From: Ray Bryant <raybry@sgi.com>
To: Nick Piggin <piggin@cyberone.com.au>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
William Lee Irwin III <wli@holomorphy.com>,
Marcelo Tosatti <marcelo.tosatti@cyclades.com>,
Con Kolivas <kernel@kolivas.org>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
riel@redhat.com
Subject: Re: swapping and the value of /proc/sys/vm/swappiness
Date: Thu, 30 Sep 2004 12:15:48 -0500 [thread overview]
Message-ID: <415C3F44.2080206@sgi.com> (raw)
In-Reply-To: <415A0378.9030007@cyberone.com.au>
Nick Piggin wrote:
>
>
> Nick Piggin wrote:
>
>>
>> Thanks Ray. From looking over your old results, it appears that
>> -kswapdfix
>> probably has the nicest swappiness ramp, which is probably to be
>> expected,
>> as the problem that is being fixed did exist in all other kernels you
>> tested,
>> but the later ones just had other aggrivating changes.
>>
>> The swappiness=60 weirdness might just be some obscure interaction
>> with the
>> workload. If that is the case, it is probably not too important,
>> however it
>> could be due to a possible oversight in my patch....
>>
>
> Here is a patch on top of the last one - if you can give it a test
> some time, that would be great.
>
> Thanks
> Nick
>
>
Hi Nick,
Here are the results for the kswapd2 patch, along with the previous version
and the original 2.6.9-rc1-mm3 test. It pretty much looks like a wash between
the kswapd and kswapd2 patches.
Kernel Version 2.6.9-rc1-mm3:
Total I/O Avg Swap min max pg cache min max
----------- --------- ------- ------ --------- ------- -------
0 274.80 MB/s 10511 MB ( 5644, 14492) 13293 MB ( 8596, 17156)
20 267.02 MB/s 12624 MB ( 5578, 16287) 15298 MB ( 8468, 18889)
40 267.66 MB/s 13541 MB ( 6619, 17461) 16199 MB ( 9393, 20044)
60 233.73 MB/s 18094 MB ( 16550, 19676) 20629 MB ( 19103, 22192)
80 213.64 MB/s 20950 MB ( 15844, 22977) 23450 MB ( 18496, 25440)
100 164.58 MB/s 26004 MB ( 26004, 26004) 28410 MB ( 28327, 28455)
Kernel Version 2.6.9-rc1-mm3-kdb-kswapdfix:
Total I/O Avg Swap min max pg cache min max
----------- --------- ------- ------ --------- ------- -------
0 279.97 MB/s 89 MB ( 12, 265) 3062 MB ( 2947, 3267)
20 283.55 MB/s 161 MB ( 15, 372) 3190 MB ( 3011, 3427)
40 282.32 MB/s 204 MB ( 6, 407) 3187 MB ( 2995, 3331)
60 279.42 MB/s 72 MB ( 15, 171) 3091 MB ( 3027, 3155)
80 283.34 MB/s 920 MB ( 144, 3028) 3904 MB ( 3106, 5957)
100 160.55 MB/s 26008 MB ( 26007, 26008) 28473 MB ( 28455, 28487)
Kernel Version 2.6.9-rc1-mm3-kdb-kswapdfix2:
Total I/O Avg Swap min max pg cache min max
----------- --------- ------- ------ --------- ------- -------
0 282.71 MB/s 247 MB ( 8, 691) 3248 MB ( 2995, 3636)
20 281.96 MB/s 127 MB ( 3, 300) 3097 MB ( 2931, 3283)
40 282.24 MB/s 252 MB ( 16, 417) 3270 MB ( 3059, 3475)
60 281.27 MB/s 404 MB ( 106, 1070) 3414 MB ( 3139, 4068)
80 281.30 MB/s 494 MB ( 204, 662) 3485 MB ( 3187, 3635)
100 160.35 MB/s 26003 MB ( 26003, 26003) 28477 MB ( 28407, 28519)
--
Best Regards,
Ray
-----------------------------------------------
Ray Bryant
512-453-9679 (work) 512-507-7807 (cell)
raybry@sgi.com raybry@austin.rr.com
The box said: "Requires Windows 98 or better",
so I installed Linux.
-----------------------------------------------
WARNING: multiple messages have this Message-ID (diff)
From: Ray Bryant <raybry@sgi.com>
To: Nick Piggin <piggin@cyberone.com.au>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
William Lee Irwin III <wli@holomorphy.com>,
Marcelo Tosatti <marcelo.tosatti@cyclades.com>,
Con Kolivas <kernel@kolivas.org>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
riel@redhat.com
Subject: Re: swapping and the value of /proc/sys/vm/swappiness
Date: Thu, 30 Sep 2004 12:15:48 -0500 [thread overview]
Message-ID: <415C3F44.2080206@sgi.com> (raw)
In-Reply-To: <415A0378.9030007@cyberone.com.au>
Nick Piggin wrote:
>
>
> Nick Piggin wrote:
>
>>
>> Thanks Ray. From looking over your old results, it appears that
>> -kswapdfix
>> probably has the nicest swappiness ramp, which is probably to be
>> expected,
>> as the problem that is being fixed did exist in all other kernels you
>> tested,
>> but the later ones just had other aggrivating changes.
>>
>> The swappiness=60 weirdness might just be some obscure interaction
>> with the
>> workload. If that is the case, it is probably not too important,
>> however it
>> could be due to a possible oversight in my patch....
>>
>
> Here is a patch on top of the last one - if you can give it a test
> some time, that would be great.
>
> Thanks
> Nick
>
>
Hi Nick,
Here are the results for the kswapd2 patch, along with the previous version
and the original 2.6.9-rc1-mm3 test. It pretty much looks like a wash between
the kswapd and kswapd2 patches.
Kernel Version 2.6.9-rc1-mm3:
Total I/O Avg Swap min max pg cache min max
----------- --------- ------- ------ --------- ------- -------
0 274.80 MB/s 10511 MB ( 5644, 14492) 13293 MB ( 8596, 17156)
20 267.02 MB/s 12624 MB ( 5578, 16287) 15298 MB ( 8468, 18889)
40 267.66 MB/s 13541 MB ( 6619, 17461) 16199 MB ( 9393, 20044)
60 233.73 MB/s 18094 MB ( 16550, 19676) 20629 MB ( 19103, 22192)
80 213.64 MB/s 20950 MB ( 15844, 22977) 23450 MB ( 18496, 25440)
100 164.58 MB/s 26004 MB ( 26004, 26004) 28410 MB ( 28327, 28455)
Kernel Version 2.6.9-rc1-mm3-kdb-kswapdfix:
Total I/O Avg Swap min max pg cache min max
----------- --------- ------- ------ --------- ------- -------
0 279.97 MB/s 89 MB ( 12, 265) 3062 MB ( 2947, 3267)
20 283.55 MB/s 161 MB ( 15, 372) 3190 MB ( 3011, 3427)
40 282.32 MB/s 204 MB ( 6, 407) 3187 MB ( 2995, 3331)
60 279.42 MB/s 72 MB ( 15, 171) 3091 MB ( 3027, 3155)
80 283.34 MB/s 920 MB ( 144, 3028) 3904 MB ( 3106, 5957)
100 160.55 MB/s 26008 MB ( 26007, 26008) 28473 MB ( 28455, 28487)
Kernel Version 2.6.9-rc1-mm3-kdb-kswapdfix2:
Total I/O Avg Swap min max pg cache min max
----------- --------- ------- ------ --------- ------- -------
0 282.71 MB/s 247 MB ( 8, 691) 3248 MB ( 2995, 3636)
20 281.96 MB/s 127 MB ( 3, 300) 3097 MB ( 2931, 3283)
40 282.24 MB/s 252 MB ( 16, 417) 3270 MB ( 3059, 3475)
60 281.27 MB/s 404 MB ( 106, 1070) 3414 MB ( 3139, 4068)
80 281.30 MB/s 494 MB ( 204, 662) 3485 MB ( 3187, 3635)
100 160.35 MB/s 26003 MB ( 26003, 26003) 28477 MB ( 28407, 28519)
--
Best Regards,
Ray
-----------------------------------------------
Ray Bryant
512-453-9679 (work) 512-507-7807 (cell)
raybry@sgi.com raybry@austin.rr.com
The box said: "Requires Windows 98 or better",
so I installed Linux.
-----------------------------------------------
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next prev parent reply other threads:[~2004-09-30 17:12 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-06 19:11 swapping and the value of /proc/sys/vm/swappiness Ray Bryant
2004-09-06 20:10 ` Andrew Morton
2004-09-06 20:10 ` Andrew Morton
2004-09-06 21:22 ` Ray Bryant
2004-09-06 21:22 ` Ray Bryant
2004-09-06 21:36 ` Andrew Morton
2004-09-06 21:36 ` Andrew Morton
2004-09-06 22:37 ` William Lee Irwin III
2004-09-06 22:37 ` William Lee Irwin III
2004-09-06 23:51 ` Nick Piggin
2004-09-06 23:51 ` Nick Piggin
2004-09-07 0:31 ` Ray Bryant
2004-09-07 0:31 ` Ray Bryant
2004-09-06 22:48 ` William Lee Irwin III
2004-09-06 22:48 ` William Lee Irwin III
2004-09-06 23:09 ` Con Kolivas
2004-09-06 23:09 ` Con Kolivas
2004-09-06 23:27 ` Andrew Morton
2004-09-06 23:27 ` Andrew Morton
2004-09-06 23:34 ` Con Kolivas
2004-09-06 23:34 ` Con Kolivas
2004-09-07 0:03 ` Marcelo Tosatti
2004-09-07 0:03 ` Marcelo Tosatti
2004-09-07 1:34 ` Con Kolivas
2004-09-07 1:34 ` Con Kolivas
2004-09-07 10:38 ` Nick Piggin
2004-09-07 10:38 ` Nick Piggin
2004-09-07 10:56 ` Con Kolivas
2004-09-08 16:45 ` Marcelo Tosatti
2004-09-08 16:45 ` Marcelo Tosatti
2004-09-09 1:12 ` Con Kolivas
2004-09-07 17:03 ` Ray Bryant
2004-09-07 17:03 ` Ray Bryant
2004-09-07 21:20 ` Marcelo Tosatti
2004-09-07 21:20 ` Marcelo Tosatti
2004-09-08 2:18 ` Marcelo Tosatti
2004-09-08 2:18 ` Marcelo Tosatti
2004-09-08 14:20 ` Ray Bryant
2004-09-08 16:54 ` Marcelo Tosatti
2004-09-08 16:54 ` Marcelo Tosatti
2004-09-08 19:35 ` Ray Bryant
2004-09-08 19:35 ` Ray Bryant
2004-09-08 19:30 ` Marcelo Tosatti
2004-09-08 19:30 ` Marcelo Tosatti
2004-09-09 3:06 ` Ray Bryant
2004-09-09 3:06 ` Ray Bryant
2004-09-09 2:14 ` Marcelo Tosatti
2004-09-09 2:14 ` Marcelo Tosatti
2004-09-09 14:21 ` Ray Bryant
2004-09-09 14:21 ` Ray Bryant
2004-09-09 3:09 ` William Lee Irwin III
2004-09-09 3:09 ` William Lee Irwin III
2004-09-09 14:16 ` Ray Bryant
2004-09-09 17:23 ` William Lee Irwin III
2004-09-09 17:23 ` William Lee Irwin III
2004-09-28 1:54 ` Ray Bryant
2004-09-28 3:36 ` Nick Piggin
2004-09-28 3:36 ` Nick Piggin
2004-09-29 0:36 ` Nick Piggin
2004-09-29 4:23 ` Ray Bryant
2004-09-29 4:23 ` Ray Bryant
2004-09-30 17:15 ` Ray Bryant [this message]
2004-09-30 17:15 ` Ray Bryant
2004-09-08 17:31 ` Martin J. Bligh
2004-09-08 17:31 ` Martin J. Bligh
2004-09-08 18:04 ` Rik van Riel
2004-09-08 18:04 ` Rik van Riel
2004-09-08 19:50 ` Diego Calleja
2004-09-08 19:50 ` Diego Calleja
2004-09-08 21:10 ` Martin J. Bligh
2004-09-08 21:10 ` Martin J. Bligh
2004-09-08 21:55 ` Diego Calleja
2004-09-08 21:55 ` Diego Calleja
2004-09-08 22:20 ` Martin J. Bligh
2004-09-08 22:20 ` Martin J. Bligh
2004-09-08 23:22 ` Rik van Riel
2004-09-08 23:22 ` Rik van Riel
2004-09-09 16:26 ` Bill Davidsen
2004-09-08 22:28 ` Alan Cox
2004-09-08 22:28 ` Alan Cox
2004-09-08 23:42 ` Martin J. Bligh
2004-09-08 23:42 ` Martin J. Bligh
2004-09-08 19:54 ` Ray Bryant
2004-09-08 19:54 ` Ray Bryant
2004-09-08 15:19 ` Ray Bryant
2004-09-08 15:19 ` Ray Bryant
2004-09-14 18:31 ` Florin Andrei
2004-09-14 20:15 ` Marcelo Tosatti
2004-09-14 22:53 ` Con Kolivas
2004-09-14 21:41 ` Marcelo Tosatti
2004-09-15 0:22 ` Con Kolivas
2004-09-16 18:50 ` Marcelo Tosatti
2004-09-17 0:22 ` Con Kolivas
2004-09-15 16:54 ` Florin Andrei
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