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Re: Processes randomly get stuck
- From: Ismail Donmez <ismail at i10z dot com>
- To: cygwin at cygwin dot com
- Date: Fri, 21 Aug 2015 08:09:50 +0000 (UTC)
- Subject: Re: Processes randomly get stuck
- Authentication-results: sourceware.org; auth=none
- References: <loom dot 20150726T145318-217 at post dot gmane dot org> <20150727075946 dot GF7535 at calimero dot vinschen dot de>
Hi,
Corinna Vinschen writes:
>
> On Jul 26 12:56, Ismail Donmez wrote:
> > Hi,
> >
> > $ uname -a
> > CYGWIN_NT-10.0 ux31a 2.2.0(0.289/5/3) 2015-07-23 20:41 x86_64 Cygwin
> >
> > For the last week or so ssh/zsh processes are randomly gets into
defunct
> > state, that is
> >
> > $ cat /proc/7232/cmdline
> > <defunct>
> > $ cat /proc/7232/status
> > Name: zsh
> > State: S (sleeping)
> > Tgid: 7232
> > Pid: 7232
> > PPid: 5172
> > Uid: 197609 197609 197609 197609
> > Gid: 197609 197609 197609 197609
> > VmSize: 7556 kB
> > VmLck: 0 kB
> > VmRSS: 10860 kB
> > VmData: 2140 kB
> > VmStk: 0 kB
> > VmExe: 0 kB
> > VmLib: 4644 kB
> > SigPnd: 0000000000000000
> > SigBlk: 0000000000000000
> > SigIgn: 0000000000000000
> >
> > Same happens with ssh, and after some time like 5 minutes or so it
goes
> > back to the normal state. I wonder if anyone has been experiencing
> > something similar?
>
> There's no change in 2.2.0 which might explain this, but still, did
> you try to downgrade to 2.1.0?
I tried to see the patterns of this problem before replying again. Because
the bug randomly appears I can't conclude if 2.1.0 was any better (though
I couldn't reproduce the problem with it.)
I have an idea why this might be happening and want to ask what happens
each time one does read /proc/<pid>/cmdline, does the function
_pinfo::commune_request called everytime, or just once?
This might explain some behaviour I am seeing because tmux is reading that
file every 20 seconds or something like that.
Thanks!
ismail
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