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Re: how to counteract slowdown



On Mon, Nov 19, 2001 at 01:01:32PM -0800, Andrew Morton wrote:
> "Patrick C. F. Ernzer" wrote:
> > --On Tuesday, November 13, 2001 09:04:19 PM -0800 Andrew Morton
> > > It's sort-of like that now.  At 50%-70% occupancy we do a synchronous
> > > checkpoint.
> > 
> > I'm not sure I get what you mean. Does this mean that there are sync writes
> > until the journal is empty or until it is less then 50% full?
> 
> Until it's empty, I'm afraid.   If we determine that there is
> not sufficient room in the journal we write out _all_ checkpointable
> data.
> 

Is there any major reason to do it this way?

I run a large (400MB) journal to get the async writes, but if I do a little
too much writing, it will checkpoint until the journal is empty?  That'd be
very bad for me.





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