Alan Stern wrote:
> On Tue, 25 Apr 2006, Christian Haul wrote:
>> This block repeats for every 2 seconds..... and top shows around CPU 40% hi
>
> I have trouble believing that a few milliseconds of activity occurring
> once every two seconds is enough to push your CPU usage to 40%.
Well.... I've taken this after I have stopped hald for some ten minutes
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2989 root 10 -5 0 0 0 S 0.0 0.0 3:57.77 usb-storage
You see, the system spent 3:57.77 minutes in the usb-storage module, and
that with an uptime of 1:35 hrs.
# uptime
20:05:26 up 1:35, 4 users, load average: 1.69, 2.18, 2.23
idle system with hald running (for about 30 secs):
top - 20:12:28 up 1:42, 5 users, load average: 2.67, 1.90, 2.00
Tasks: 160 total, 2 running, 157 sleeping, 1 stopped, 0 zombie
Cpu(s): 9.6% us, 7.0% sy, 0.0% ni, 54.5% id, 5.3% wa, 22.9% hi, 0.7% si
Mem: 1037080k total, 1027028k used, 10052k free, 335928k buffers
Swap: 1245932k total, 12k used, 1245920k free, 128192k cached
>
>> This is what I got from [EMAIL PROTECTED] :
>>
>>> We need to poll otherwise we can't do media detection. The kernel driver
>>> needs to be fixed, suggest to write mail to one of the kernel lists
>>> detailing the problem.
>
> They're right about the polling, but they're wrong about the kernel driver
> needing to be fixed. In fact nothing needs to be fixed as far as I can
> see, except possibly the statistics you get from top. Have you tried
> experimenting with a real load present, such as running a benchmark
> program? Try to find out how much hald and usb-storage really do slow
> down performance.
Actually, this was where it all started. I experienced a load > 10 when
only browsing the web and the machine was more than sluggish. OK, this
is only an XP 1800+ with 1GB RAM, still, for web browsing a load of 10
is incredible.
After removing usb-storage / stopping hald everything is nice and
smooth. Except for removable media auto-detection :-(
Yes, I really do think something is broken here.
TIA,
Chris.
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