Hi Alan!
On Mit, 24 Mai 2006, Alan Stern wrote:
> > > It's not expected but it's also not uncommon. Although 25 times in 5.4
> > > GB
> > > (how many minutes was that?) sounds like a lot.
> >
> > at least 26min, the first reset was at 18:11 (syslog), the last at
> > 18:37. Is this a normal time? I had the feeling that the resets took
> > quite some time. The times between reset vary between 30sec and 3min.
>
> That's more than it should be. It indicates a systematic problem of some
> sort. If you have a different Linux computer handy, you could try moving
> the cable and drive over to it and see what the reset rate is.
I changed computer *AND* cable and got an even worse result:
$ grep "reset high speed" syslog | awk '{print$3}'
11:45:26
11:46:00
11:48:55
11:49:46
11:52:29
11:53:01
11:53:32
11:54:15
11:55:15
11:55:50
12:02:12
12:04:39
12:05:38
12:06:09
12:07:17
12:09:05
12:09:35
12:11:18
12:15:13
12:17:02
12:17:33
12:20:14
12:23:22
12:25:16
12:30:19
12:35:21
12:37:56
(and I checked that it was all from the same instance of copying, not
from an older one). It seems that the reset takes *realy* really long,
not as fast as it should be.
This was for copying the same 5.4Gb back onto a different hard disk.
This other computer is running Debian/unstable with 2.6.16-1-k7 (so no
-mm kernel).
> Each individual reset should be very quick, on the order of 1 second or
> less. Of course, it may take a few seconds for a command to timeout and
> cause the reset to occur.
Nup, here it sometimes takes 1min to get it going again.
Best wishes
Norbert
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Dr. Norbert Preining <preining AT logic DOT at> Università di Siena
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