How to get latency logs after 1.39?

* How to get latency logs after 1.39?
@ 2012-07-09 21:38 Scott Emery
  2012-07-10 22:39 ` emery
  0 siblings, 1 reply; 3+ messages in thread
From: Scott Emery @ 2012-07-09 21:38 UTC (permalink / raw)
  To: fio

	I eventually want to specify a job on the command line that includes
collecting latency/bandwidth/iops logs.

	I have a command/job script combination that makes latency
logs in 1.38 and doesn't in 1.39.   I fail to get latency logs for a fair
sample of fio versions from 1.39 to 2.07. I discovered this in attempting
to figure out where the behavior changed.

cat ./run
#
/loaner/semery/fio/fio-1.39/fio --output test.small.loaner --latency-log --bandwidth-log  --alloc-size=4096 test.small

cat test.small
#
[global]
bs=2m
ioengine=libaio
iodepth=1
size=1g
direct=1
runtime=1200
directory=/loaner/semery/fio/latencylogs
group_reporting

[seq-read]
rw=read
numjobs=2

[seq-write]
new_group
rw=write
numjobs=1

When run uses fio-1.38 I get the following:
[semery@lou2-mov4 latencylogs]$ ./run
[semery@lou2-mov4 latencylogs]$ ls
run		   seq-write.3.0	  test.putgetstorm.iod4.loaner
seq-read.1.0	   seq-write_clat.log	  test.small
seq-read.2.0	   seq-write_slat.log	  test.small.loaner

With fio-1.39 I get:
[semery@lou2-mov4 latencylogs]$ ls
run	      seq-write.3.0	     test.putgetstorm.iod4.loaner
seq-read.1.0  test.putgetstorm	     test.small
seq-read.2.0  test.putgetstorm.iod4  test.small.loaner

I grovelled through a diff -r of 1.38 and 1.39 and the significant looking
difference is this:

diff -r fio-1.38/init.c fio-1.39/init.c
884,886d883
<       def_thread.o.write_bw_log = write_bw_log;
<       def_thread.o.write_lat_log = write_lat_log;
<

	Have latency logs, et. al. been deprecated?  Is there a  new/better
way to get them?

Scott Emery
emery@sgi.com

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