linux-ide.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* BUG?: VIA IDE transfer-rate problem
@ 2006-01-13 18:09 Helmut Toplitzer
  2006-01-13 18:10 ` Helmut Toplitzer
  2006-01-17 13:17 ` Bartlomiej Zolnierkiewicz
  0 siblings, 2 replies; 24+ messages in thread
From: Helmut Toplitzer @ 2006-01-13 18:09 UTC (permalink / raw)
  To: linux-ide


Hi!

I've got a question about a small experiment I made:
I tried to find out the transfer-rate of my hd by useing
hdparm -t /dev/hda
and got changing transferrates starting from

37MB/s with CPU not utilized
55MB/s with CPU 100% utilized
22MB/s with ehci-hcd loaded and a device already initilized
55MB/s with ehci-hcd loaded and CPU 100% utilized
(see log1/log2)

So is this supposed normal operation? Or is there
something wrong with it?
Even tried useing the lirc_dev and lirc_i2c kernel-modules
from the lirc project (Infrared remote over usb) and got
only 12MB/s on hda until using CPU with 100%.

So it looks like CPU/USB/IDE is in some interaction. Any
ideas what to do against this. My current kernel is
2.6.15

TIA
Helmut

-- 
My GNUpg fingerprint http://www.gnupg.org
4563 F4FB 0B7E 8698 53CD  00E9 E319 35BD 6A91 1656

^ permalink raw reply	[flat|nested] 24+ messages in thread

end of thread, other threads:[~2006-01-22 17:14 UTC | newest]

Thread overview: 24+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-01-13 18:09 BUG?: VIA IDE transfer-rate problem Helmut Toplitzer
2006-01-13 18:10 ` Helmut Toplitzer
2006-01-16 17:49   ` Helmut Toplitzer
2006-01-17  9:55     ` Gentoopower
2006-01-17 10:22       ` Helmut Toplitzer
2006-01-17 13:17 ` Bartlomiej Zolnierkiewicz
2006-01-17 14:19   ` [linux-usb-devel] " Rene Herman
2006-01-17 16:03   ` Helmut Toplitzer
2006-01-18 10:27     ` Bartlomiej Zolnierkiewicz
2006-01-18 14:36       ` Helmut Toplitzer
2006-01-18 15:54         ` [linux-usb-devel] " David Brownell
2006-01-18 16:13         ` Bartlomiej Zolnierkiewicz
2006-01-18 23:41           ` Helmut Toplitzer
2006-01-19  1:05             ` [linux-usb-devel] " Alan Cox
2006-01-19  7:21           ` Helmut Toplitzer
2006-01-19 11:51             ` Erik Slagter
2006-01-19 12:19             ` Bartlomiej Zolnierkiewicz
2006-01-19 13:31               ` Helmut Toplitzer
2006-01-19 19:59                 ` Helmut Toplitzer
2006-01-19 21:29                   ` [linux-usb-devel] " Alan Stern
2006-01-20 11:27                     ` Helmut Toplitzer
2006-01-20 15:11                       ` Rene Herman
2006-01-20 15:44                         ` Helmut Toplitzer
2006-01-22 17:16                           ` Rene Herman

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).