Re: [gentoo-user] qtwebkit problem (solved)

[Jack]

On 1/5/20 5:01 AM, Philip Webb wrote:
> In order to update to the latest stable PyQt5-5.13.2 ,
> I was required to remerge qtwebkit-5.212.0_pre20190629 ;
> this normally takes  30 min  & can make its cache in memory.
>
> Towards the end of the latter compile, I suddenly found myself
> looking at a completely dark screen : the whole system had crashed.
> I pressed the Start button on the box & tried the emerge again,
> watching what was going on during the compile,
> while monitoring 'free' on another tab & activity on Gkrellm.
> Early in the compile, it briefly used most of swap :
> I have  8 GB  memory +  8 GB  swap partition
> & it was using  c 4,5 GB  swap ; this dropped again fairly quickly.
> All  8  processors were running at  100 %  or nearly
> & the CPU temperature was  70 C  with fans whining a bit.
> Then at the same point in the compile, poof ! -- another hard crash.
>
> Nothing at all in 'syslog' ; 'kern.log' shows :
>
>    Jan 4 13:23:56 localhost kernel: IPv6: ADDRCONF(NETDEV_CHANGE): enp2s0: link becomes ready
>    Jan 4 14:09:33 localhost kernel: Kernel logging (proc) stopped.
>    Jan 4 14:09:33 localhost kernel: Kernel log daemon terminating.
> < this wb the crash, then restart >
>    Jan 4 14:09:55 localhost kernel: klogd 1.5.1, log source = /proc/kmsg started.
>    Jan 4 14:09:55 localhost kernel: Inspecting /usr/src/linux/System.map
>    Jan 4 14:09:55 localhost kernel: Cannot find map file.
>    Jan 4 14:09:55 localhost kernel: Loaded 30475 symbols from 1 module.
>    Jan 4 14:09:55 localhost kernel: Linux version 4.14.52-gentoo (root@localhost) (gcc version 7.3.0 (Gentoo 7.3.0-r3 p1.4)) #5 SMP Sun Aug 19 23:59:47 EDT 201
>
> which isn't very helpful.  What evidence there was suggested
> that it had run out of swap, causing the kernel to panic,
> so I added 'dev-qt/qtwebkit notmpfs.conf' to  /etc/portage/package.env ,
> tried the emerge again & it went thro' successfully in  29 min .
>
> If you try to emerge LO or FF using a tmpfs , Portage tells you not to.
> Rust is the 4th entry in  package.env :
> I forget whether Portage/other warned me or I found out the hard way.
>
> It's also a puzzle why qtwebkit failed on this re-merge
> after compiling successfully when previously updated a few months ago.
>
> It's a very long time since my system (on any box) crashed in this manner.
>
> This is FYI, but others might have a few comments.

There have been other good comments, but I'd ask what are your --jobs 
and --load-average settings?  Does it crash using -j1?  I realize this 
may be moot, since you have already completed the emerge and may not 
want to risk another crash, but it's a thought.

Jack