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Re: System getting stuck by GCC invocation

From: Richard Braun
Subject: Re: System getting stuck by GCC invocation
Date: Thu, 25 Sep 2014 09:51:25 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Thu, Sep 25, 2014 at 08:13:57AM +0200, Thomas Schwinge wrote:
> This testing was done in a QEMU/KVM Hurd system, configured with 1536 GiB
> of RAM.  Some time after beginning to execute the jc1 command, the system
> stops responding, but still consumes 100 % host CPU time.  And, if QEMU's
> built-in gdbserver is to be believed, it is still doing "something":

You can also use the in-kernel debugger for more information, in
particular show all threads, to see if it's a thread storm caused by
too many concurrent page cache writebacks. This is the main issue I
have when building "large" files (see [1]).

Richard Braun

[1] https://www.sceen.net/iceweasel-31-on-debian-gnuhurd/

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