[PlanetCCRMA] Re: some weirdnesses on fc6 with reent upgrades

[Martin Harriss]

joakim at verona.se wrote:
> Fernando Lopez-Lezcano <nando at ccrma.Stanford.EDU> writes:
> 
>> On Tue, 2007-03-13 at 20:57 +0100, joakim at verona.se wrote:
>>> I've been using ccrma on my i386 fc6 laptop for some time, and it has worked
>>> mostly well.
>>>
>>> Recently, however, all sorts of weirdness has crept in, I think only
>>> caused by yum upgrades.
>>>
>>> - qjackctl doesnt start. it just hangs before starting the gui.
>>> strace indicates its hanging on reading something.
>> It does not help to not know what it was trying to read :-)
> 
> Sorry about that, I was unable to figure it out.
> 
> basically the trace loops at the end like this:
> 
> select(10, [3 4 5 7 9], [], [], {0, 199890}) = 0 (Timeout)
> gettimeofday({1173870449, 572305}, NULL) = 0
> ioctl(3, FIONREAD, [0])                 = 0
> gettimeofday({1173870449, 572389}, NULL) = 0
> select(10, [3 4 5 7 9], [], [], {0, 0}) = 0 (Timeout)
> gettimeofday({1173870449, 572569}, NULL) = 0
> gettimeofday({1173870449, 572705}, NULL) = 0
> gettimeofday({1173870449, 572753}, NULL) = 0
> ioctl(3, FIONREAD, [0])                 = 0
> 
> ...

You can find out what these file descriptors represent by doing

"lsof -p <pid>"

while the process is running.

Martin