T08:27:43Z

On Thu, Sep 26, 2002 at 06:39:19AM -0700, William Lee Irwin III wrote:
> Interesting, can you narrow down the poll overheads any? No immediate
> needs (read as: leave your box up, but watch for it when you can),
> but I'd be interested in knowing if it's fd chunk or poll table setup
> overhead.

Hmm.. I don't see this by just leaving the box up (and a fiew interactive
commands) (4CPU P3 2.5.38-vanilla) -

8744695 default_idle 136635.8594
4371 __rdtsc_delay 136.5938
22793 do_softirq 118.7135
1734 serial_in 21.6750
261 .text.lock.serio 13.7368
8777715 total 6.2461
422 tasklet_hi_action 2.0288
106 bh_action 1.3250
46 system_call 1.0455
56 __generic_copy_to_user 0.8750
575 timer_bh 0.8168
70 __cpu_up 0.7292
57 cpu_idle 0.5089
24 __const_udelay 0.3750
35 mdio_read 0.3646
120 probe_irq_on 0.3571
134 page_remove_rmap 0.3102
108 page_add_rmap 0.3068
18 find_get_page 0.2812
189 do_wp_page 0.2513
7 fput 0.2188
27 pte_alloc_one 0.1875
135 __free_pages_ok 0.1834
2 syscall_call 0.1818
11 pgd_alloc 0.1719
11 __free_pages 0.1719
65 i8042_interrupt 0.1693
8 __wake_up 0.1667
16 find_vma 0.1667
15 serial_out 0.1562
15 radix_tree_lookup 0.1339
17 kmem_cache_free 0.1328
17 get_page_state 0.1328
62 zap_pte_range 0.1292
6 mdio_sync 0.1250
3 ret_from_intr 0.1250
2 cap_inode_permission_lite 0.1250
2 cap_file_permission 0.1250
49 do_anonymous_page 0.1178
9 lru_cache_add 0.1125
9 fget 0.1125

What application were you all running ?

Thanks
--
Dipankar Sarma <dipankar@in.ibm.com> http://lse.sourceforge.net
Linux Technology Center, IBM Software Lab, Bangalore, India.