> How large is the index? If it's less than a couple of GByte then it
> will be entirely in memory
It is 3GBytes big and it will grow a lot.
I have to search from the HDD which is very fast compared to the notebook's HDD.
Average seek time:
Notebook: 8-9ms
Desktop: 3.9ms
Data read:
Notebook: max. ~20MBytes/sec
Desktop: 60-80MBytes/sec
So, if the bottleneck is the HDD, it has to be 2x-3x faster on the desktop
system.
Except if reiserfs is a lot slower than NTFS.
> For example (and this is only an example) looking up a hostname in the
> DNS will take about the same time on almost any machine you can get hold of.
Ok, but I have very simple and pure tests and everything is measured
part-by-part.
..and every parts speeds up a lot on the desltop system, except the lucene
search part.
> You don't say how you're measuring search performance and you don't say
> what you're seeing.
I call my java program from command line on both systems, like:
search hello
Then it searches for bravo and collects the elapsed milliseconds between every
call to anything.
Then it displays the results. It is very simple.
> Also, what's the load on the system while you're
> running the tests? gkrellm on Linux is very useful as an overall view
> -- are you CPU bound, are you seeing lots of disk traffic? Is the
> system actually more-or-less idle?
Thanx for the hint. Since my search searches for only 30 hits, it completes too
fastly to let me
monitor it real-time.
Anyway, if reiserfs will prove to be fast enough, I'll search for other reasons
and will perform
longer tests for real-time monitoring.
Regards,
Sanyi
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