Messages in this thread | | | Date | Sun, 16 Dec 2001 18:30:25 +0100 (CET) | From | Roy Sigurd Karlsbakk <> | Subject | Repost: Bug in RAID subsys and/or cache handeling |
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hi all
I'm sorry to repost this - I just need some sort of fix, or perhaps try another OS, like a BSD or something
On my computer, I've set up a 2-disk stripe set (RAID-0). Each disk has some 120GB disk space, and is pretty fast. Each disk can do some 40 megs per second disk-to-memory.
However, when reading multiple, large files (3 gigs each) simultanously, vmstat first shows quite high throughput (~ 40-50 megs per sec). But as I reach the point where I've filled the cache, speed is reduced to 1-2 megs per sec.
I'm running 2.4.16 with the latest tux patches plus Andrea's IDE patch. I'm positive that this is not a tux problem. I've also tried 2.4.17-rc1, but all I got out of that was some 20-30% slower I/O.
Hardware:
Athlon 1133MHz 1GB RAM (highmem disabled in kernel) 1x20 gig disk for root partition 2x120 gig disks in RAID-0 (chunk size = 4096) for data partition
Please help me out here...
Regards
roy
-- Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA
Computers are like air conditioners. They stop working when you open Windows.
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