From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Weekes Subject: Re: OOM problems Date: Sat, 13 Nov 2010 01:43:37 -0800 Message-ID: <4CDE5DC9.3040303@nuclearfallout.net> References: <4CDE44E2.2060807@nuclearfallout.net> <4FA716B1526C7C4DB0375C6DADBC4EA38D80702C25@LONPMAILBOX01.citrite.net> <4CDE4C08.70309@nuclearfallout.net> <4FA716B1526C7C4DB0375C6DADBC4EA38D80702C2E@LONPMAILBOX01.citrite.net> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0152996411==" Return-path: In-Reply-To: <4FA716B1526C7C4DB0375C6DADBC4EA38D80702C2E@LONPMAILBOX01.citrite.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============0152996411== Content-Type: multipart/alternative; boundary="------------000303010900030808060506" This is a multi-part message in MIME format. --------------000303010900030808060506 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 11/13/2010 1:13 AM, Ian Pratt wrote: >> > What do the guests use for storage? (e.g. "blktap2 for VHD files on >> an iscsi mounted ext3 volume") >> >> Simple sparse .img files on a local ext4 RAID volume, using "file:". > Ah, if you're using loop it may be that you're just filling memory > with dirty pages. Older kernels certainly did this, not sure about > newer ones. > > I'd be inclined to use blktap2 in raw file mode, with "aio:". > > Ian That makes sense. tap/tap2 didn't work for me in prior releases, so I had to stick to file. It seems to work now (well, tap2:tapdisk:aio does; tap:tapdisk:aio still doesn't), so I'll switch everything over to it, and cross my fingers. -John --------------000303010900030808060506 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit
On 11/13/2010 1:13 AM, Ian Pratt wrote:
  >  What do the guests use for storage? (e.g. "blktap2 for VHD files on
an iscsi mounted ext3 volume")

Simple sparse .img files on a local ext4 RAID volume, using "file:".
Ah, if you're using loop it may be that you're just filling memory with dirty pages. Older kernels certainly did this, not sure about newer ones.

I'd be inclined to use blktap2 in raw file mode, with "aio:".

Ian

That makes sense. tap/tap2 didn't work for me in prior releases, so I had to stick to file. It seems to work now (well, tap2:tapdisk:aio does; tap:tapdisk:aio still doesn't), so I'll switch everything over to it, and cross my fingers.

-John
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