Re: Helping to model this workload

["Neto, Antonio Jose Rodrigues" <Antonio.Jose.Rodrigues.Neto@netapp.com>]

On 7/25/13 12:45 PM, "Jens Axboe" <axboe@kernel.dk> wrote:

>On Tue, Jul 23 2013, Neto, Antonio Jose Rodrigues wrote:
>> Hi All
>> 
>> This is neto from Brazil
>> 
>> How are you?
>> 
>> I need to model the following workload:
>> 
>> Sequential Read % 35.0
>> Sequential Write % 5.0
>> Random Read % 50.0
>> Random Write % 10.0
>> Random Read Working Set(GB) 1000.0
>> Random Write Working Set(GB) 1000.0
>> Sequential Read Size(KB) 64KB
>> Sequential Write Size(KB) 64KB
>> Random Read Size(KB) 8KB
>> Random Write Size(KB) 8KB
>
>So that's 85% reads and 15% writes, first part:
>
>rw=randrw
>rwmixread=85
>
>and then you have 50/85 reads random and 35/85 reads sequential. That's
>roughly 59% reads random. On the writes, you have 10/15 random and 5/15
>sequential. That's roughly 67% writes random:
>
>percentage_random=59,67
>
>The latter I just added support for, before it only support a single
>setting for reads and writes.
>
>Fio does not support splitting block sizes on a random/sequential basis.
>You will have to improvise there.
>
>-- 
>Jens Axboe
>
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Hi Jens

This is neto from Brazil

How are you?

Thank you very much.

So basically the option right now is to use either 8KB or 64KB right?

Something like:

[workload]
bs=8k
ioengine=libaio
iodepth=2
numjobs=64
direct=1
runtime=2400
size=2000g
filename=\\.\PhysicalDrive9
filename=\\.\PhysicalDrive10
rw=randrw
rwmixread=85
percentage_random=59,67

thread
unified_rw_reporting=1
group_reporting=1


Would be nice to have something like:

block_mixed=8192,65536 (random, sequential)


Thank you

neto


>