On 2014-07-21 22:25, Vasily Tarasov wrote:
Hi Jens,
I tried your patch, but it didn't help. Interestingly, the number of
threads changes in the end. At first, during the run:
# ps -eLf | grep fio
root 5224 4274 5224 1 2 11:12 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5225 0 2 11:12 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5231 5224 5231 60 1 11:12 ? 00:00:07 fio
--status-interval 10 --minimal fios/1.fio
root 5260 5237 5260 0 1 11:12 pts/0 00:00:00 grep fio
[root@bison01 vass]# ps -eLf | grep fio
root 5224 4274 5224 0 2 11:12 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5225 0 2 11:12 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5231 5224 5231 16 1 11:12 ? 00:00:21 fio
--status-interval 10 --minimal fios/1.fio
root 5293 5237 5293 0 1 11:14 pts/0 00:00:00 grep fio
[root@bison01 vass]# ps -eLf | grep fio
root 5224 4274 5224 0 2 11:12 pts/1 00:00:01 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5225 0 2 11:12 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5231 5224 5231 12 1 11:12 ? 00:01:13 fio
--status-interval 10 --minimal fios/1.fio
root 5411 5237 5411 0 1 11:22 pts/0 00:00:00 grep fio
Later, when the threads are stuck:
# ps -eLf | grep fio
root 5224 4274 5224 0 16 11:12 pts/1 00:00:02 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5225 0 16 11:12 pts/1 00:00:01 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5458 0 16 11:25 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5459 0 16 11:25 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5460 0 16 11:25 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5461 0 16 11:25 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5462 0 16 11:25 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5471 0 16 11:25 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5472 0 16 11:26 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5475 0 16 11:26 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5476 0 16 11:26 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5477 0 16 11:26 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5478 0 16 11:26 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5487 0 16 11:26 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5488 0 16 11:27 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 5224 4274 5489 0 16 11:27 pts/1 00:00:00 fio
--status-interval 10 --minimal fios/1.fio
root 6665 5237 6665 0 1 13:21 pts/0 00:00:00 grep fio
Is the number of threads supposed to change?..
Here is the fio file I'm using:
<snip starts>
# cat fios/1.fio
[global]
rw=write
bs=8m
direct=0
[sdaa]
filename=/dev/sdaa
<snip ends>
Command line is
fio --status-interval 10 --minimal fios/1.fio
Thanks, I'll try and reproduce it tomorrow.
--
Jens Axboe
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