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* Periodic sync?
@ 2009-06-16  1:16 Chris Worley
  2009-06-16  5:52 ` Gurudas Pai
  0 siblings, 1 reply; 2+ messages in thread
From: Chris Worley @ 2009-06-16  1:16 UTC (permalink / raw)
  To: fio

Is there any way to tell fio to insert a periodically sync... not sync
every I/O, but every N I/O's, or maybe on some period?

Thanks,

Chris

^ permalink raw reply	[flat|nested] 2+ messages in thread
* Re: Periodic sync?
  2009-06-16  1:16 Periodic sync? Chris Worley
@ 2009-06-16  5:52 ` Gurudas Pai
  0 siblings, 0 replies; 2+ messages in thread
From: Gurudas Pai @ 2009-06-16  5:52 UTC (permalink / raw)
  To: Chris Worley; +Cc: fio

Hello Chris,

> Is there any way to tell fio to insert a periodically sync... not sync
> every I/O, but every N I/O's, or maybe on some period?

fsync=int       If writing to a file, issue a sync of the dirty data
                 for every number of blocks given. For example, if you give
                 32 as a parameter, fio will sync the file for every 32
                 writes issued. If fio is using non-buffered io, we may
                 not sync the file. The exception is the sg io engine, which
                 synchronizes the disk cache anyway.



This should help you.

Thanks,
-Guru

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