On Mon, Dec 03, 2007 at 05:53:42PM -0500, Venks wrote:
Based on my limited experience, 64 bit and lots of RAM will help MonetDB a lot.
On Dec 3, 2007 5:43 PM, m h <[1]sesquile@gmail.com> wrote:
Say one wanted to do some benchmarks for Monetdb. Here would be a few questions: * Does Raid 0+1 help more than RAM?
It all depends on the application and database 'hot' size (ie the size of the columns needed for you queries). If by adding memory they could (together) fit in memory then RAM is best. If that isn't possible (ie your disk bound), then adding raid 0 could improve your performance. (most db's easily fit in memory these days).
* What about multi cores? Are they currently useful?
multi cores are currently only usefull for concurrent query processing.
* Are big processor caches useful?
Yes. Memory is way too slow too keep up with cpu performance.
* What about 64 bit linux? Does that help or hurt?
64 bit gives you a much bigger address space which is good (allows for bigger columns and thus db's). It does hurt performance only be cause it uses bigger pointers and oids (the later can be fixed by using the --enable-oid32 configure option but reduces again the max number of oids to max 31-bit int value).
Or here's another way to put it. If you had between $2-$5K to spend what hardware would you buy? A bunch of PS3's ;)
A PS3 doesn't have memory (256MB only), it doesn't have a way to add disks. So for MonetDB in its current version its not okay (we use the PS3 for research though!). For monetdb you should go for the simple huge ram option. Niels
Any input would be great? thanks matt ------------------------------------------------------------------ ------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. [2]http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ MonetDB-users mailing list [3]MonetDB-users@lists.sourceforge.net [4]https://lists.sourceforge.net/lists/listinfo/monetdb-users
References
1. mailto:sesquile@gmail.com 2. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 3. mailto:MonetDB-users@lists.sourceforge.net 4. https://lists.sourceforge.net/lists/listinfo/monetdb-users
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-- Niels Nes, Centre for Mathematics and Computer Science (CWI) Kruislaan 413, 1098 SJ Amsterdam, The Netherlands room C0.02, phone ++31 20 592-4098, fax ++31 20 592-4312 url: http://www.cwi.nl/~niels e-mail: Niels.Nes@cwi.nl