* IDE performance 2.4.18 slower than MSDOS
@ 2002-04-14 23:20 CJ
0 siblings, 0 replies; only message in thread
From: CJ @ 2002-04-14 23:20 UTC (permalink / raw)
To: Linux Kernel Development
These are for an unmounted Seagate 80GB IDE Primary
ST380021A DMA in a Celeron 466, Intel 815BN, 256MB.
dd 4.0.36 linux-2.4.18--------
MB/s Input Output Hdparm
DOS 42.10 ? -Tt
/dev/hda 36.36 19.94 37.21
/dev/raw 2.86 3.28 98.46
Linux 2.4.18
time dd if=/dev/hda of=/dev/nul
301.6user 1093system 36:41.05elapsed 63%cpu
36.36MB/s
time dd if=/dev/raw/raw80 of=/dev/nul
690.95user 5060.35system 7:31:39elapsed 21%cpu
(IDE light dim)
2.86MB/s
time dd if=/dev/zero of=/dev/raw/raw80
626.32user 7570.34system 6:46:39elapsed 33%cpu
(IDE light dim)
3.28MB/s
time dd if=/dev/zero of=/dev/hda
304.34user 1413system 1:06:54elapsed 42%cpu
(IDE light medium 123456, IDE light off 789)repeats throughtout
19.94MB/s
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2002-04-14 23:20 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2002-04-14 23:20 IDE performance 2.4.18 slower than MSDOS CJ
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.