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From: | Alberto Garcia |
Subject: | Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW |
Date: | Wed, 24 May 2017 18:20:00 +0200 |
User-agent: | Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (i586-pc-linux-gnu) |
On Wed 24 May 2017 06:09:42 PM CEST, Anton Nefedov wrote: > I agree; as mentioned we have similar patches and they don't conflict > much. We noticed a performance regression on HDD though, for the > presumably optimized case (random 4k write over a large backed image); > so the patches were put on hold. Interesting, I think that scenario was noticeably faster in my tests. What cluster size(s) and image size(s) were you using? Berto
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