How to get IOPS when using terse output
Hi, all,
I failed to find IOPS results for read/write under terse mode (with --minimal param when invoking fio program), while IOPS does exist in normal output without --minimal param.
It seems that I even cannot calculate it out only with the tersed output (since I don't know the total number of IO). Then, how should I get IOPS results when using terse output?
Yours,
Peter
Hello,
IOPS is definitely in the terse output. IIRC it's the column just after the bandwidth (don't remember the column # off hand; I have a awk script to pull out the interesting data). Look at the bottom of the HOWTO file for the layout of terse output.
z!
________________________________________
From: [email protected] [[email protected]] on behalf of Peter Xu [[email protected]]
Sent: Wednesday, February 13, 2013 2:44 AM
To: [email protected]
Subject: How to get IOPS when using terse output
Hi, all,
I failed to find IOPS results for read/write under terse mode (with --minimal param when invoking fio program), while IOPS does exist in normal output without --minimal param.
It seems that I even cannot calculate it out only with the tersed output (since I don't know the total number of IO). Then, how should I get IOPS results when using terse output?
As I mentioned, I use an awk script to extract the relevant parts
B/W columns $7 and $48
IOPS columns $8 and $49
completion latency columns $16 and $57
z!
Quoted 9 lines · Peter Xu
Hi, all,
I failed to find IOPS results for read/write under terse mode (with --minimal param when invoking fio program), while IOPS does exist in normal output without --minimal param.
It seems that I even cannot calculate it out only with the tersed output (since I don't know the total number of IO). Then, how should I get IOPS results when using terse output?
As Carl mentions, the IOPS are there. But let me make a suggestion to move over to the json format instead. It's easy to parse by computers and humans, and new performance metrics can be added without causing breakage in existing setups. The minimal/csv format is somewhat fragile for that.
That said, IOPS is there in the minimal output :-)
Signature · 1 line
Jens Axboe
----- Original Message -----
Quoted 27 lines
From: "Jens Axboe" <[email protected]>
To: "Peter Xu" <[email protected]>
Cc: [email protected]
Sent: Monday, 18 February, 2013 9:08:29 AM
Subject: Re: How to get IOPS when using terse outputQuoted 7 lines · Peter Xu
Hi, all,
I failed to find IOPS results for read/write under terse mode (with --minimal param when invoking fio program), while IOPS does exist in normal
output without --minimal param.Quoted 5 lines
It seems that I even cannot calculate it out only with the tersed output
(since I don't know the total number of IO). Then, how should I get IOPS
results when using terse output?As Carl mentions, the IOPS are there. But let me make a suggestion to move over to the json format instead. It's easy to parse by computers and humans, and new performance metrics can be added without causing breakage in existing setups. The minimal/csv format is somewhat fragile
for that.
Quoted 5 lines
That said, IOPS is there in the minimal output :-)
--
Jens Axboe
Maybe you consider that version 3 of the terse output is only used since Fio version 2.0.3!
Before that I think that IOPS are not in the terse output (http://freecode.com/projects/fio/releases/341331).
In the current Debian (http://packages.debian.org/squeeze/fio) and Ubuntu LTS releases (http://packages.ubuntu.com/precise/fio) the Fio version is before 2.0.3 and therefore the terse output is not of version 3.
As Jens said, you can also switch to JSON format instead.
So maybe you are stuck to use Fio from the git repo to have a newer version.
Regards, Georg
Quoted 33 lines · Georg Sch�nberger
----- Original Message -----
Quoted 27 lines
From: "Jens Axboe" <[email protected]>
To: "Peter Xu" <[email protected]>
Cc: [email protected]
Sent: Monday, 18 February, 2013 9:08:29 AM
Subject: Re: How to get IOPS when using terse outputQuoted 7 lines · Peter Xu
Hi, all,
I failed to find IOPS results for read/write under terse mode (with --minimal param when invoking fio program), while IOPS does exist in normal
output without --minimal param.Quoted 5 lines
It seems that I even cannot calculate it out only with the tersed output
(since I don't know the total number of IO). Then, how should I get IOPS
results when using terse output?As Carl mentions, the IOPS are there. But let me make a suggestion to move over to the json format instead. It's easy to parse by computers and humans, and new performance metrics can be added without causing breakage in existing setups. The minimal/csv format is somewhat fragile
for that.Quoted 5 lines
That said, IOPS is there in the minimal output :-)
--
Jens Axboe
Quoted 6 lines
Maybe you consider that version 3 of the terse output is only used since Fio version 2.0.3! Before that I think that IOPS are not in the terse output (http://freecode.com/projects/fio/releases/341331). In the current Debian (http://packages.debian.org/squeeze/fio) and Ubuntu LTS releases (http://packages.ubuntu.com/precise/fio) the Fio version is before 2.0.3 and therefore the terse output is not of version 3.
Ah yes, good point, I always seem to assume that people are running fio out of the git repo. But yes, the IOPS is a recent(ish) addition. Though 2.0.3 is more than a year old at this point.
Quoted 2 lines
As Jens said, you can also switch to JSON format instead.
So maybe you are stuck to use Fio from the git repo to have a newer version.
Yep, json is an even newer addition than terse v3, so an update is in order in any case.
Signature · 1 line
Jens Axboe