Re: [PERFORM] Quad processor options - summary

2004-05-14 Thread Mark Kirkwood
I would recommend trying out several stripe sizes, and making your own measurements. A while ago I was involved in building a data warehouse system (Oracle, DB2) and after several file and db benchmark exercises we used 256K stripes, as these gave the best overall performance results for both

Off Topic - Re: [PERFORM] Quad processor options - summary

2004-05-13 Thread Greg Spiegelberg
This is somthing I wish more of us did on the lists. The list archives have solutions and workarounds for every variety of problem but very few summary emails exist. A good example of this practice is in the sun-managers mailling list. The original poster sends a SUMMARY reply to the list with

Re: [PERFORM] Quad processor options - summary

2004-05-13 Thread Paul Tuckfield
One big caveat re. the SAME striping strategy, is that readahead can really hurt an OLTP you. Mind you, if you're going from a few disks to a caching array with many disks, it'll be hard to not have a big improvement But if you push the envelope of the array with a SAME configuration,

[PERFORM] Quad processor options - summary

2004-05-12 Thread Bjoern Metzdorf
Hi, at first, many thanks for your valuable replies. On my quest for the ultimate hardware platform I'll try to summarize the things I learned. - This is our current setup: Hardware: Dual Xeon DP 2.4 on a TYAN S2722-533 with HT enabled