RE: [gentoo-user] emerge -u fails with "OSError: [Errno 12] Cannot allocate memory"

[Sean O'Myers]

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From: J. Roeleveld<mailto:joost@××××××××.org>
Sent: Tuesday, June 16, 2020 3:36 PM
To: gentoo-user@l.g.o<mailto:gentoo-user@l.g.o>
Subject: Re: [gentoo-user] emerge -u fails with "OSError: [Errno 12] Cannot allocate memory"

On 16 June 2020 20:31:56 CEST, n952162 <n952162@×××.de> wrote:
>Admonished to get everything updated, I turned to my raspberry pi with
>Sakaki's binary image.  Synced and updated portage with no problem.
>Then I did an emerge -u @world and got (after *hours* of dependency
>checking):
>
> >>> Jobs: 0 of 206 complete, 1 running Load avg: 2.84, 3.44, 3.85
> >>> Emerging binary (1 of 206) sys-libs/glibc-2.31-r5::gentoo
> >>> Jobs: 0 of 206 complete, 1 running Load avg: 2.84, 3.44, 3.85
> >>> Jobs: 0 of 206 complete Load avg: 3.60, 3.54, 3.87
> >>> Installing (1 of 206) sys-libs/glibc-2.31-r5::gentoo
> >>> Jobs: 0 of 206 complete Load avg: 3.60, 3.54, 3.87
>Exception in callback AsynchronousTask._exit_listener_cb(<bound
>method...0x7f9180d9d8>>)
>handle: <Handle AsynchronousTask._exit_listener_cb(<bound
>method...0x7f9180d9d8>>)>
>Traceback (most recent call last):
>   File "/usr/lib64/python3.6/asyncio/events.py", line 145, in _run
>     self._callback(*self._args)
>   File
>"/usr/lib64/python3.6/site-packages/_emerge/AsynchronousTask.py", line
>201, in _exit_listener_cb
>     listener(self)
>   File
>"/usr/lib64/python3.6/site-packages/_emerge/BinpkgPrefetcher.py", line
>31, in _fetcher_exit
>     self._start_task(verifier, self._verifier_exit)
>   File "/usr/lib64/python3.6/site-packages/_emerge/CompositeTask.py",
>line 113, in _start_task
>     task.start()
>   File
>"/usr/lib64/python3.6/site-packages/_emerge/AsynchronousTask.py", line
>30, in start
>     self._start()
>   File "/usr/lib64/python3.6/site-packages/_emerge/BinpkgVerifier.py",
>line 59, in _start
>     self._digester_exit)
>   File "/usr/lib64/python3.6/site-packages/_emerge/CompositeTask.py",
>line 113, in _start_task
>     task.start()
>   File
>"/usr/lib64/python3.6/site-packages/_emerge/AsynchronousTask.py", line
>30, in start
>     self._start()
>   File
>"/usr/lib64/python3.6/site-packages/portage/util/_async/FileDigester.py",
>line 30, in _start
>     ForkProcess._start(self)
>   File "/usr/lib64/python3.6/site-packages/_emerge/SpawnProcess.py",
>line 112, in _start
>     retval = self._spawn(self.args, **kwargs)
>   File
>"/usr/lib64/python3.6/site-packages/portage/util/_async/ForkProcess.py",
>line 24, in _spawn
>     pid = os.fork()
>   File "/usr/lib64/python3.6/site-packages/portage/__init__.py", line
>246, in __call__
>     rval = self._func(*wrapped_args, **wrapped_kwargs)
>OSError: [Errno 12] Cannot allocate memory
>
>What's the recommended course of action here?
>
>Log attached.

Suggestion:
1) ensure you only have 1 job running and absolutely no parallel builds. "--jobs 1" for both emerge and make

2) get SWAP, preferably on USB stick/harddrive so as not to kill the SD card.

Because rasppis are low on memory and they have very specific uses, I tend not to bother with Gentoo on them.

--
Joost
--
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