* Definition of IO depth distribution in the terse output
@ 2013-07-25 20:03 asomers
2013-07-26 3:10 ` Jens Axboe
0 siblings, 1 reply; 5+ messages in thread
From: asomers @ 2013-07-25 20:03 UTC (permalink / raw)
To: fio
The man page section for the terse output format describes the IO
depth distribution fields as "<=1, 2, 4, 8, 16, 32, >=64". Should the
last entry be ">32" instead? Similarly, in the section for IO latency
distribution, should the final value be ">2000" instead of ">=2000"?
-Alan
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Definition of IO depth distribution in the terse output
2013-07-25 20:03 Definition of IO depth distribution in the terse output asomers
@ 2013-07-26 3:10 ` Jens Axboe
2013-07-26 14:51 ` asomers
0 siblings, 1 reply; 5+ messages in thread
From: Jens Axboe @ 2013-07-26 3:10 UTC (permalink / raw)
To: asomers; +Cc: fio
On Thu, Jul 25 2013, asomers@gmail.com wrote:
> The man page section for the terse output format describes the IO
> depth distribution fields as "<=1, 2, 4, 8, 16, 32, >=64". Should the
> last entry be ">32" instead? Similarly, in the section for IO latency
> distribution, should the final value be ">2000" instead of ">=2000"?
The bucket named 32 is 32 and up (but not including) 64. And so forth.
--
Jens Axboe
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Definition of IO depth distribution in the terse output
2013-07-26 3:10 ` Jens Axboe
@ 2013-07-26 14:51 ` asomers
2013-07-26 15:07 ` Jens Axboe
0 siblings, 1 reply; 5+ messages in thread
From: asomers @ 2013-07-26 14:51 UTC (permalink / raw)
To: Jens Axboe; +Cc: fio
I still don't understand how there isn't a gap. Are you saying that
the buckets go like this:
<=1, >=2, >=4, >=8, >=16, >=32, >=64 ?
Is the lowest bucket misnamed, or is there a gap between 1 and 2?
On Thu, Jul 25, 2013 at 9:10 PM, Jens Axboe <axboe@kernel.dk> wrote:
> On Thu, Jul 25 2013, asomers@gmail.com wrote:
>> The man page section for the terse output format describes the IO
>> depth distribution fields as "<=1, 2, 4, 8, 16, 32, >=64". Should the
>> last entry be ">32" instead? Similarly, in the section for IO latency
>> distribution, should the final value be ">2000" instead of ">=2000"?
>
> The bucket named 32 is 32 and up (but not including) 64. And so forth.
>
> --
> Jens Axboe
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Definition of IO depth distribution in the terse output
2013-07-26 14:51 ` asomers
@ 2013-07-26 15:07 ` Jens Axboe
2013-07-26 22:28 ` asomers
0 siblings, 1 reply; 5+ messages in thread
From: Jens Axboe @ 2013-07-26 15:07 UTC (permalink / raw)
To: asomers; +Cc: fio
On 07/26/2013 08:51 AM, asomers@gmail.com wrote:
> I still don't understand how there isn't a gap. Are you saying that
> the buckets go like this:
> <=1, >=2, >=4, >=8, >=16, >=32, >=64 ?
>
> Is the lowest bucket misnamed, or is there a gap between 1 and 2?
Bucket0 1
Bucket1 2..3
Bucket2 4..7
Bucket3 8..15
Bucket4 16..31
Bucket5 32..63
Bucket6 64..
--
Jens Axboe
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Definition of IO depth distribution in the terse output
2013-07-26 15:07 ` Jens Axboe
@ 2013-07-26 22:28 ` asomers
0 siblings, 0 replies; 5+ messages in thread
From: asomers @ 2013-07-26 22:28 UTC (permalink / raw)
To: Jens Axboe; +Cc: fio
On Fri, Jul 26, 2013 at 9:07 AM, Jens Axboe <axboe@kernel.dk> wrote:
> On 07/26/2013 08:51 AM, asomers@gmail.com wrote:
>> I still don't understand how there isn't a gap. Are you saying that
>> the buckets go like this:
>> <=1, >=2, >=4, >=8, >=16, >=32, >=64 ?
>>
>> Is the lowest bucket misnamed, or is there a gap between 1 and 2?
>
> Bucket0 1
Should this be 0..1? Or is there some guarantee that there will
always be at least one outstanding IO?
> Bucket1 2..3
> Bucket2 4..7
> Bucket3 8..15
> Bucket4 16..31
> Bucket5 32..63
> Bucket6 64..
>
> --
> Jens Axboe
>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-07-26 22:28 UTC | newest]
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2013-07-25 20:03 Definition of IO depth distribution in the terse output asomers
2013-07-26 3:10 ` Jens Axboe
2013-07-26 14:51 ` asomers
2013-07-26 15:07 ` Jens Axboe
2013-07-26 22:28 ` asomers
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