On 07.08.2013 11:10, Erwan Velu wrote:
On 07/08/2013 00:08, Dennis Jacobfeuerborn wrote:
Hi,
when I try to create logs with fio I get bw, iops, lat, clat and slat
logs but the slat log always has a size of 0 bytes. Is this a bug or
is data for this log only generated with specific options for fio?
Dennis,
I've been trying this on my 2.1.2 with the following job :
[read-sda-4k-para]
bs=4k
filename=/dev/sda
rw=read
write_lat_log=lat.log
On my side, the slat file is perfectly filled.
Can you provide a testing procedure & the version you use ?
I just tested the job above and these are the files produced:
[dennis@nexus fio]$ ls -l
total 11272
-rw-r--r--. 1 root root 5767080 7. Aug 12:31 lat.log_clat.log
-rw-r--r--. 1 root root 5767087 7. Aug 12:31 lat.log_lat.log
-rw-r--r--. 1 root root 0 7. Aug 12:31 lat.log_slat.log
-rw-rw-r--. 1 dennis dennis 84 7. Aug 12:31 logtest.fio
There are not errors or warnings during the fio run so it's not clear
why the file ends up being empty.
Regards,
Dennis
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