Freebsd 11.0 - system freeze on intensive I/O

[Gautam]

Hi,

On Wed, Aug 9, 2017 at 10:23 PM, Gautam <list at execve.net> wrote:

> Hi,
>
> I just want to comment, that when I tested it there
> was absolutely no need for any swap usage. I tried the test on a laptop
> with 8GB RAM and
> did it from the console mode. But it does seem that there might be some
> request (read/write) to swap which
> ​causes a lock up to the system.​
>
> ​One update on this one. I installed a custom stable/11 kernel and world
(sched = 4BSD was the only change), and the problem
is no longer seen. From my untrained eyes, it looks like some kind of swap
request starvation causing a hang when ULE is in use.​


​Thanks,
Gautam
​