From: Kirk True <ktrue@movaris.com>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: kernelnewbies <kernelnewbies@nl.linux.org>, Linux-MM@kvack.org
Subject: Re: LTP VM test slower under 2.6.3 than 2.4.20
Date: Fri, 20 Feb 2004 10:57:11 -0800 [thread overview]
Message-ID: <40365887.6020204@movaris.com> (raw)
In-Reply-To: <3800000.1077295177@[10.10.2.4]>
Hi all,
> A kernel profile might help.
Here's the profiles comparing the two versions. I don't understand why
no "do_page_fault" shows up under 2.4.20 or why "gunzip" does.
Kirk
-------------------------------------------------
2.6.3:
# readprofile -r;./mem01;readprofile -m /boot/System.map-2.6.3 \
>> captured_profile2.6.3
1446 poll_idle 24.9310
4 delay_tsc 0.1667
71 do_page_fault 0.0536
41 schedule 0.0238
13 __might_sleep 0.0637
1 prepare_to_wait 0.0068
1 put_files_struct 0.0042
3229 do_softirq 16.3081
1 run_timer_softirq 0.0022
4807 total 0.0262
2.4.20:
# readprofile -r;./mem01;readprofile -m /boot/System.map-2.4.20 \
>> captured_profile2.4.20
347 gunzip 0.1559
8 acpi_restore_state_mem 0.0021
2 proc_dostring 0.0033
3 access_process_vm 0.0054
2 __mod_timer 0.0038
1 del_timer 0.0065
1 update_one_process 0.0036
1 notifier_chain_unregister 0.0052
365 total 0.0020
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next prev parent reply other threads:[~2004-02-20 18:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-20 16:36 Kirk True
2004-02-20 16:39 ` Martin J. Bligh
2004-02-20 18:57 ` Kirk True [this message]
2004-02-20 19:03 ` Kirk True
[not found] ` <40363DEE.9040608@movaris.com>
[not found] ` <5760000.1077296989@[10.10.2.4]>
2004-02-22 15:32 ` Kirk True
2004-02-20 22:45 ` Nick Piggin
2004-02-21 2:50 ` Kirk True
2004-02-21 2:50 ` Kirk True
2004-02-21 15:39 ` Kirk True
2004-02-23 7:19 ` Andrew Morton
2004-02-23 16:51 ` Kirk True
2004-02-23 19:42 ` Andrew Morton
2004-02-24 15:08 ` Kirk True
2004-02-24 23:38 ` Andrew Morton
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