Re: Is KQueue still broken on Darwin?

Gregory Weston <uce@[EMAIL PROTECTED]
> wrote:
# In article <1327i8uinfdkk99@[EMAIL PROTECTED]
>,
#  SM Ryan <wyrmwif@[EMAIL PROTECTED]
> wrote:
# 
# > Gregory Weston <uce@[EMAIL PROTECTED]
> wrote:
# > # In article <13277khfed5tv24@[EMAIL PROTECTED]
>,
# > #  SM Ryan <wyrmwif@[EMAIL PROTECTED]
> wrote:
# > # 
# > # > I have a program that gets in an uninterruptible wait for
# > # > hours and days. I'm using sockets and kqueue. I have never
# > # > had problems with sockets before, but kqueue used to crash
# > # > the kernel. Does anyone know if kqueue still borks the machine?
# > # 
# > # It never has for me. What's the nature and cir***stance of the 
# > # misbehavior you're seeing?
# > 
# > It hangs on customer machines not mine where I cannot examine it
# > too closely (no gdb, etc). It monitors the file system, running
# > kqueue on up to 2000 disk inodes. It has a unix domain socket
# > to another process. When I look at with ps -x the status is Us.
# > If I kill the companion process, one of the threads will abort
# > the entire process on a broken pipe; then the status is Es and
# > it's still hung.
# > 
# > This can persist for days, until someone notices it. The only
# > recovery I know of is a reboot. I do know kqueue panicked 10.3.
# > I wonder if it's still broken or 10.4.9 broke it.
# 
# I've got a few thousand users running a program that's been reliant on 
# kqueue for ... about 2.5 years now. Seems like there's got to me more 
# detail than "kqueue panicked 10.3."

http://www.google.com/search?hl=en&safe=off&client=safari&rls=en&q=kqueue+kernel+panic&btnG=Search

It's well known kqueue was broken on 10.3. I still start whenever
a window fills with grey top to bottom.

# What I'm kind of getting at is that maybe you're not looking at the 
# right culprit.

Problem for me is I really don't know what the culprit is
or how to track it down. Something is putting the process
into uninterruptible wait. Usually that means broken I/O,
but attached disks look fine.

--
SM Ryan http://www.rawbw.com/~wyrmwif/
She broke your heart and inadvertently drove men to deviant lifestyles.