Date: Tue, 18 Nov 2014 19:51:58 -0700 From: Ian Lepore <ian@FreeBSD.org> To: Dieter BSD <dieterbsd@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Running 8 building 10 gives "Out of file descriptors" ? Message-ID: <1416365518.1147.84.camel@revolution.hippie.lan> In-Reply-To: <CAA3ZYrBJajkeV-wO8CWHo3TODjHDt=qkiCniU%2BT07%2BNjvyid3A@mail.gmail.com> References: <CAA3ZYrBJajkeV-wO8CWHo3TODjHDt=qkiCniU%2BT07%2BNjvyid3A@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, 2014-11-18 at 18:22 -0800, Dieter BSD wrote:
> > I've been building 10.x and 11.x world and kernel from source on an 8.2
> > (and more recently now 8.4) system for a couple years, as recently as
> > last night. I've never needed to do anything special. When I check
> > sysctl kern.maxfiles it's set to 12328, not so different from yours.
> >
> > I wonder if some long-running process on your system is leaking away
> > descriptors? A 'procstat -af' might help find that.
>
> Uptime is less than 3 days. (System hung a couple days ago, shutting off
> the signal to the display. No core dump. No clues as to *why* it hung.
> *grumble* )
>
> >> getdtablesize() returned 11095
>
> kern.maxfiles: 12328
>
> # procstat -af | wc -l
> 1912
>
> I ran
> while true ; do procstat -af | wc -l; sleep 0.03 ; done
> in one window, and
> make kernel-toolchain
> in another window. Never got above 2000. Not absolute proof, but
> it looks like it is not really running out of descriptors.
>
> chmod 0 /usr/bin/mkdep
> gives the expected permission denied. (proves that it is trying to
> run /usr/bin/mkdep)
>
> Restore the mode and change /usr/bin/mkdep to
> #!/bin/sh
> echo hello from mkdep
> and I'm back to "Out of file descriptors". And it doesn't print hello.
>
> So... make (I assume?) thinks (incorrectly?) that it is running out of
> file descriptors attempting to run /usr/bin/mkdep?
Oh. Hrm. The only thing in the source that says that exact message is
in /bin/sh input.c, and it looks like this:
fd2 = fcntl(fd, F_DUPFD_CLOEXEC, 10);
close(fd);
if (fd2 < 0)
error("Out of file descriptors");
So you have guess what the actual error is, or hack the code to print
errno or something.
-- Ian
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1416365518.1147.84.camel>