iometer-user

[Vedran D. <ve...@ya...>]

Hi Mark,
 
This is interesting. How long do you typically run each test for? 
 
I suspect the problem is with the fairness of the indexing algorithm into the access_grid (see IOAccess.*) that represent the read/write mix.  With one entry being either a write or a read, it has really low chances of getting hit. Unless something is broken,  we'd need to look into a fairer algorithm or you run for a longer time.
 
Ved


>________________________________
> From: "Mark_Lindholm@Dell.com" <Mark_Lindholm@Dell.com>
>To: iom...@li... 
>Sent: Tuesday, August 6, 2013 3:41 PM
>Subject: [Iometer-user] Missing Writes with 99/1 Read/Write ratio
>  
>
>
>I have attached a simple script that repeats a 4K Sequential 99/1 Read/Write with incrementing Q depth.
> 
>I have also attached the test output, which shows that the writes are sometimes missing.
> 
>If I change the Read/Write ratio to anything other than 99/1 (or 1/99 the reads will sometimes stop).
> 
>Any idea why this does not work correctly?
> 
>Mark.
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