RE: lots of closes causing lots of invalidates while running

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> -----Original Message-----
> From: Jens Axboe [mailto:axboe@xxxxxxxxx]
> Sent: Friday, 04 July, 2014 4:19 PM
> To: Elliott, Robert (Server Storage); fio@xxxxxxxxxxxxxxx
> Cc: dgilbert@xxxxxxxxxxxx
> Subject: Re: lots of closes causing lots of invalidates while running
> 
> How big are the devices? Should only open/close once per reading it, but
> if it's scsi_debug and they are small, then that might explain it. If
> that's not the case, it's definitely a but and we'll need to look into it.
> 

My original test was with 128 MiB.  
Same result with 1 GiB.
Goes away with 2 GiB and 4 GiB.



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