12.0-RELEASE-p4 i386/PAE kernel spins

[Yoshihiro Ota]

Hi,

I'm attaching to this thread as I think my problem started happening after the SA updates.

I saw 3 suspicious spins with i386/PAE kernel since I updated on May 15th/16th.

I boot FreeBSD 12.0-RELEASES i386/PAE once per a day and shutdown each time and use BSD everyday.  I start with console and decide whether I want to use X or not and if so, I run startx.

In the past, startx didn't come up twice in 30 seconds or so and console wasn't responding.  Both times, I wasn't able to monitor system and gave up - hard reset.

I had another and similar symptom.  This time, I had ran X for a while.  I started moving about 2 of 100MB files from tmpfs to zfs, I started seeing system lagging and also high CPU usage by kernel and syncer by top.  Ctrl-T on mv printed "runnable" and "running" a lot while "systat -vm" wasn't showing any IO activities.  After a minute or longer, system came back to normal.

I haven't run non-PAE kernel as much, once or twice since the SA.  I don't know if this issue is PAE kernel only.  I definitely hadn't seen before the SA.

Hiro

On Wed, 15 May 2019 00:35:07 -0400
Ed Maste <emaste at freebsd.org> wrote:

> On Wed, 15 May 2019 at 00:03, Ed Maste <emaste at freebsd.org> wrote:
> >
> > On Wed, 15 May 2019 at 15:09, wintellect Auser <justausern00b at gmail.com> wrote:
> > >
> > > Hi all,
> > >
> > > Wanted to make you aware of an issue I have encountered, sorry if this is
> > > the wrong list.
> >
> > This is the right place and thank you for reporting. Looking into it.
> 
> It looks like a new update for 12.0 i386 will be needed and will be
> rolled out as soon as possible.
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