Messages in this thread |  | | From | Neil Brown <> | Date | Sat, 2 Dec 2000 06:56:43 +1100 (EST) | Subject | Re: Some problems with the raid-stuff in 2.4.0-test12pre3 |
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On Friday December 1, sky@sysv.de wrote: > On Fri, Dec 01, 2000 at 01:11:45PM +1100, Neil Brown wrote: > > On Thursday November 30, sky@dereference.de wrote: > > > Hello people, > > > > > > I have some trouble with the raid-stuff. ... > > > > Is it just "very slow", but it eventually finishes, it is it so slow, > > that it actually stops and doesn't make any progress at all? > > > > raid5 in 2.4 is definately slower than in 2.2. Could that be all that > > you are seeing? > > It's so slow that it's unusable. Especially writing. open() and > close()-calls often hang for 20 seconds or more. > write-calls hang for 3-4 seconds. This has to be a bug. > But yes, after a long time, it finishes ;)
Well, that does sound slower than I would expect....
1/ Could you try:
http://cgi.cse.unsw.edu.au/~neilb/patches/linux/2.4.0-test12-pre3/patch-E-raid5
and tell me how much that helps.
2/ Try a larger chunk size. My testing suggests 64K is a good starting point.
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