[Xen-devel] tap:aio performance

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Subject:	[Xen-devel] tap:aio performance
From:	"James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date:	Wed, 31 Dec 2008 23:25:15 +1100
Delivery-date:	Wed, 31 Dec 2008 04:25:39 -0800
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Thread-topic:	tap:aio performance

Now that I have tap:aio working under GPLPV, I have found that the
performance is terrible (as in something is wrong). Under any sort of
load, the system becomes effectively frozen - block requests appear to
be taking seconds.

Currently I have up to 16 requests 'in the air' at a time... is that too
much for tap:aio? Is there something else I could be doing wrong?

It's got me baffled at the moment...

Thanks

James


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[Xen-devel] tap:aio performance