Messages in this thread | | | Subject | Re: Volume Managers in Linux | From | Zlatko Calusic <> | Date | 04 Nov 1998 18:50:57 +0100 |
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Shawn Leas <sleas@ixion.honeywell.com> writes:
> On Tue, 3 Nov 1998, Albert D. Cahalan wrote: > > > > Wouldn't you like to push all that crap out to userspace? > > > > If you are serious about RAID in userspace, go away. I'll assume you > > didn't really mean to type that. > > Well... Software RAID performance suxorz anyway, but I absolutely
Really?
Pentium 166MMX 64 MB RAID M2954ESP + WDC AC22000L (raid0 + 4k fs block)
-------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 200 7277 95.0 16207 63.3 6473 51.9 6276 78.8 12670 40.5 155.0 4.8 ^^^^^ ^^^^ ^^^^^ ^^^^^
Pentium 166MMX 64 MB + SCSI Fujitsu M2954ESP 4GB
-------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 200 6491 89.3 7803 32.5 2759 23.0 5972 79.0 7111 24.5 92.2 3.5
Pentium 166MMX 64 MB + UDMA WDC AC22000L 2GB
-------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 200 6199 88.7 7224 32.6 2559 22.0 6048 80.5 7117 25.4 65.5 2.1
Next time you could test things before you preach. :)
Regards, -- Posted by Zlatko Calusic E-mail: <Zlatko.Calusic@CARNet.hr> --------------------------------------------------------------------- Multitasking = 3 PCs and a chair with wheels!
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