According to both hdparm and 'dd'.
Results, in MB/sec, for hdparm:
buffer cache reads buffered disk reads
2.2.14 multcount=0 36.26 10.58
2.2.14 multcount=8 36.36 10.27
2.3.99pre3 multcount=0 36.99 8.11
2.3.99pre3 multcount=8 36.89 8.86
2.3.99pre3 idebus=66 37.21 8.13
multcount=0
2.3.99pre3 idebus=66 36.78 8.65
multcount=8
More - fishing in my old e-mail I can see that in 2.0.36 I used to
be able to run dd if=/dev/hda of=/dev/null bs=4096 count=16384 in
0.04user 1.90system 0:06.42elapsed 30%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (81major+11minor)pagefaults 0swaps
while 2.3.99-pre3 idebus=66 multcount=8 only gets to
0.02user 2.34system 0:08.91elapsed 26%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (105major+13minor)pagefaults 0swaps
It seems we're far slower than we used to be... this is a Quantum
Fireball SE4.3A, QDI Titanium IB board, TX430 chipset @66Mhz,
AMD K6-200 with 64MB 10ns SDRAM.
Thanks for any input,
--alessandro <asuardi@uninetcom.it> <asuardi@it.oracle.com>
Linux 2.2.14/2.3.99-pre3 glibc-2.1.2-11 gcc-2.95.2 binutils-2.9.5.0.31
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This archive was generated by hypermail 2b29 : Fri Mar 31 2000 - 21:00:17 EST