On Wed, May 16, 2007 at 01:37:16PM -0700, Barton C Massey wrote: > If you are going to use a 2.6 kernel, I highly recommend at > least 2.6.21. There have been some huge improvements and > bugfixes in the 2.6 USB stack recently. > > Also, oddly, you might try flashing your motherboard to the > latest BIOS. One of mine got a lot better---apparently the > interrupt allocation on older BIOSes can be buggy. > > In general, if your EHCI (USB 2.0 HS) doesn't work well for > other things, it probably won't work at all for this app... > > Bart
I hope someone else runs more tests with other kernels, motherboards, BIOSes, drives, and USB interfaces. A SATA speed test would make an interesting comparison. If there are any 2.6.21 live CDs available, it would be interesting to re-run some tests with these new kernels without commiting to an install. The point is that those of us running standard distros, even recently released ones, will sometimes have problems these USB2 to IDE interface devices. Some will run slow, some will have rare intermittents, others may not work at all. I expect newer kernels will fix some of those problems, but occasionally cause new problems. We aren't to the plug-and-ignore stage yet, though, and users of dirvish should be aware of that when they choose USB2 hardware. That said, the speed penalty of using USB2-connected storage is tolerable in most applications. It is prudent to swap backup drives occasionally, to protect some of the backups from vandalism, power supply failure, etc. USB2 storage makes it possible, and the speed and robustness is getting better with time. Keith -- Keith Lofstrom [EMAIL PROTECTED] Voice (503)-520-1993 KLIC --- Keith Lofstrom Integrated Circuits --- "Your Ideas in Silicon" Design Contracting in Bipolar and CMOS - Analog, Digital, and Scan ICs _______________________________________________ Dirvish mailing list [email protected] http://www.dirvish.org/mailman/listinfo/dirvish
