On Tue, Sep 21, 2010 at 8:31 PM, James Peltier <james_a_pelt...@yahoo.ca>
wrote:
> ----- Original Message ----
>
>> From: James Peltier <james_a_pelt...@yahoo.ca>
>> To: misc@openbsd.org
>> Sent: Tue, September 21, 2010 9:51:05 AM
>> Subject: Re: em(4) ierrs
>>
>> ----- Original Message ----
>>
>> > From: James Peltier <james_a_pelt...@yahoo.ca>
>> >  To: misc@openbsd.org
>> > Cc: misc@openbsd.org
>> > Sent: Tue, September  21, 2010 9:46:40 AM
>> > Subject: Re: em(4) ierrs
>> >
>> > -----  Original Message ----
>> >
>> > > From: Joerg Goltermann <go...@openbsd.org>
>> > > To:  Andre  Keller <a...@list.ak.cx>
>> > > Cc: misc@openbsd.org
>> > > Sent: Tue,  September  21, 2010 12:21:28 AM
>> > > Subject: Re: em(4)  ierrs
>> > >
>> > > On  20.09.2010 19:15, Andre Keller  wrote:
>> > > > Hi
>> > > >
>> > >  >
>> >  > > I  have some odd packet loss on a openbsd based router   (running
>>-current
>> > > > as  of the beginning of  september....)  .
>> > > >
>> > > > The router has 6  physical  interfaces (all em,  Intel 82575EB), 4
of
>>them
>> > >  > have traffic (about 10-20   Mbps).
>> > >
>> > > which  packet rate do you expect on the interfaces? Do  you  see
>> > >  livelocks (systat -b mbuf)?
>> > >
>> > >   -   Joerg
>> >
>> >
>> > livelocks are seen on my em interfaces as  well.  I also  have livelocks
on
>>my
>>
>> >far
>> >
>> > less  busy bge1 management interface.  See  below
>> >
>> >  IFACE             LIVELOCKS   SIZE  ALIVE   LWM   HWM   CWM
>> > System                          256   116            84
>> >                                  2k      92         504
>> > lo0
>> > em0                     29363     2k    37      4   256    37
>> >  em1                     10174    2k    37      4   256     37
>> > bge0
>> > bge1                        4    2k     17     17   512     17
>> > enc0
>> > vlan300
>> >  bridge0
>> > pflog0
>> > pflow0
>>
>>
>> I should mention that these  might have been made prior to some recent
tuning.
>>
>> However, for the  purpose of following this thread I will keep an eye on it
to
>>be
>>
>> sure.
>>
>>
>
> I am in bridging mode and I too, am indeed seeing a slow increase in
livelocks
> on my em0 interfaces.  Traffic has been quite low over the past week or so,
so
> it certainly shouldn't be an issue.  The only modifications I have made thus
far
> are to the net.inet.ip.ifq.maxlen bumped to 2048.  If you want any other
info
> please let me know.
>
>
> #sysctl -b mbuf

sure is a funny version of "sysctl" you are using there.


>   1 users    Load 0.13 0.09 0.08                      Tue Sep 21 20:22:30
2010
>
> IFACE             LIVELOCKS  SIZE ALIVE   LWM   HWM   CWM
> System                        256    98          84
>                               2k    74         504
> lo0
> em0                   29891    2k    29     4   256    29
> em1                   10381    2k    28     4   256    28
> bge0
> bge1                      4    2k    17    17   512    17
> enc0
> vlan300
> bridge0
> pflog0
> pflow0
>
>
> # netstat -m
> 100 mbufs in use:
>        95 mbufs allocated to data
>        1 mbuf allocated to packet headers
>        4 mbufs allocated to socket names and addresses
> 74/1008/6144 mbuf 2048 byte clusters in use (current/peak/max)
> 0/8/6144 mbuf 4096 byte clusters in use (current/peak/max)
> 0/8/6144 mbuf 8192 byte clusters in use (current/peak/max)
> 0/8/6144 mbuf 9216 byte clusters in use (current/peak/max)
> 0/8/6144 mbuf 12288 byte clusters in use (current/peak/max)
> 0/8/6144 mbuf 16384 byte clusters in use (current/peak/max)
> 0/8/6144 mbuf 65536 byte clusters in use (current/peak/max)
> 2544 Kbytes allocated to network (6% in use)
> 0 requests for memory denied
> 0 requests for memory delayed
> 0 calls to protocol drain routines
> #
>
>  ---
> James A. Peltier     james_a_pelt...@yahoo.ca

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