[Qt-creator] Polling and running in circles
Andre Poenitz
andre.poenitz at mathematik.tu-chemnitz.de
Thu Mar 19 19:08:50 CET 2009
On Thu, Mar 19, 2009 at 11:16:12AM -0500, Adam Majer wrote:
> This is an strace of qt creator in Debian. I don't know what it is
> trying to do, but it is using about 2% of CPU doing it.
>
> /etc/localtime, as far as I know, is a copy of the timezone data. It
> should not change often, so why continued requests on it?
>
> But more importantly, the other read() requests and poll is looping
> rather fast. Any ideas where this is coming from?
>
>
> poll([{fd=3, events=POLLIN}, {fd=11, events=POLLIN|POLLPRI}, {fd=13,
> events=POLLIN|POLLPRI}, {fd=14, events=POLLIN|POLLPRI}, {fd=15,
> events=POLLIN|POLLPRI}, {fd=16, events=POLLIN}, {fd=17, events=POLLIN},
> {fd=7, events=POLLIN}, {fd=19, events=POLLIN}], 9, 0) = 0 (Timeout)
>
> read(7, 0x2538624, 4096) = -1 EAGAIN (Resource
> temporarily unavailable)
>
> stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2865, ...}) = 0
>
> read(7, 0x2538624, 4096) = -1 EAGAIN (Resource
> temporarily unavailable)
>
> read(16, 0x25e7374, 4096) = -1 EAGAIN (Resource
> temporarily unavailable)
Cursor blinking?
Andre'
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