From: Dave Hansen <dave.hansen@intel.com>
To: "Huang, Ying" <ying.huang@intel.com>,
Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: linux-mm@kvack.org
Subject: Re: [RFC 11/11] mm, THP, swap: Delay splitting THP during swap out
Date: Wed, 10 Aug 2016 09:28:54 -0700 [thread overview]
Message-ID: <57AB5646.2000906@intel.com> (raw)
In-Reply-To: <87eg5w3cpa.fsf@yhuang-mobile.sh.intel.com>
On 08/10/2016 07:45 AM, Huang, Ying wrote:
> For vm event, I found for now there are only two vm event for swap:
> PSWPIN and PSWPOUT. There are counted when page and read from or write
> to the block device. So I think we have no existing vm event to count
> here.
I think the point still stands that we should ensure that we have proper
instrumentation to see when huge swap is being used and if/how pages are
being split during the process.
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next prev parent reply other threads:[~2016-08-10 16:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <01f101d1f2da$5e943aa0$1bbcafe0$@alibaba-inc.com>
[not found] ` <01f201d1f2dc$bd43f750$37cbe5f0$@alibaba-inc.com>
2016-08-10 8:01 ` Hillf Danton
2016-08-10 14:45 ` Huang, Ying
2016-08-10 16:28 ` Dave Hansen [this message]
2016-08-10 16:49 ` Huang, Ying
2016-08-09 16:37 [RFC 00/11] THP swap: Delay splitting THP during swapping out Huang, Ying
2016-08-09 16:37 ` [RFC 11/11] mm, THP, swap: Delay splitting THP during swap out Huang, Ying
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