Date: Thu, 17 Mar 2011 22:10:31 +0000 From: Alexander Best <arundel@freebsd.org> To: Attilio Rao <attilio@freebsd.org> Cc: freebsd-usb@freebsd.org Subject: Re: Problem with mouse during high CPU load Message-ID: <20110317221031.GA11751@freebsd.org> In-Reply-To: <AANLkTikbqLPJ73f6=LW9n7545HsQ1DqyLQNUzF9%2BsxPn@mail.gmail.com> References: <20110121182340.GA80488@freebsd.org> <AANLkTikbqLPJ73f6=LW9n7545HsQ1DqyLQNUzF9%2BsxPn@mail.gmail.com>
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On Fri Jan 21 11, Attilio Rao wrote:
> 2011/1/21 Alexander Best <arundel@freebsd.org>:
> > hi there,
> >
> > i've reported this issue quite a while ago [1], but back then nobody was able
> > to help me. i have an issue with my usb mouse. when there's a high CPU load it
> > produces random mouse clicks. this doesn't happen on other OSes. i've attached
> > a different usb mouse to my freebsd box and i could't observe the same
> > behavior. so it seems this problem is only related to specific mice.
>
> I can experience the same problem.
i've captured the iostat ouput during the random mouse clicks:
tty ada0 ada1 cd0 cpu
tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id
36 227 31.97 2 0.05 31.47 16 0.50 59.61 0 0.02 9 0 3 0 88
7 232 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 5 0 2 1 92
9 82 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 4 0 3 0 94
6 77 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 6 0 3 1 91
16 676 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 6 0 4 0 89
8 77 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 7 0 2 1 90
2 78 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 16 0 3 0 80
4 77 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 6 0 2 1 91
121 78 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 3 0 1 0 96
290 77 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 4 0 3 1 92
998 78 0.00 0 0.00 32.00 1 0.03 0.00 0 0.00 6 0 5 0 89
3231 30024 7.20 5 0.03 13.23 1583 20.45 0.00 0 0.00 25 0 28 3 44
2437 18319 4.00 2 0.01 13.04 916 11.66 0.00 0 0.00 16 0 17 0 67
1291 8441 0.00 0 0.00 13.08 1085 13.86 0.00 0 0.00 15 0 14 3 68
737 243 0.00 0 0.00 13.13 359 4.61 0.00 0 0.00 7 0 4 0 88
396 77 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 7 0 5 1 87
124 78 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 5 0 1 0 94
8 77 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 7 0 3 1 89
12 169 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 8 0 2 0 89
8 77 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 7 0 2 1 91
4 78 16.00 6 0.09 0.00 0 0.00 0.00 0 0.00 4 0 2 0 94
24 77 36.00 16 0.56 24.34 35 0.82 0.00 0 0.00 16 0 6 1 77
8 77 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 4 0 3 0 92
8 77 0.00 0 0.00 14.62 16 0.23 0.00 0 0.00 7 0 2 0 91
4 77 0.00 0 0.00 18.24 17 0.30 0.00 0 0.00 5 0 5 0 90
6 77 0.00 0 0.00 32.00 2 0.06 0.00 0 0.00 16 0 3 1 81
6 77 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 7 0 2 0 91
0 77 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 4 0 2 1 93
5 77 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 4 0 4 0 91
1 77 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 3 0 0 1 96
0 77 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 2 0 1 0 97
...in fact if i move the mouse fast enough i'm able to reproduce the issue
without any high CPU activity.
the following iostat output was taken during high CPU load. now also slow mouse
movements can cause random mouse events (i.e. clicks) to happen:
tty ada0 ada1 cd0 cpu
tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id
36 230 31.80 2 0.05 31.39 16 0.49 59.61 0 0.02 9 0 3 0 88
1 233 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 96 0 4 0 0
467 78 0.00 0 0.00 128.00 4 0.50 0.00 0 0.00 96 0 3 1 0
451 78 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 96 0 4 0 0
325 83 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 93 0 6 1 0
7 86 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 97 0 3 0 0
21 684 4.00 1 0.00 0.00 0 0.00 0.00 0 0.00 95 0 4 1 0
540 625 0.00 0 0.00 13.60 98 1.30 0.00 0 0.00 95 0 5 0 0
676 1222 0.00 0 0.00 13.43 307 4.03 0.00 0 0.00 91 0 7 2 0
411 76 0.00 0 0.00 14.48 312 4.42 0.00 0 0.00 95 0 5 0 0
388 77 0.00 0 0.00 128.00 4 0.50 0.00 0 0.00 94 0 5 1 0
206 78 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 98 0 2 0 0
17 77 0.00 0 0.00 128.00 1 0.12 0.00 0 0.00 97 0 3 0 0
0 78 0.00 0 0.00 16.00 32 0.49 0.00 0 0.00 98 0 2 0 0
i'm still under the impression this is a scheduler problem, but who knows...
cheers.
alex
>
> Attilio
>
>
> --
> Peace can only be achieved by understanding - A. Einstein
--
a13x
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