Why the hell do you need 40MB/s throughput for. When recordig Full Quality Digital Video, 7.5MB/s should be enough. I have killed my RAID array, and I get 30MB/s throughput on a single disk. But you say your drives are UDMA4 ? So that is ATA66, you'll never get the troughput you want. The drives should be using UDMA5 on a ATA100 controller. See if you can set the drives to that speed on the controller. Goodluck, Erik Kruijswijk -----Oorspronkelijk bericht----- Van: radafuk [mailto:radafuk@xxxxxxxxxxxxx] Verzonden: maandag 17 december 2001 16:17 Aan: ataraid-list@xxxxxxxxxx Onderwerp: Ataraid - speeds Hi there. It seemes that I'm a lucky one. I have an A7V, with promise 20265 onboard, and it works fine using the included driver (0.03 beta) in 2.4x kernels. I'm also booting from it with lilo. (it used to work with 2.2.y AC also) (debian) (for you, unlucky ones: there should be a solution...) There's only one problem I have: speed. I tried even setting /dev/hde,hdg (they're the "striped" volumes) with hdparm, but there was no recognizable speed increase. It looks like everything's fine, drives are using UDMA-4, so on. I'd like to get at least around 40MB/s stable throughput, to make it possible to record and play uncompressed PAL video. What I get now is around a single disk's performance. It's just not enough. (and I don't think I'll ever have the money for a real disk array) By some complicated reasons (M$) I can't use pure swraid either. Any ideas? radafuk ----------------------------- I have: ASUS a7v133, with onboard promise 20265. Fasttrack "speed" bios. 2*Maxtor 54098U8 disks, 2Mb cache bonnie++ says: ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP 744M 8281 97 39438 23 11558 8 7561 91 29143 12 238.9 1 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 1271 93 +++++ +++ +++++ +++ 1607 96 +++++ +++ _______________________________________________ Ataraid-list@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/ataraid-list *********************************************************************** Aan dit bericht kunnen geen rechten worden ontleend. Ministerie van Justitie. ***********************************************************************
