From: William Lee Irwin III <wli@holomorphy.com>
To: Dipankar Sarma <dipankar@in.ibm.com>
Cc: Andrew Morton <akpm@digeo.com>,
lkml <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: 2.5.38-mm3
Date: Thu, 26 Sep 2002 05:42:44 -0700 [thread overview]
Message-ID: <20020926124244.GO3530@holomorphy.com> (raw)
In-Reply-To: <20020926181052.C18906@in.ibm.com>
On Thu, Sep 26, 2002 at 05:29:09AM -0700, William Lee Irwin III wrote:
>> Is there an update to the files_struct stuff too? I'm seeing large
>> overheads there also.
On Thu, Sep 26, 2002 at 06:10:52PM +0530, Dipankar Sarma wrote:
> files_struct_rcu is not in mm kernels, but I will upload the most
> recent version to the same download directory in LSE.
> I would be interested in fget() profile count change with that patch.
In my experience fget() is large even on UP kernels. For instance, a UP
profile from a long-running interactive load UP box (my home machine):
228542527 total 169.5902
216163353 default_idle 4503403.1875
850707 number 781.8998
829885 handle_IRQ_event 8644.6354
687351 proc_getdata 1227.4125
454401 system_call 8114.3036
446452 csum_partial_copy_generic 1800.2097
330157 tcp_sendmsg 76.4252
300022 vsnprintf 284.1117
271134 __generic_copy_to_user 3389.1750
237151 fget 3705.4844
222390 proc_pid_stat 308.8750
210759 fput 878.1625
186408 tcp_ioctl 314.8784
179146 sys_ioctl 238.2261
177419 do_softirq 1232.0764
167881 kmem_cache_free 1165.8403
154854 skb_clone 387.1350
149377 d_lookup 444.5744
139131 kmem_cache_alloc 668.8990
138638 kfree 866.4875
132555 sys_write 637.2837
This is only aggravated by cacheline bouncing on SMP. The reductions
of system cpu time will doubtless be beneficial for all.
Thanks,
Bill
WARNING: multiple messages have this Message-ID (diff)
From: William Lee Irwin III <wli@holomorphy.com>
To: Dipankar Sarma <dipankar@in.ibm.com>
Cc: Andrew Morton <akpm@digeo.com>,
lkml <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: 2.5.38-mm3
Date: Thu, 26 Sep 2002 05:42:44 -0700 [thread overview]
Message-ID: <20020926124244.GO3530@holomorphy.com> (raw)
In-Reply-To: <20020926181052.C18906@in.ibm.com>
On Thu, Sep 26, 2002 at 05:29:09AM -0700, William Lee Irwin III wrote:
>> Is there an update to the files_struct stuff too? I'm seeing large
>> overheads there also.
On Thu, Sep 26, 2002 at 06:10:52PM +0530, Dipankar Sarma wrote:
> files_struct_rcu is not in mm kernels, but I will upload the most
> recent version to the same download directory in LSE.
> I would be interested in fget() profile count change with that patch.
In my experience fget() is large even on UP kernels. For instance, a UP
profile from a long-running interactive load UP box (my home machine):
228542527 total 169.5902
216163353 default_idle 4503403.1875
850707 number 781.8998
829885 handle_IRQ_event 8644.6354
687351 proc_getdata 1227.4125
454401 system_call 8114.3036
446452 csum_partial_copy_generic 1800.2097
330157 tcp_sendmsg 76.4252
300022 vsnprintf 284.1117
271134 __generic_copy_to_user 3389.1750
237151 fget 3705.4844
222390 proc_pid_stat 308.8750
210759 fput 878.1625
186408 tcp_ioctl 314.8784
179146 sys_ioctl 238.2261
177419 do_softirq 1232.0764
167881 kmem_cache_free 1165.8403
154854 skb_clone 387.1350
149377 d_lookup 444.5744
139131 kmem_cache_alloc 668.8990
138638 kfree 866.4875
132555 sys_write 637.2837
This is only aggravated by cacheline bouncing on SMP. The reductions
of system cpu time will doubtless be beneficial for all.
Thanks,
Bill
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/
next prev parent reply other threads:[~2002-09-26 12:37 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-26 7:57 2.5.38-mm3 Andrew Morton
2002-09-26 7:57 ` 2.5.38-mm3 Andrew Morton
2002-09-26 12:24 ` 2.5.38-mm3 Dipankar Sarma
2002-09-26 12:24 ` 2.5.38-mm3 Dipankar Sarma
2002-09-26 12:29 ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 12:29 ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 12:40 ` 2.5.38-mm3 Dipankar Sarma
2002-09-26 12:40 ` 2.5.38-mm3 Dipankar Sarma
2002-09-26 12:42 ` William Lee Irwin III [this message]
2002-09-26 12:42 ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 13:05 ` 2.5.38-mm3 Dipankar Sarma
2002-09-26 13:05 ` 2.5.38-mm3 Dipankar Sarma
2002-09-26 13:17 ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 13:17 ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 13:29 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-26 13:29 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-26 13:39 ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 13:39 ` 2.5.38-mm3 William Lee Irwin III
2002-09-26 13:46 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-26 13:46 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-27 8:27 ` 2.5.38-mm3 Dipankar Sarma
2002-09-27 8:27 ` 2.5.38-mm3 Dipankar Sarma
2002-09-27 9:20 ` 2.5.38-mm3 William Lee Irwin III
2002-09-27 9:20 ` 2.5.38-mm3 William Lee Irwin III
2002-09-27 9:58 ` 2.5.38-mm3 Dipankar Sarma
2002-09-27 9:58 ` 2.5.38-mm3 Dipankar Sarma
2002-09-27 15:04 ` 2.5.38-mm3 Martin J. Bligh
2002-09-27 15:04 ` 2.5.38-mm3 Martin J. Bligh
2002-09-27 17:14 ` 2.5.38-mm3 Dipankar Sarma
2002-09-27 17:14 ` 2.5.38-mm3 Dipankar Sarma
2002-09-27 22:54 ` 2.5.38-mm3 William Lee Irwin III
2002-09-27 22:54 ` 2.5.38-mm3 William Lee Irwin III
2002-09-28 5:41 ` 2.5.38-mm3 Dipankar Sarma
2002-09-28 5:41 ` 2.5.38-mm3 Dipankar Sarma
2002-09-28 4:35 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-28 4:35 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-28 4:36 ` 2.5.38-mm3 William Lee Irwin III
2002-09-28 4:36 ` 2.5.38-mm3 William Lee Irwin III
2002-09-28 4:54 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-28 4:54 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-28 5:29 ` 2.5.38-mm3 Dipankar Sarma
2002-09-28 5:29 ` 2.5.38-mm3 Dipankar Sarma
2002-09-28 4:30 ` 2.5.38-mm3 Zwane Mwaikambo
2002-09-28 4:30 ` 2.5.38-mm3 Zwane Mwaikambo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20020926124244.GO3530@holomorphy.com \
--to=wli@holomorphy.com \
--cc=akpm@digeo.com \
--cc=dipankar@in.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.