lucene-solr-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Toke Eskildsen>
Subject Re: Hardware Specs Question
Date Fri, 03 Sep 2010 10:43:49 GMT
On Fri, 2010-09-03 at 11:07 +0200, Dennis Gearon wrote:
> If you really want to see performance, try external DRAM disks.
> Whew! 800X faster than a disk.

As sexy as they are, the DRAM drives does not buy much more extra
performance. At least not at the search stage. For searching, SSDs are
not that far from holding the index fully in RAM (about 3/4 the speed in
our tests but YMMV). The CPU is the bottleneck.

That was with Lucene 2.4 so the relative numbers might have changed, but
the old lesson still stands: A well balanced system is key.

View raw message