Stephan, > here benchmark from my system with an fasttrak-tx4 (same card jonathan > has) with WD1800BB : The WD1800BB and the WD1200BB use the same technology (same data density, fewer platters). The streaming speed should be very similar. > /dev/hde: > Timing buffer-cache reads: 128 MB in 0.28 seconds =457.14 MB/sec > Timing buffered disk reads: 64 MB in 1.37 seconds = 46.72 MB/sec > > WD1800BB on onboard ultra100 controller : > > /dev/hdo: > Timing buffer-cache reads: 128 MB in 0.28 seconds =457.14 MB/sec > Timing buffered disk reads: 64 MB in 1.58 seconds = 40.51 MB/sec > > WD1800BB on onboard ultra33 controller : > > /dev/hda: > Timing buffer-cache reads: 128 MB in 0.28 seconds =457.14 MB/sec > Timing buffered disk reads: 64 MB in 2.55 seconds = 25.10 MB/sec OK. We've found a potential issue. Are the disks being identified as UDMA-33 or UDMA-66/100/133? The performance numbers agree too closely for this to be a coincidence. Check the boot logs. Good luck. Peter Ashford - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
