On 04/22/2015 02:53 PM, Brandon Schwartz wrote:
And by blkreplay, I meant replay the blktrace with FIO
On Wed, Apr 22, 2015 at 2:52 PM, Brandon Schwartz <schwartz.xn@xxxxxxxxx> wrote:
Is there an accurate way to capture idle time with blktrace? For
example, if I run/trace the following FIO script:
[global]
direct=1
ioengine=libaio
readwrite=read
blocksize=512k
filename=/dev/sdd
[read]
runtime=10
name=read
[read2]
stonewall=1
startdelay=40
runtime=10
name=read2
And attempt to replay it using blkreplay, it will ignore the wait time
and simply read for 20seconds instead of read 10s, wait for 40s, read
10s.
replay_no_stall=1
--
Jens Axboe
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