On September 18, 2004 1:57 am, Ben Brown wrote: > Might want to turn on 32-bit I/O support. That would speed things up: > > /sbin/hdparm -c 1 /dev/hda I tried that previously. In fact, I tried everything. No option produces any significant change. /dev/hda: Timing buffer-cache reads: 564 MB in 2.00 seconds = 281.34 MB/sec Timing buffered disk reads: 42 MB in 3.09 seconds = 13.58 MB/sec [root@localhost trevor]# hdparm /dev/hda /dev/hda: multcount = 16 (on) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 16383/255/63, sectors = 78140160, start = 0 [root@localhost trevor]# hdparm -c 1 /dev/hda /dev/hda: setting 32-bit IO_support flag to 1 IO_support = 1 (32-bit) [root@localhost trevor]# hdparm /dev/hda /dev/hda: multcount = 16 (on) IO_support = 1 (32-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 16383/255/63, sectors = 78140160, start = 0 [root@localhost trevor]# hdparm -tT /dev/hda /dev/hda: Timing buffer-cache reads: 572 MB in 2.00 seconds = 285.76 MB/sec Timing buffered disk reads: 42 MB in 3.02 seconds = 13.89 MB/sec -- Trevor Smith // trevor@xxxxxxxxxxxxxx
