Re: [PATCH]O18.1int

[Måns Rullgård]

Alex Riesen <alexander.riesen@xxxxxxxxxxxx> writes:

>> >> XEmacs still spins after running a background job like make or grep.
>> >> It's fine if I reverse patch-O16.2-O16.3. The spinning doesn't happen
>> >> as often, or as long time as with O16.3, but it's there and it's
>> >> irritating.
>> >
>> > another example is RXVT (an X terminal emulator). Starts spinnig after
>> > it's child has exited. Not always, but annoyingly often. System is
>> > almost locked while it spins (calling select).
>> 
>> It sounds like the same bug.  IMHO, it's rather bad, since a
>> non-privileged process can make the system unusable for a non-zero
>> amount of time.
>
> the source of RXVT looks more like the bug: it does not check for
> errors, even though it is a bit tricky to get portably.

A program should never be able to grab more than it's share of the CPU
time, no matter how buggy it is.

>> How should I do to capture some information about this thing?
>
> Use "top" and look at the dynamic priority.

I'll try, but it could be tricky, since it doesn't usually last very
long.

-- 
Måns Rullgård
mru@xxxxxxxxxxxx

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