Messages in this thread | | | Date | Mon, 01 Aug 2011 12:37:39 +0300 | From | Avi Kivity <> | Subject | Re: [RFC PATCH]vhost-blk: In-kernel accelerator for virtio block device |
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On 08/01/2011 12:18 PM, Liu Yuan wrote: >> Agree. vhost-net works around the lack of async zero copy networking >> interface. Block I/O on the other hand does have such an interface, >> and in addition transaction rates are usually lower. All we're >> saving is the syscall overhead. >> > > Personally I too agree with Sasha Levin. But vhost-blk is the first > fast prototype that is supposed to act as a code base to do further > optimisation, which I plan to utilize kernel's internal stuff like > BIO layer, that can not be accessed from user space, to maximize the > performance for raw disk based block IO.
Is there anything in the bio layer which is not exposed by linux-aio? Or is linux-aio slow in translating from vfs ops to bio ops?
-- error compiling committee.c: too many arguments to function
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