On Tuesday 19 August 2003 23.52, Scharf Yuval wrote: > Nicolas, If you are reffering to hdb you are wrong because there is no > device there. > > So, If I sum up your answers then my HD is capable of 30MB/s. > The UDMA(100) is a sales persons trick. > My bus is 33Mhz and it is not holding back my HD. > > So, If I like to buy a new motherboard and a new HD, what should I buy? > Assume that I would like to get the best a person might expect from a home > computer. > Try going to a 2.6 kernel. I got around 20% boost in through put by doing this. I think there is also some expermental IDE stuff you can enable in 2.4 which could give you a boost. I played with it but that was a long time ago. This what I get with 2.6-test3 kernel, AMD SMP and a WD drive. Timing buffered disk reads: 114 MB in 3.04 seconds = 37.54 MB/sec I use to get figures around the same as you with 2.4. I get this in the same machine using a Promise IDE raid controller. Timing buffered disk reads: 138 MB in 3.03 seconds = 45.52 MB/sec and as I raid 0 array (kernel raid 0) /dev/md0: Timing buffer-cache reads: 1036 MB in 2.00 seconds = 516.79 MB/sec Timing buffered disk reads: 190 MB in 3.01 seconds = 63.17 MB/sec On my other machine with an nforce2 MB and seagate drive with a 2.4 kernel (gs-sources) media root # hdparm -Tt /dev/hda
/dev/hda: Timing buffer-cache reads: 1456 MB in 2.00 seconds = 728.00 MB/sec Timing buffered disk reads: 144 MB in 3.04 seconds = 47.37 MB/sec So MB/IDE Host controller and kernel all affect the results, probabley more that actual recent HD type. tony -- Contract ASIC and FPGA design. Telephone +46 702 894 667 http://pgp.mit.edu:11371/pks/lookup?op=vindex&search=0x633E2623 -- [EMAIL PROTECTED] mailing list
