Bad memory/swap management in 17.10?

[Paul Lemmons]

I run a similar setup. I had to reduce my VM to be 2G to help. It was the
only process I really had control over. Firefox will bloat over time as
well. Thunderbird appears to be fairly stable. Swapping is bad no matter
whether it does it well or not. So, were I you I would see how small I
could make my VM and still have it functional. I would also look at
enabling the BFQ disk I/O scheduler on the 4.13 kernel (Default kernel on
17.10). It is built into the kernel but not turned on by default. That may
help with the kernel catatonia when swapping.

On Thu, Nov 9, 2017 at 12:51 PM Luca Olivetti <luca at ventoso.org> wrote:

> Under memory pressure the machine becomes totally unresponsive (with the
> hard disk light constantly lit up due to heavy swapping, I suppose),
> until I reset it (once I waited up to an hour to see if it recovered
> with no luck).
> It happens often enough that it's becoming annoying.
>
> Before the upgrade to 17.10, the same workload (see below) didn't cause
> the lock-up: the machine would be unresponsive for a short while (a few
> seconds) but then it recovered and was usable again.
>
> Details:
> I have 8GB of memory, one virtualbox virtual machine with 3.5GB
> assigned, firefox, thunderbird and the plasma desktop (oh, and konsole
> with several tabs).
> The lockup happens after a few hours when I try to open a document with
> openoffice or a pdf with okular (after a restart I can open those same
> documents with no problem).
>
> Since the whole system has been upgraded I cannot say if the problem is
> the kernel, virtualbox, firefox, thunderbird or any other component.
> I cannot find anything in syslog, so I cannot say if the OOM is trying
> to do its job or not.
>
> I can reset the machine ( a dell latitude e6530) either with the power
> button or with the sysrq magic key combination.
>
> Am I the only one seeing this?
>
> Bye
> --
> Luca
>
>
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