On 22 Jan, this message from [EMAIL PROTECTED] echoed through cyberspace: >> - check your hard disk speed: hdparm -tT /dev/<disk with kernel source> >> (is non-destructive; post the result to compare) > > 1. Timing buffer-cache reads: 128 MB in 3.73 seconds = 34.32 MB/sec > Timing buffered disk reads: 64 MB in 18.10 seconds = 3.54 MB/sec > > 2. /dev/sda: > Timing buffer-cache reads: 128 MB in 3.68 seconds = 34.78 MB/sec > Timing buffered disk reads: 64 MB in 12.71 seconds = 5.04 MB/sec
34 MB/sec for buffered reads s essentially a measure of memory bandwidth. And 34 MB/sec seems low for a 7500-class machine. I get 45 MB/sec (OK, on an interleaved memory config). 3.54 MB/sec for disk is low; 5.04 is about acceptable for an older SCSI disk. Unfortunately Apple fitted those systems with _horrible_ disks (like the Quantum Fireball TM's). On my IDE disk in the 7600, connected to a Promise IDE controller, I get 12 MB/sec. That _does_ help a lot for kernel compiles. Cheers Michel ------------------------------------------------------------------------- Michel Lanners | " Read Philosophy. Study Art. 23, Rue Paul Henkes | Ask Questions. Make Mistakes. L-1710 Luxembourg | email [EMAIL PROTECTED] | http://www.cpu.lu/~mlan | Learn Always. "
