Stupid question time: Have you used the "--output filename.log" option ? (that is the option I always use) Or if you want to stay with std redirection, have you tried to redirect "stderr" ? Jeff | -----Original Message----- | From: fio-owner@xxxxxxxxxxxxxxx [mailto:fio-owner@xxxxxxxxxxxxxxx] On Behalf Of | Kurt_Dorsey@xxxxxxxx | Sent: Monday, March 14, 2016 2:27 PM | To: alireza@xxxxxxxxxx | Cc: jeff.furlong@xxxxxxxx; fio@xxxxxxxxxxxxxxx | Subject: RE: Monitor IO while fio is running | | Hi Alireza, Thank you for the response | | | If I run the command on the bash command line I get this (full output with 1 second | intervals for the status /usr/local/bin/fio --group_reporting=1 --name=test_workload | --time_based --runtime=10 --rw=randread --bs=16K --filename=/dev/sdb --eta- | newline=1 | test_workload: (g=0): rw=randread, bs=16K-16K/16K-16K/16K-16K, | ioengine=sync, iodepth=1 fio-2.7-5-g5f2f Starting 1 process | Jobs: 1 (f=1): [r(1)] [36.4% done] [78176KB/0KB/0KB /s] [4886/0/0 iops] [eta | 00m:07s] | Jobs: 1 (f=1): [r(1)] [54.5% done] [79072KB/0KB/0KB /s] [4942/0/0 iops] [eta | 00m:05s] | Jobs: 1 (f=1): [r(1)] [72.7% done] [79088KB/0KB/0KB /s] [4943/0/0 iops] [eta | 00m:03s] | Jobs: 1 (f=1): [r(1)] [90.9% done] [81056KB/0KB/0KB /s] [5066/0/0 iops] [eta | 00m:01s] | Jobs: 1 (f=1): [r(1)] [100.0% done] [80304KB/0KB/0KB /s] [5019/0/0 iops] [eta | 00m:00s] | test_workload: (groupid=0, jobs=1): err= 0: pid=75170: Mon Mar 14 14:21:47 2016 | read : io=795824KB, bw=79574KB/s, iops=4973, runt= 10001msec | clat (usec): min=136, max=7872, avg=198.30, stdev=59.80 | lat (usec): min=136, max=7872, avg=198.49, stdev=59.81 | clat percentiles (usec): | | But if I redirect to a file the file is missing the Jobs:1 intervals /usr/local/bin/fio -- | group_reporting=1 --name=test_workload --time_based --runtime=10 -- | rw=randread --bs=16K --filename=/dev/sdb --eta-newline=1 > test.out cat test.out | test_workload: (g=0): rw=randread, bs=16K-16K/16K-16K/16K-16K, | ioengine=sync, iodepth=1 fio-2.7-5-g5f2f Starting 1 process | | test_workload: (groupid=0, jobs=1): err= 0: pid=75251: Mon Mar 14 14:23:30 2016 | read : io=796416KB, bw=79634KB/s, iops=4977, runt= 10001msec | clat (usec): min=136, max=519, avg=198.15, stdev=30.34 | lat (usec): min=136, max=519, avg=198.34, stdev=30.35 | clat percentiles (usec): | | 1.00th=[ 145], 5.00th=[ 161], 10.00th=[ 163], 20.00th=[ 169], | | 30.00th=[ 179], 40.00th=[ 183], 50.00th=[ 193], 60.00th=[ 207], | | 70.00th=[ 211], 80.00th=[ 235], 90.00th=[ 243], 95.00th=[ 247], | | 99.00th=[ 262], 99.50th=[ 270], 99.90th=[ 282], 99.95th=[ 290], | | 99.99th=[ 314] | bw (KB /s): min=78304, max=80960, per=100.00%, avg=79654.74, | stdev=673.82 | lat (usec) : 250=96.25%, 500=3.75%, 750=0.01% | cpu : usr=2.49%, sys=11.79%, ctx=49808, majf=0, minf=37 | IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, | >=64=0.0% | submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, | >=64=0.0% | complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, | >=64=0.0% | issued : total=r=49776/w=0/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0 | latency : target=0, window=0, percentile=100.00%, depth=1 | | Run status group 0 (all jobs): | READ: io=796416KB, aggrb=79633KB/s, minb=79633KB/s, maxb=79633KB/s, | mint=10001msec, maxt=10001msec | | Disk stats (read/write): | sdb: ios=49309/0, merge=147930/0, ticks=8643/0, in_queue=8627, util=86.28% | | | I have also tried | | tee test.out | | With the same resules. | Looking at the FIO source I see that when Jen's uses log_buf ( it will output to a | file and I can also watch the output inside python but when uses printf( it will only | output to the screen. | | Thank you, | Kurt | | -----Original Message----- | From: Alireza Haghdoost [mailto:alireza@xxxxxxxxxx] | Sent: Monday, March 14, 2016 1:37 PM | To: Dorsey, Kurt | Cc: jeff.furlong@xxxxxxxx; fio@xxxxxxxxxxxxxxx | Subject: Re: Monitor IO while fio is running | | You should be able to redirect it to a file. Would you mind share with us how you | set the redirection? | | On Mon, Mar 14, 2016 at 1:03 PM, wrote: | > Thank you Jeff for the reply. | > | > I have been playing around with this but unfortunately I cannot get | > the output to be outputted anywhere other than the screen / terminal. | > I have tried redirecting it to a txt file and parsing with with a | > python script but nothing ever gets output. (It only outputs to the | > screen) | > | > I haven't done C programming in years but I am trying to figure out | > from the code why this is. I see in the eta.c file | > | > void display_thread_status(struct jobs_eta *je) { ... | > printf("%s", output); | > | > if (!eta_new_line_init) { | > fio_gettime(&disp_eta_new_line, NULL); eta_new_line_init = 1; } else | > if (eta_new_line && mtime_since_now(&disp_eta_new_line) > | > eta_new_line) { fio_gettime(&disp_eta_new_line, NULL); | > eta_new_line_pending = 1; } | > | > fflush(stdout); | > | > | > It prints everything to the screen but I cannot redirect it at all | > | > Thoughts? | > Thank you, | > Kurt | > | > | > -----Original Message----- | > From: Jeff Furlong [mailto:jeff.furlong@xxxxxxxx] | > Sent: Monday, March 14, 2016 12:56 PM | > To: Dorsey, Kurt ; fio@xxxxxxxxxxxxxxx | > Subject: RE: Monitor IO while fio is running | > | > You might add --eta=always and --eta-newline=1 to get the current IOPs rate | every 1s, printed to stdout. You can parse that current IOPs rate via a script and | do something. I believe the IOPs rate is recalculated every 1s, not the average | from beginning of test. | > | > Not sure why --eta and --eta-newline is not in the latest HOWTO notes. | > | > Regards, | > Jeff | > | > -----Original Message----- | > From: fio-owner@xxxxxxxxxxxxxxx [mailto:fio-owner@xxxxxxxxxxxxxxx] On | > Behalf Of Kurt_Dorsey@xxxxxxxx | > Sent: Saturday, March 12, 2016 2:20 PM | > To: fio@xxxxxxxxxxxxxxx | > Subject: Monitor IO while fio is running | > | > I may just not know how to do this | > I know about the ability to touch /tmp/fio-dump-status which will dump the output | of fio to a file or stdout while the test is running. What I am looking for is to be able | to dump the write_iops_log while fio is running so that I can see the point in time | average IOps for a given interval For example if I have log_avg_msec=60000 it will | write an iops.log file with 60second intervals, unfortunately this file doesn't get | created until fio exits. Is there a way to get this to dump on a regular basis (or by | touching a file in /tmp) so that I can tail the output? | > | > I am looking for a way to get point in time status via a script and | > the output from tmp-dump-status only gives me averages from the start | > of time rather than the last interval | > | > Thank you, | > Kurt | > -- | > To unsubscribe from this list: send the line "unsubscribe fio" in the | > body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at | > http://vger.kernel.org/majordomo-info.html | > Western Digital Corporation (and its subsidiaries) E-mail Confidentiality Notice & | Disclaimer: | > | > This e-mail and any files transmitted with it may contain confidential or legally | privileged information of WDC and/or its affiliates, and are intended solely for the | use of the individual or entity to which they are addressed. 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