On 07/22/2016 12:55 PM, Jens Axboe wrote:
On 07/22/2016 12:52 PM, Jeff Furlong wrote:
Too late, I already put v2 patch through the process. Some good, some
bad. The good is that no more dropped entries appear in the middle!
So for the iops and bw logs, I get results such as:
999, 293814, 0, 0
2000, 354857, 0, 0
3000, 383081, 0, 0
...
57000, 321946, 0, 0
58000, 321566, 0, 0
59000, 321596, 0, 0
The first sample is slightly off, but well within a reasonable
tolerance. The last sample is always missing (runtime=60s).
The bad is that the slat/clat/lat log is not doing averages any more,
such as log_avg_msec=1000, but it's logging every value.
# fio --name=test_job --ioengine=libaio --direct=1 --rw=randread
--iodepth=256 --size=100% --numjobs=4 --bs=4k --filename=/dev/nvme0n1
--group_reporting --write_bw_log=test_job --write_iops_log=test_job
--write_lat_log=test_job --log_avg_msec=1000 --disable_lat=0
--disable_clat=0 --disable_slat=0 --runtime=60s --time_based
--output=test_job
OK, I guess it's not perfect! I'll tackle that one.
Try current -git, this should fix that:
http://git.kernel.dk/cgit/fio/commit/?id=b392f36daf7a6c2895d899320fa89d35722567c2
--
Jens Axboe
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