Ide performance (was RAID0 Performance problems)

red disk reads: 64 MB in 3.11 seconds = 20.58 MB/sec Tests with bonnie or iozone have the same reuslts, RAID is slower then a single HD :-( Does anybody has an idea what's wrong with my setup?? Thx, Andreas -- Andreas Peter *** [EMAIL PROTECTED] - To unsubscribe from this list: send the

Re: SW-RAID0 Performance problems

buffered disk reads: 64 MB in 3.14 seconds = 20.38 MB/sec bash-2.04# hdparm -tT /dev/hda3 /dev/hda3: Timing buffer-cache reads: 128 MB in 1.31 seconds = 97.71 MB/sec Timing buffered disk reads: 64 MB in 2.26 seconds = 28.32 MB/sec Andreas -- Andreas Peter *** [EMAIL PROTECTED] - To uns

Re: SW-RAID0 Performance problems

ing buffer-cache reads: 128 MB in 1.30 seconds = 98.46 MB/sec Timing buffered disk reads: 64 MB in 2.26 seconds = 28.32 MB/sec It looks like reading on /dev/hda3 locks /dev/hdc3 ... Is it necessary to apply the ide-patches to the kernel ? Andreas -- Andreas Peter *** [EMAIL PROTECTED]

Re: SW-RAID0 Performance problems

= 0 (off) readahead= 8 (on) geometry = 59556/16/63, sectors = 60032448, start = 0 the same on /dev/hdc I played with different hdparm-settings, but it's not possible to speed up the HDs Andreas -- Andreas Peter *** [EMAIL PROTECTED] - To unsubscribe from this list: send the

Re: SW-RAID0 Performance problems

fetched, but it's the > only suggestion I can think of. The Board ist a Gigabyte 6BXDS (BX-Chipset) and 2 Celeron 533 I think the hardware is ok. > I usually get a good speedup from using RAID-0 on 2.4.3 with IDE. Both > with two disks and with six. This is with Intel PIIX4 and Pr

Re: SW-RAID0 Performance problems

Am Freitag, 13. April 2001 18:07 schrieb David Rees: > Cconfig and setup looks OK. > > What happens if your run hdparm -t /dev/hda and /dev/hdc at the same time? Good idea! The performance is only ~11MB/sec per disk There is a bottleneck somewhere... Andreas -- Andreas Peter *

Re: SW-RAID0 Performance problems

262584 82 Linux swap /dev/hda3 543 59556 29743056 fd Linux raid autodetect My board is a Gigabyte 6BXDS BX-Chipset 2 Celerons@533 MHz Andreas -- Andreas Peter *** [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in

SW-RAID0 Performance problems

with 2.4.3, or is it necessary to apply patches to the kernel? Or did I something wrong?? Thank you for every hint! Andreas -- Andreas Peter *** [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More