From: Minchan Kim <minchan@kernel.org>
To: Pekka Enberg <penberg@kernel.org>
Cc: Anton Vorontsov <cbouatmailru@gmail.com>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Leonid Moiseichuk <leonid.moiseichuk@nokia.com>,
John Stultz <john.stultz@linaro.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linaro-kernel@lists.linaro.org, patches@linaro.org,
kernel-team@android.com
Subject: Re: [PATCH 0/5] Some vmevent fixes...
Date: Tue, 05 Jun 2012 17:00:14 +0900 [thread overview]
Message-ID: <4FCDBC8E.1000705@kernel.org> (raw)
In-Reply-To: <CAOJsxLHkzubReaR0utB4xdage0Omb4r=jhXCLwXQ8XOSct4LGg@mail.gmail.com>
Hi Peakk,
On 06/05/2012 04:53 PM, Pekka Enberg wrote:
> On Mon, Jun 4, 2012 at 4:35 PM, Anton Vorontsov <cbouatmailru@gmail.com> wrote:
>>> I don't mean VMEVENT_ATTR_LOWMEM_PAGES but following as,
>>>
>>> VMEVENT_ATTR_NR_FREE_PAGES
>>> VMEVENT_ATTR_NR_SWAP_PAGES
>>> VMEVENT_ATTR_NR_AVAIL_PAGES
>>>
>>> I'm not sure how it is useful.
>>
>> Yep, these raw values are mostly useless, and personally I don't use
>> these plain attributes. I use heuristics, i.e. "blended" attributes.
>> If we can come up with levels-based approach w/o using vmstat, well..
>> OK then.
>
> That's what Nokia's lowmem notifier uses. We can probably drop them
> once we have something else they could use.
Next concern is that periodic timer of implementation.
I think it would add direct hook in vmscan.c rather than peeking raw vmstat periodically by timer
so we can control more fine-grained way without unnecessary overhead.
--
Kind regards,
Minchan Kim
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WARNING: multiple messages have this Message-ID (diff)
From: Minchan Kim <minchan@kernel.org>
To: Pekka Enberg <penberg@kernel.org>
Cc: Anton Vorontsov <cbouatmailru@gmail.com>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Leonid Moiseichuk <leonid.moiseichuk@nokia.com>,
John Stultz <john.stultz@linaro.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linaro-kernel@lists.linaro.org, patches@linaro.org,
kernel-team@android.com
Subject: Re: [PATCH 0/5] Some vmevent fixes...
Date: Tue, 05 Jun 2012 17:00:14 +0900 [thread overview]
Message-ID: <4FCDBC8E.1000705@kernel.org> (raw)
In-Reply-To: <CAOJsxLHkzubReaR0utB4xdage0Omb4r=jhXCLwXQ8XOSct4LGg@mail.gmail.com>
Hi Peakk,
On 06/05/2012 04:53 PM, Pekka Enberg wrote:
> On Mon, Jun 4, 2012 at 4:35 PM, Anton Vorontsov <cbouatmailru@gmail.com> wrote:
>>> I don't mean VMEVENT_ATTR_LOWMEM_PAGES but following as,
>>>
>>> VMEVENT_ATTR_NR_FREE_PAGES
>>> VMEVENT_ATTR_NR_SWAP_PAGES
>>> VMEVENT_ATTR_NR_AVAIL_PAGES
>>>
>>> I'm not sure how it is useful.
>>
>> Yep, these raw values are mostly useless, and personally I don't use
>> these plain attributes. I use heuristics, i.e. "blended" attributes.
>> If we can come up with levels-based approach w/o using vmstat, well..
>> OK then.
>
> That's what Nokia's lowmem notifier uses. We can probably drop them
> once we have something else they could use.
Next concern is that periodic timer of implementation.
I think it would add direct hook in vmscan.c rather than peeking raw vmstat periodically by timer
so we can control more fine-grained way without unnecessary overhead.
--
Kind regards,
Minchan Kim
next prev parent reply other threads:[~2012-06-05 7:59 UTC|newest]
Thread overview: 188+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-01 13:24 [PATCH 0/3] vmevent: Implement 'low memory' attribute Anton Vorontsov
2012-05-01 13:24 ` Anton Vorontsov
2012-05-01 13:25 ` [PATCH 1/3] vmevent: Implement equal-to attribute state Anton Vorontsov
2012-05-01 13:25 ` Anton Vorontsov
2012-05-01 13:25 ` [PATCH 2/3] vmevent: Pass attr argument to sampling functions Anton Vorontsov
2012-05-01 13:25 ` Anton Vorontsov
2012-05-01 13:26 ` [PATCH 3/3] vmevent: Implement special low-memory attribute Anton Vorontsov
2012-05-01 13:26 ` Anton Vorontsov
2012-05-03 10:33 ` Pekka Enberg
2012-05-03 10:33 ` Pekka Enberg
2012-05-04 4:26 ` Minchan Kim
2012-05-04 4:26 ` Minchan Kim
2012-05-04 7:38 ` Anton Vorontsov
2012-05-04 7:38 ` Anton Vorontsov
2012-05-07 7:14 ` Pekka Enberg
2012-05-07 7:14 ` Pekka Enberg
2012-05-07 8:26 ` KOSAKI Motohiro
2012-05-07 8:26 ` KOSAKI Motohiro
2012-05-07 12:15 ` Anton Vorontsov
2012-05-07 12:15 ` Anton Vorontsov
2012-05-07 19:19 ` KOSAKI Motohiro
2012-05-07 19:19 ` KOSAKI Motohiro
2012-05-08 0:31 ` Anton Vorontsov
2012-05-08 0:31 ` Anton Vorontsov
2012-05-08 5:20 ` Pekka Enberg
2012-05-08 5:20 ` Pekka Enberg
2012-05-08 5:42 ` KOSAKI Motohiro
2012-05-08 5:42 ` KOSAKI Motohiro
2012-05-08 5:53 ` Pekka Enberg
2012-05-08 5:53 ` Pekka Enberg
2012-05-08 7:11 ` KOSAKI Motohiro
2012-05-08 7:11 ` KOSAKI Motohiro
2012-05-08 7:36 ` Pekka Enberg
2012-05-08 7:36 ` Pekka Enberg
2012-05-08 7:50 ` KOSAKI Motohiro
2012-05-08 7:50 ` KOSAKI Motohiro
2012-05-08 8:03 ` Pekka Enberg
2012-05-08 8:03 ` Pekka Enberg
2012-05-08 9:15 ` leonid.moiseichuk
2012-05-08 9:15 ` leonid.moiseichuk
2012-05-08 9:19 ` Pekka Enberg
2012-05-08 9:19 ` Pekka Enberg
2012-05-08 10:38 ` leonid.moiseichuk
2012-05-08 10:38 ` leonid.moiseichuk
2012-06-01 12:21 ` [PATCH 0/5] Some vmevent fixes Anton Vorontsov
2012-06-01 12:21 ` Anton Vorontsov
2012-06-01 12:24 ` [PATCH 1/5] vmstat: Implement refresh_vm_stats() Anton Vorontsov
2012-06-01 12:24 ` Anton Vorontsov
2012-06-05 14:30 ` Christoph Lameter
2012-06-05 14:30 ` Christoph Lameter
2012-06-08 3:17 ` KOSAKI Motohiro
2012-06-08 3:17 ` KOSAKI Motohiro
2012-06-01 12:24 ` [PATCH 2/5] vmevent: Convert from deferred timer to deferred work Anton Vorontsov
2012-06-01 12:24 ` Anton Vorontsov
2012-06-08 3:25 ` KOSAKI Motohiro
2012-06-08 3:25 ` KOSAKI Motohiro
2012-06-08 6:58 ` Anton Vorontsov
2012-06-08 6:58 ` Anton Vorontsov
2012-06-08 7:03 ` Pekka Enberg
2012-06-08 7:03 ` Pekka Enberg
2012-06-08 8:07 ` Anton Vorontsov
2012-06-08 8:07 ` Anton Vorontsov
2012-06-08 7:05 ` leonid.moiseichuk
2012-06-08 7:05 ` leonid.moiseichuk
2012-06-08 7:10 ` KOSAKI Motohiro
2012-06-08 7:10 ` KOSAKI Motohiro
2012-06-08 7:18 ` leonid.moiseichuk
2012-06-08 7:18 ` leonid.moiseichuk
2012-06-08 7:23 ` KOSAKI Motohiro
2012-06-08 7:23 ` KOSAKI Motohiro
2012-06-08 7:28 ` leonid.moiseichuk
2012-06-08 7:28 ` leonid.moiseichuk
2012-06-08 7:33 ` KOSAKI Motohiro
2012-06-08 7:33 ` KOSAKI Motohiro
2012-06-08 7:49 ` leonid.moiseichuk
2012-06-08 7:49 ` leonid.moiseichuk
2012-06-08 7:58 ` Anton Vorontsov
2012-06-08 7:58 ` Anton Vorontsov
2012-06-08 8:16 ` leonid.moiseichuk
2012-06-08 8:16 ` leonid.moiseichuk
2012-06-08 8:41 ` Anton Vorontsov
2012-06-08 8:41 ` Anton Vorontsov
2012-06-08 8:57 ` leonid.moiseichuk
2012-06-08 8:57 ` leonid.moiseichuk
2012-06-08 10:35 ` Anton Vorontsov
2012-06-08 10:35 ` Anton Vorontsov
2012-06-08 11:03 ` leonid.moiseichuk
2012-06-08 11:03 ` leonid.moiseichuk
2012-06-08 12:13 ` Anton Vorontsov
2012-06-08 12:13 ` Anton Vorontsov
2012-06-08 12:25 ` leonid.moiseichuk
2012-06-08 12:25 ` leonid.moiseichuk
2012-06-01 12:24 ` [PATCH 3/5] vmevent: Refresh vmstats before sampling Anton Vorontsov
2012-06-01 12:24 ` Anton Vorontsov
2012-06-05 14:36 ` Christoph Lameter
2012-06-05 14:36 ` Christoph Lameter
2012-06-01 12:24 ` [PATCH 4/5] vmevent: Hide meaningful names from the user-visible header Anton Vorontsov
2012-06-01 12:24 ` Anton Vorontsov
2012-06-01 12:24 ` [PATCH 5/5] vmevent: Rename one-shot mode to edge trigger mode Anton Vorontsov
2012-06-01 12:24 ` Anton Vorontsov
2012-06-03 18:26 ` [PATCH 0/5] Some vmevent fixes Pekka Enberg
2012-06-03 18:26 ` Pekka Enberg
2012-06-04 8:45 ` Minchan Kim
2012-06-04 8:45 ` Minchan Kim
2012-06-04 9:20 ` Pekka Enberg
2012-06-04 9:20 ` Pekka Enberg
2012-06-04 12:23 ` Minchan Kim
2012-06-04 12:23 ` Minchan Kim
2012-06-04 11:38 ` Anton Vorontsov
2012-06-04 11:38 ` Anton Vorontsov
2012-06-04 12:17 ` Minchan Kim
2012-06-04 12:17 ` Minchan Kim
2012-06-04 13:35 ` Anton Vorontsov
2012-06-04 13:35 ` Anton Vorontsov
2012-06-05 7:53 ` Pekka Enberg
2012-06-05 7:53 ` Pekka Enberg
2012-06-05 8:00 ` Minchan Kim [this message]
2012-06-05 8:00 ` Minchan Kim
2012-06-05 8:01 ` Pekka Enberg
2012-06-05 8:01 ` Pekka Enberg
2012-06-05 8:16 ` leonid.moiseichuk
2012-06-05 8:16 ` leonid.moiseichuk
2012-06-05 8:27 ` Minchan Kim
2012-06-05 8:27 ` Minchan Kim
2012-06-08 3:35 ` KOSAKI Motohiro
2012-06-08 3:35 ` KOSAKI Motohiro
2012-06-04 20:05 ` KOSAKI Motohiro
2012-06-04 20:05 ` KOSAKI Motohiro
2012-06-04 22:39 ` Anton Vorontsov
2012-06-04 22:39 ` Anton Vorontsov
2012-06-08 3:45 ` KOSAKI Motohiro
2012-06-08 3:45 ` KOSAKI Motohiro
2012-06-08 6:57 ` Pekka Enberg
2012-06-08 6:57 ` Pekka Enberg
2012-06-05 7:47 ` Pekka Enberg
2012-06-05 7:47 ` Pekka Enberg
2012-06-05 8:39 ` Anton Vorontsov
2012-06-05 8:39 ` Anton Vorontsov
2012-06-07 2:41 ` Minchan Kim
2012-06-07 2:41 ` Minchan Kim
2012-06-08 7:49 ` Anton Vorontsov
2012-06-08 7:49 ` Anton Vorontsov
2012-06-08 8:43 ` Minchan Kim
2012-06-08 8:43 ` Minchan Kim
2012-06-08 8:48 ` Pekka Enberg
2012-06-08 8:48 ` Pekka Enberg
2012-06-08 9:12 ` leonid.moiseichuk
2012-06-08 9:12 ` leonid.moiseichuk
2012-06-08 9:45 ` Anton Vorontsov
2012-06-08 9:45 ` Anton Vorontsov
2012-06-08 10:42 ` Minchan Kim
2012-06-08 10:42 ` Minchan Kim
2012-06-08 11:14 ` Anton Vorontsov
2012-06-08 11:14 ` Anton Vorontsov
2012-06-11 4:50 ` Minchan Kim
2012-06-11 4:50 ` Minchan Kim
2012-06-05 7:52 ` Pekka Enberg
2012-06-05 7:52 ` Pekka Enberg
2012-06-08 3:55 ` KOSAKI Motohiro
2012-06-08 3:55 ` KOSAKI Motohiro
2012-06-08 6:54 ` Pekka Enberg
2012-06-08 6:54 ` Pekka Enberg
2012-06-08 6:57 ` KOSAKI Motohiro
2012-06-08 6:57 ` KOSAKI Motohiro
2012-06-08 6:59 ` Pekka Enberg
2012-06-08 6:59 ` Pekka Enberg
2012-06-04 19:50 ` KOSAKI Motohiro
2012-06-04 19:50 ` KOSAKI Motohiro
2012-05-08 8:32 ` [PATCH 3/3] vmevent: Implement special low-memory attribute Minchan Kim
2012-05-08 8:32 ` Minchan Kim
2012-05-08 9:27 ` Pekka Enberg
2012-05-08 9:27 ` Pekka Enberg
2012-06-05 14:40 ` Christoph Lameter
2012-06-05 14:40 ` Christoph Lameter
2012-05-08 6:58 ` Anton Vorontsov
2012-05-08 6:58 ` Anton Vorontsov
2012-05-08 7:16 ` KOSAKI Motohiro
2012-05-08 7:16 ` KOSAKI Motohiro
2012-05-08 8:13 ` Anton Vorontsov
2012-05-08 8:13 ` Anton Vorontsov
2012-05-08 8:21 ` Anton Vorontsov
2012-05-08 8:21 ` Anton Vorontsov
2012-05-03 8:10 ` [PATCH 0/3] vmevent: Implement 'low memory' attribute Pekka Enberg
2012-05-03 8:10 ` Pekka Enberg
2012-05-03 9:44 ` Anton Vorontsov
2012-05-03 9:44 ` Anton Vorontsov
2012-05-03 10:54 ` Pekka Enberg
2012-05-03 10:54 ` Pekka Enberg
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