On 1/17/2011 11:14 AM, Eugene Grosbein wrote:
> On 17.01.2011 17:41, Mike Tancsa wrote:
>
>>>> I also have stability issues on RELENG_8.
>>>>
>>>> http://www.freebsd.org/cgi/query-pr.cgi?pr=153497
>>>
>>> Do you change net.isr.direct from default 1 to 0 for your box?
>>
>> No, I leave it at 1
>>
>> ---Mike
>
> I was experiencing some instability with mpd/netgraph too
> but found workaround: increase netgraph buffers/queues.
>
> For 4GB RAM, /boot/loader.conf:
>
> # netgraph queue sizes tuning, see vmstat -z|egrep 'ITEM|NetGraph'
> net.graph.maxdata=65536
> net.graph.maxalloc=65536
>
> For /etc/sysctl.conf:
>
> kern.ipc.maxsockbuf=83886080
> net.graph.maxdgram=8388608
> net.graph.recvspace=8388608
>
> It helps not to overflow netgraph event queues in my case
> and takes away netgraph-related stability problems.
I have only 2G of RAM on i386. On a box that has ipv6 disabled, with 641
ng interfaces right now
# vmstat -z | egrep -i 'item|netg'
ITEM SIZE LIMIT USED FREE REQUESTS
FAILURES
NetGraph items: 36, 4130, 2, 234, 8855752088,
0
NetGraph data items: 36, 531, 0, 472,
20152691765, 0
This is with 21 days of uptime and its quite stable. Enabling ipv6
seems to make the problems more likely for me.
I had to restart it as the values I chose were too high and I was getting
negative sbsize for uid = 0
vmstat -z | egrep -i 'ITEM|Netg'
ITEM SIZE LIMIT USED FREE REQUESTS
FAILURES
NetGraph items: 36, 8201, 0, 236, 25397,
0
NetGraph data items: 36, 2065, 0, 236, 54671,
0
I tweaked things down
net.graph.maxdata=2048
net.graph.maxalloc=8192
net.inet.ip.intr_queue_maxlen=500
kern.ipc.maxsockbuf=1048576
net.graph.maxdgram=524288
net.graph.recvspace=524288
I also have
devd_enable="NO"
---Mike
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