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From: | Christoph Hellwig |
Subject: | Re: [Qemu-devel] [PATCH v3 1/2] Add bdrv_aio_multiwrite |
Date: | Fri, 11 Sep 2009 00:44:01 +0200 |
User-agent: | Mutt/1.3.28i |
One thing that concerns me here is that we keep adding more memory allocations to the I/O path. At least on fast SSDs even kernel memory allocations are a performance problem and they're much faster than userspace ones.
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