On Fri, 2011-12-16 at 22:57 +0800, Asias He wrote:
On 12/15/2011 08:15 PM, Sasha Levin wrote:
When using AIO, submit all requests which exists in the vring in a
single
io_submit instead of one io_submit for each descriptor.
Benchmarks:
Short version: 15%+ increase in IOPS, small
On 12/15/2011 08:15 PM, Sasha Levin wrote:
When using AIO, submit all requests which exists in the vring in a single
io_submit instead of one io_submit for each descriptor.
Benchmarks:
Short version: 15%+ increase in IOPS, small increase in BW.
Read IOPS:
Before:
vda: ios=291792/0,
When using AIO, submit all requests which exists in the vring in a single
io_submit instead of one io_submit for each descriptor.
Benchmarks:
Short version: 15%+ increase in IOPS, small increase in BW.
Read IOPS:
Before:
vda: ios=291792/0, merge=0/0, ticks=35229/0, in_queue=31025, util=61.30%
