Ah, you may be right (no stack trace in email any more).  Somebody
recenly identified a few bottlenecks that, if I recall correctly, were
related to synchronized blocks.  I believe Doug committed some
improvements, but I can't remember which version of Lucene that is in. 
It's definitely in 1.4.1.

Otis


--- Yonik Seeley <[EMAIL PROTECTED]> wrote:

> 
> --- Otis Gospodnetic <[EMAIL PROTECTED]>
> wrote:
> 
> > The bottleneck seems to be disk IO.
> 
> But it's not.  Linux is caching the whole file, and
> there really isn't any disk activity at all.  Most of
> the threads are blocked on InputStream.refill, not
> waiting for the disk, but waiting for their turn into
> the synchronized block to read from the disk (which is
> why I asked about cacheing above that level).
> 
> CPU is a constant 50% on a dual CPU system (meaning
> 100% of 1 cpu).
> 
> -Yonik
> 
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