Re: [PATCH] imporve jbd2 fsync batching

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Theodore Tso wrote:
On Wed, Nov 05, 2008 at 04:10:12PM -0700, Andreas Dilger wrote:
There was no reply to my previous comments about making the maximum sleep
time be a fixed value (e.g. 15ms) instead of having it arbitrarily based
on the jiffies value, which may change between 1ms and 10ms.

I know the whole point is to make it be self-tuning, but I wonder if
we should have some knobs to control the min and max sleep times.

   	          	       	    	     	     - Ted

I think that it could be useful to have a tunable knob for the max sleep time. It would certainly be capped at a much lower level for a RAM disk than it would be for a very large RAID volume...

Ric

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