Hello Alex,
SCHED_ULE, HZ=1000:
I use this too
> From the output of "netstat -nI em0 -w 5":
maybe mistake, did you meen "netstat -w5 em0" ?
Nope, exactly as in my mail, "netstat -nI em0 -w 5". It does take 5
seconds to produce meaningful output.
hmm, just comments:
-n Show network addresses and ports as numbers.
-l Shows listen sockets
-nl with -w is wrong parameters.
I have PPPoE concenrator based on S3000AHV motherboard with
Core2Quad 6600 and four (to load all cores in CPU) Intel
PCI-E x1 and PCI-E x4 NIC's
My load:
...
Pretty impressive figures. And "netstat -ni" shows 0 errors on all cards?
Not exactly zero, but for uptime 155 days it seems to be ok.
bras1 [/usr/home/dm]# netstat -i|grep em
em0 1500 <Link#1> 00:15:17:71:f8:52 2457503820 20175 2096211799
0 0
em1 1500 <Link#2> 00:15:17:71:f8:52 1084492221 11188 909418060 0
0
em2 1500 <Link#3> 00:15:17:71:f8:52 4212941427 29566 3500442287
0 0
em3 1500 <Link#4> 00:15:17:71:f8:52 2143321197 0 1878792786
0 0
This counters was made by UDP flood, when dummynet can't process all packets
and
swi:net loads one core up to 100%. Yes, the dummynet on this machine, its
bad idea but it's
working stable. (After this incident the switches now control the flood
attack)
NOTE: the MAC is equal because i use if_lagg(4) for this interfaces for load
all cores in CPU
I think it depends by motherbord, what full hardware specification are
you using? with chips names
The machine is a Dell PowerEdge 2850. According to its specs, the chipset
is Intel E7520.
Two 64-bit Xeon processors at 3.20GHz, 4 GB RAM.
For you bandwidth this server must work fine.
Check the UDP/ICMP or other flood on em0 when errors appear.
What kind of device at the end of em0 copper cable?
If this a manageable switch, and supports tools - try to investigate what
happens when errors appear.
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