This is the mail archive of the
cygwin
mailing list for the Cygwin project.
Re: Please try a snapshot - final push for 1.5.19
On Wed, 21 Dec 2005, Christopher Faylor wrote:
> On Wed, Dec 21, 2005 at 12:17:09PM -0500, Igor Pechtchanski wrote:
> >I've been having problems with "fork: resource unavailable" on my machine
> >with the 10/03 snapshot.[snip]
> >
> >I'm at a loss on how to proceed.[snip]
> >[snip]
> >
> >Any pointers/advice would be appreciated.
>
> Below is the contents from "how-to-debug-cygwin.txt". This file is
> found in the cygwin source directory.
> [snip]
A simple "you'd have to debug this yourself" would have sufficed, thank
you. And I knew I would need to do this. However, this kind of problem
is not covered in how-to-debug-cygwin.txt, for two reasons: a) it is not a
crash, and thus the JIT debugging instructions are useless, and b) it was
not reproducible under gdb, unfortunately -- only under strace.
I was hoping that the particular pattern in the strace would jump out at
someone familiar with the code. I guess this is not the case, so I'll try
to get more understanding of the code and see if I can figure out the
problem myself. At first glance, this looks like a PID reuse problem --
the PID is reused before the old pinfo structure could be released, and
with the high load, 20 loop iterations aren't enough to wait it out. I
suspect that upping the NPIDS_HELD to 8 would at least work around the
problem -- would a patch like this be accepted if I could show that this
is the reason for the failure?
I'll post back when (and if) I have more info.
Igor
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_ pechtcha@cs.nyu.edu
ZZZzz /,`.-'`' -. ;-;;,_ igor@watson.ibm.com
|,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski, Ph.D.
'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
"Las! je suis sot... -Mais non, tu ne l'es pas, puisque tu t'en rends compte."
"But no -- you are no fool; you call yourself a fool, there's proof enough in
that!" -- Rostand, "Cyrano de Bergerac"
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/