From: Minchan Kim <minchan@kernel.org>
To: Hyunhee Kim <hyunhee.kim@samsung.com>
Cc: Michal Hocko <mhocko@suse.cz>, Anton Vorontsov <anton@enomsg.org>,
linux-mm@kvack.org, akpm@linux-foundation.org, rob@landley.net,
kamezawa.hiroyu@jp.fujitsu.com, hannes@cmpxchg.org,
rientjes@google.com, kirill@shutemov.name,
Kyungmin Park <kyungmin.park@samsung.com>
Subject: Re: [PATCH v6] memcg: event control at vmpressure.
Date: Wed, 26 Jun 2013 16:34:00 +0900 [thread overview]
Message-ID: <20130626073400.GC29127@bbox> (raw)
In-Reply-To: <CAOK=xRNEMp3igfwQfrz0ffApmoAL19OM0EGLaBJ5RerZy9ddtw@mail.gmail.com>
On Sat, Jun 22, 2013 at 01:51:17PM +0900, Hyunhee Kim wrote:
> And one more thing.
>
> vmpressure sends all of the lower events than the level (current).
>
> 155 list_for_each_entry(ev, &vmpr->events, node) {
> 156 if (level >= ev->level) {
> 157 eventfd_signal(ev->efd, 1);
> 158 signalled = true;
> 159 }
> 160 }
>
> Isn't it wasteful?
> When we registered "low" and "critical", and the current level is
> critical, why should we signal "low" level together?
> If we receive "critical" only, can't we just assume "low" level at the
> user space?
Agree.
--
Kind regards,
Minchan Kim
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next prev parent reply other threads:[~2013-06-26 7:33 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-17 11:30 [PATCH v3] memcg: event control at vmpressure Hyunhee Kim
2013-06-17 13:15 ` Michal Hocko
2013-06-18 6:10 ` Hyunhee Kim
2013-06-18 8:00 ` Hyunhee Kim
2013-06-18 11:01 ` Michal Hocko
2013-06-19 11:25 ` Hyunhee Kim
2013-06-19 11:59 ` Michal Hocko
2013-06-19 11:31 ` [PATCH v4] " Hyunhee Kim
2013-06-19 12:53 ` Michal Hocko
2013-06-20 2:13 ` Hyunhee Kim
2013-06-20 2:17 ` [PATCH v5] " Hyunhee Kim
2013-06-20 12:16 ` Michal Hocko
2013-06-21 0:21 ` [PATCH v6] " Hyunhee Kim
2013-06-21 0:24 ` Hyunhee Kim
2013-06-21 1:22 ` Minchan Kim
2013-06-21 9:19 ` Michal Hocko
2013-06-21 11:02 ` Hyunhee Kim
2013-06-21 11:54 ` Hyunhee Kim
2013-06-21 12:40 ` [PATCH v7] " Hyunhee Kim
2013-06-21 16:27 ` [PATCH v6] " Minchan Kim
2013-06-21 16:44 ` Minchan Kim
2013-06-22 0:27 ` Anton Vorontsov
2013-06-22 1:28 ` Hyunhee Kim
2013-06-26 7:47 ` Minchan Kim
2013-06-21 22:35 ` Anton Vorontsov
2013-06-22 4:36 ` Hyunhee Kim
2013-06-22 4:51 ` Hyunhee Kim
2013-06-22 5:50 ` [PATCH] memcg: consider "scanned < reclaimed" case when calculating Hyunhee Kim
2013-06-22 7:34 ` [PATCH] memcg: add interface to specify thresholds of vmpressure Hyunhee Kim
2013-06-25 20:46 ` Michal Hocko
2013-06-26 7:39 ` Minchan Kim
2013-06-26 7:50 ` Kyungmin Park
2013-06-26 8:03 ` Minchan Kim
2013-06-26 7:35 ` [PATCH] memcg: consider "scanned < reclaimed" case when calculating Minchan Kim
2013-06-27 6:12 ` [PATCH v2] vmpressure: consider "scanned < reclaimed" case when calculating a pressure level Hyunhee Kim
2013-06-27 9:37 ` Michal Hocko
2013-06-27 15:35 ` Minchan Kim
2013-06-27 16:11 ` Michal Hocko
2013-06-27 18:05 ` Anton Vorontsov
2013-06-28 12:17 ` Michal Hocko
2013-06-27 23:54 ` Minchan Kim
2013-06-28 7:43 ` [PATCH v3] " Hyunhee Kim
2013-06-28 12:26 ` Michal Hocko
2013-06-28 12:24 ` [PATCH v2] " Michal Hocko
2013-06-28 13:55 ` Minchan Kim
2013-06-28 15:17 ` Michal Hocko
2013-06-27 18:33 ` Anton Vorontsov
2013-06-26 7:34 ` Minchan Kim [this message]
2013-06-26 7:31 ` [PATCH v6] memcg: event control at vmpressure Minchan Kim
2013-06-25 16:07 ` Michal Hocko
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