fio bug report

fio bug report

[Denis Polom]

Hi

on version fio-2.13-1.25.x86_64 I found following bug:

when fio is executed with options to write to files (etc : 
--write_iops_log, --write_bw_log, --write_lat_log) it creates files with 
wrong value for one of the coordinates. So creating the graphs by 
gnuplot is not possible.

file context example:

341692, 0, 1, 1048576
342510, 0, 1, 1048576
343728, 0, 1, 1048576
344551, 0, 1, 1048576

In old fio version fio-2.8-1.34.x86_64 was everything fine:

339208, 86, 1, 1048576
340561, 26, 1, 1048576
341692, 54, 1, 1048576
342510, 72, 1, 1048576

Thank you

Denis

Re: fio bug report

[Sitsofe Wheeler]

Hi,

On 7 November 2016 at 11:21, Denis Polom <dpolom@suse.de> wrote:
>
> on version fio-2.13-1.25.x86_64 I found following bug:
>
> when fio is executed with options to write to files (etc : --write_iops_log,
> --write_bw_log, --write_lat_log) it creates files with wrong value for one
> of the coordinates. So creating the graphs by gnuplot is not possible.
>
> file context example:
>
> 341692, 0, 1, 1048576
> 342510, 0, 1, 1048576
> 343728, 0, 1, 1048576
> 344551, 0, 1, 1048576
>
> In old fio version fio-2.8-1.34.x86_64 was everything fine:
>
> 339208, 86, 1, 1048576
> 340561, 26, 1, 1048576
> 341692, 54, 1, 1048576
> 342510, 72, 1, 1048576

Could you include a minimal job file that reproduced the problem?
Further do you think it's possible to bisect down to the fio release
that introduced the issue?

-- 
Sitsofe | http://sucs.org/~sits/

Re: fio bug report

[Denis Polom]

Hi

command:

pdsh -f 3 -R ssh -w ceph@artemis,callisto,demeter sudo /usr/bin/fio 
--ioengine=rbd --clientname=admin --pool=cbt-librbdfio 
--rbdname=cbt-librbdfio-`hostname -s`-0 --invalidate=0 --rw=read 
--runtime=600 --ramp_time=None --numjobs=1 --direct=1 --bs=4194304B 
--iodepth=64 --end_fsync=0 
--write_iops_log=/tmp/cbt/00000000/LibrbdFio/osd_ra-00004096/op_size-04194304/concurrent_procs-003/iodepth-064/read/output.0 
--write_bw_log=/tmp/cbt/00000000/LibrbdFio/osd_ra-00004096/op_size-04194304/concurrent_procs-003/iodepth-064/read/output.0 
--write_lat_log=/tmp/cbt/00000000/LibrbdFio/osd_ra-00004096/op_size-04194304/concurrent_procs-003/iodepth-064/read/output.0 
--name=librbdfio-`hostname -s`-0  > 
/tmp/cbt/00000000/LibrbdFio/osd_ra-00004096/op_size-04194304/concurrent_procs-003/iodepth-064/read/output.0


Yes it is possible to bisect down to fio release that makes a problem.

Thank you

dp


On 11/08/2016 08:25 AM, Sitsofe Wheeler wrote:
> Hi,
>
> On 7 November 2016 at 11:21, Denis Polom <dpolom@suse.de> wrote:
>> on version fio-2.13-1.25.x86_64 I found following bug:
>>
>> when fio is executed with options to write to files (etc : --write_iops_log,
>> --write_bw_log, --write_lat_log) it creates files with wrong value for one
>> of the coordinates. So creating the graphs by gnuplot is not possible.
>>
>> file context example:
>>
>> 341692, 0, 1, 1048576
>> 342510, 0, 1, 1048576
>> 343728, 0, 1, 1048576
>> 344551, 0, 1, 1048576
>>
>> In old fio version fio-2.8-1.34.x86_64 was everything fine:
>>
>> 339208, 86, 1, 1048576
>> 340561, 26, 1, 1048576
>> 341692, 54, 1, 1048576
>> 342510, 72, 1, 1048576
> Could you include a minimal job file that reproduced the problem?
> Further do you think it's possible to bisect down to the fio release
> that introduced the issue?
>