Re: 2.6.1 slower than 2.4, smp/scsi/sw-raid/reiserfs

[Philip Martin]

Andrew Morton <akpm@xxxxxxxx> writes:

>> 2.6.1
>
> Odd.  Are you really sure that it was the correct System.map?

I think so. I always build kernels using Debian's kernel-package so
both vmlinuz and System.map get placed into a .deb package as
vmlinuz-2.6.1 and System.map-2.6.1.

$ ls -l /boot/Sys*
-rw-r--r--    1 root     root       492205 Dec  1 19:27 /boot/System.map-2.4.23
-rw-r--r--    1 root     root       492205 Jan  5 21:21 /boot/System.map-2.4.24
-rw-r--r--    1 root     root       715800 Feb  1 21:02 /boot/System.map-2.6.1

$ ls -l /boot/vm*
-rw-r--r--    1 root     root       880826 Dec  1 19:27 /boot/vmlinuz-2.4.23
-rw-r--r--    1 root     root       880822 Jan  5 21:21 /boot/vmlinuz-2.4.24
-rw-r--r--    1 root     root      1095040 Feb  1 21:02 /boot/vmlinuz-2.6.1

Hmm, I see that my 2.6.1 image is 25% bigger than 2.4.24, I'd not
noticed that before.

I have just tried another 2.6 profile run and got similar results.

248.88user 122.00system 3:41.18elapsed 167%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (453major+3770323minor)pagefaults 0swaps

c011e158 add_wait_queue                              442   5.5250
c010b1e0 error_code                                  444   7.9286
c0114658 sched_clock                                 460   3.8333
c0108ac8 copy_thread                                 473   0.8631
c01229e0 wait_task_zombie                            488   1.0252
c010a79c syscall_call                                489  44.4545
c0127a1c del_timer_sync                              529   4.0076
c0128d18 flush_signal_handlers                       592   8.7059
c010c570 handle_IRQ_event                            597   6.7841
c011fbe0 do_fork                                     606   1.5947
c0121970 put_files_struct                            616   3.2083
c0123ec0 do_softirq                                  617   3.0245
c011add4 wake_up_forked_process                      776   1.9020
c0110d1c old_mmap                                    868   2.6790
c012c638 sys_rt_sigaction                            942   3.8607
c0122d78 sys_wait4                                   958   1.6404
c01168b8 flush_tlb_mm                               1040   7.0270
c012b0a4 get_signal_to_deliver                      1385   1.4610
c0123e38 current_kernel_time                        1487  21.8676
c011afc8 schedule_tail                              1606   8.9222
c01223e8 do_exit                                    1807   1.8514
c011df4f .text.lock.sched                           2302   7.9654
c012b560 sys_rt_sigprocmask                         2417   7.0262
c012c0a0 do_sigaction                               2736   4.0473
c011e3c8 dup_task_struct                            3034  22.3088
c011ec08 copy_files                                 3103   3.5261
c011de6c __preempt_spin_lock                        3171  39.6375
c012b474 sigprocmask                                3387  14.3517
c011c2e0 __wake_up                                  3699  48.6711
c0121d58 exit_notify                                3780   2.2500
c0121150 release_task                               4071   7.4288
c011694c flush_tlb_page                             7069  44.1812
c011bbf0 schedule                                   7123   4.4519
c011e6d4 copy_mm                                    7826   7.5833
c010a770 system_call                                8249 187.4773
c011efe0 copy_process                               8760   2.8516
c0119588 pte_alloc_one                             16097 251.5156
c01199b8 do_page_fault                             44492  37.3255
c01086b0 default_idle                             937243 18023.9038
00000000 total                                    1095569   6.7218

-- 
Philip Martin
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