Messages in this thread |  | | | Date | Fri, 19 Jun 1998 20:55:19 +0200 (MET DST) | | From | Davide Rossetti <> | | Subject | striping (RAID0) performance ? |
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Hi folks,
I'm testing RAID0 performance of my linux box and I'm not really impressed. I seem to get something around 10 MB/s towards a 2 aic7xxx controllers, 4 disks setup. some simple benchmark results are available at: <A HREF="http://apemaia.roma1.infn.it/~rossetti/testraid3.txt"> Could someone explain to me why aren't they so exciting ?
It seems that the md driver is only remapping sectors, not using any I/O overlapping. this way the performance gain is marginal. Am I wrong ?
+------------------------------------------------------------------+ |Rossetti Davide INFN - Sezione Roma I - gruppo V, prog. APEmille| | web : http://apemaia.roma1.infn.it/~rossetti | | """"" E-mail : davide.rossetti@roma1.infn.it | | |o o| phone : (+39)-6-49914412 | |--o00O-O00o-- fax : (+39)-6-4957697 | | address: Dipartimento di Fisica (V.E.) | | Universita' di Roma "La Sapienza" | | P.le Aldo Moro,5 I - 00185 Roma - Italy| | pgp pub. key: finger rossetti@apemaia.roma1.infn.it | | | |"Most people think about twice a year. I got famous by thinking | | once a week." - George B. Shaw (see Appendix A) | +------------------------------------------------------------------+
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