Kernel memory leak with x11/nvidia-driver

[Kostya Berger]

Here are the results of the test you've suggested on my system (r293722), nvidia-driver-304-304.128 -- two runs with the break of 40 minutes:
active    inactive    wire    cache    free    total
85441    282221    280649    0    100455    748766
85488    282235    280655    0    100391    748769
85500    282240    280657    0    100372    748769
83226    283338    280692    0    101513    748769
82816    282439    280687    0    102827    748769
[14:01 - 1.52]
[kostya at notebook2 9] ~ $ >sudo sh test.sh

active    inactive    wire    cache    free    total
82280    302769    304025    0    58081    747155
82273    302783    304021    0    58081    747158
82247    302809    304021    0    58081    747158
82239    302816    304009    0    58094    747158
82076    302995    304010    0    58077    747158
82080    303002    304010    0    58066    747158
[15:44 - 1.52]

Hope this helps and you can see some tendency you're after. With kindest regards,
Kostya Berger
 
 

    On Thursday, 4 February 2016, 3:56, Ultima <ultima1252 at gmail.com> wrote:
 

 Just tested your script, there is definitely a memory leak.

 I also ran into really weird behavior. Running your script
in tmux after starting and stopping an xorg session a few,
tmux completely froze in the session. Creating a new
window in the session was also completely frozen,
however this is only visually as commands still worked,
just showed a blank black screen.

Also unloading the kernel modules for
nvidia and nvidia-modeset (new as of 358.16ish) did
not free the memory.

On Wed, Feb 3, 2016 at 8:24 PM, Ultima <ultima1252 at gmail.com> wrote:

>  Apologies, this should have been in my initial reply.
>
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201340
> or here for attachment
> https://bz-attachments.freebsd.org/attachment.cgi?id=165694
>
> I haven't actually had a chance to do anything after upgrading
> from stable other than see the corrupted console for myself.
> Lack of time =/
>
> On Wed, Feb 3, 2016 at 2:41 PM, Eric van Gyzen <vangyzen at freebsd.org>
> wrote:
>
>> On 02/03/2016 10:54, Eric van Gyzen wrote:
>> > I just set up a new desktop running head with x11/nvidia-driver.  I've
>> > discovered a memory leak where pages disappear from the queues, never to
>> > return.  Specifically, the total of
>> >    v_active_count
>> >    v_inactive_count
>> >    v_wire_count
>> >    v_cache_count
>> >    v_free_count
>> > drops, eventually becoming /much/ less than v_page_count.
>>
>> Here is a script to log the data:
>>
>> #!/bin/sh
>>
>> readonly QUEUES="active inactive wire cache free total"
>> readonly FORMAT="%s\t%s\t%s\t%s\t%s\t%s\n"
>>
>> vm_page_counts() {
>>    for queue in $QUEUES; do
>>        if [ "$queue" != "total" ]; then
>>            sysctl -n vm.stats.vm.v_${queue}_count
>>        fi
>>    done
>> }
>>
>> sum() {
>>    s=0
>>    while [ $# -gt 0 ]; do
>>        s=$((s + $1))
>>        shift
>>    done
>>    echo $s
>> }
>>
>> print_counts() {
>>    counts="`vm_page_counts`"
>>    printf "$FORMAT" $counts `sum $counts`
>> }
>>
>> printf "$FORMAT" $QUEUES
>> print_counts
>> while sleep 60; do
>>    print_counts
>> done
>>
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>
>
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