Re: [TSVN] TSVNCache too resource intensive on large working copies

At 10:15 27/05/2005 +0200, you wrote:

>I do not know in which order disk I/O requests are queued by the OS:
>the order they've been requested, task priority or process priority
>class? Maybe you could reduce the priority class of the cache process?
>Something like
>SetSetPriorityClass(GetCurrentProcess(), BELOW_NORMAL_PRIORITY_CLASS);

I don't think that's really the way to tackle it - it's not an issue of
process/thread priority which is primarily a CPU thing. The problem is
that once a disk access has started, it takes so long that there's ages
before another one can happen.

As Stephan has said, the crawler thread is already 'idle' priority, but
that's not helping, because that thread's blocked all the time anyway.

It would be interesting to do some experiments with stalling the crawler
for longer between each bit of work, to see if that made a dramatic
difference to people who are having these problems.

Will

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Received on Fri May 27 10:25:32 2005