Here's some info on the VIA chipset problem.. Here's the article that really cracked the VIA chipset problem. It seems there are problems with the default timings and latency settings: http://www.tecchannel.de/hardware/817/8.html This guy, independant of VIA, came up with some chipset register tweaks to improve performance of the PCI bus for the broken VIAs. http://www.georgebreese.com/net/software/ http://www.georgebreese.com/net/software/readmes/vlatency_v020b21_readme.HTM http://adsl.cutw.net/dlink-dsl200-via.html The linux kernel sources indicate a problem with VIA chipsets too, but the author doesn't have it fixed to his satisfaction, obviously. >From linux-2.6.7/drivers/pci/quirks.c: /* The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a workaround but VIA don't answer queries. If you happen to have good contacts at VIA ask them for me please -- Alan This appears to be BIOS not version dependent. So presumably there is a chipset level fix */ I'm wondering if I could get the tweaks that George Breese has made and implement them in linux. If I could, how would I benchmark to check for improvement? Bonnie? hdparm -tT? Some PCI benchmark? TJ Harrell - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
