On Thu, Aug 15, 2019 at 1:51 AM Artem Tim <ego.cordatus(a)gmail.com> wrote:
BFQ scheduler help a lot with this issue. Using it on Fedora since 4.19 kernel. Also
there was previous discussion about make it default for Workstation
https://lists.fedoraproject.org/archives/list/kernel@lists.fedoraproject....
It's mentioned in the workstation issue as having no effect in this case.
https://pagure.io/fedora-workstation/issue/98
I just switched to it and repeating the test case and the GUI still
hangs, is unresponsive, even without substantial pressure on the SSD,
and swap isn't even 1/2 used.
https://drive.google.com/open?id=13_5XIBMu01HfOdzGVH-4qTgd-PLpFsaN
But I am getting something new in kernel messages:
542 sysrq+t during a GUI freeze that lasted over 1 minute, and then:
[ 718.068633] fmac.local kernel: SLUB: Unable to allocate memory on
node -1, gfp=0x900(GFP_NOWAIT|__GFP_ZERO)
[ 718.068636] fmac.local kernel: cache: page->ptl, object size: 72,
buffer size: 72, default order: 0, min order: 0
[ 718.068639] fmac.local kernel: node 0: slabs: 296, objs: 16576, free: 0
[ 718.068704] fmac.local kernel: chronyd: page allocation failure:
order:0, mode:0x800(GFP_NOWAIT),
nodemask=(null),cpuset=/,mems_allowed=0
Not sure what to make of that. Complete 'journalctl -k' is here:
https://drive.google.com/open?id=1Z1jAjMrmdXAxuSELdFfd4IKdceeufmVu
--
Chris Murphy