Regular Member
Posts: 450
Registered: ‎07-22-2008
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PPS/performance stats???

Hi,

Are there stats anywhere for maximum packets-per-second for rocket M5 and nanostation M5 products. Looking at using these for pTp units but not sure they have the horsepower to replace my ligowave equipment. I don't question the ability to do high bandwidth from a sigle user but what about when there are 500 users and 5000 streams competing for radio time?

Thanks
SuperUser
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Re: PPS/performance stats???

5000 streams? I don't think you can expect a rocket M5 link to pass more than 20,000 packets per second with a MIMO 40MHz channel with the current firmware (and only more if significant improvements are made to the linux bridging code from 2.6.15 to now.) The hardware seems to hit almost constant 90+% CPU usage passing around 18,000 pps and the ack timing/framing/aggregation (which changes as the TDMA architecture is improved) introduces other limitations which improve as your channel gets larger.
Don't get me wrong, these numbers are excellent. It might have been better if they used a faster Atheros processor, of course. I think Atheros makes a 680MHz chip they could have used. blah, blah, blah
Member
Posts: 112
Registered: ‎10-27-2009

Re: PPS/performance stats???

I too am wondering the answer to this question...
Regular Member
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Registered: ‎07-22-2008
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thanks twinkletoes

5000 streams...just planning for the future Man Happy
Right now about the most PPS I see through a single link is 5k so if these in fact will do 10k comfortably they'll work fine for my minor backhauls and certainly for AP's. The ligowave backhauls are supposed to do 50k but I have no way of testing that. They do perform well but these are a fraction of the price. We'll see how stable they are....
Member
Posts: 255
Registered: ‎01-07-2009

Re: PPS/performance stats???

I have a ptp link setup using the older ps5, and have a site with about 300 college students banging the internet 24x7. No problems with these. I am bringing online today a rocket5 to nanm5 ptp link to run these kids traffic off my moto ptp400 link. I will let you know how it goes. Do not expect any issues...
Alan Long
Aerowire
Member
Posts: 255
Registered: ‎01-07-2009

Re: PPS/performance stats???

New link is up. I have been watching it for about an hour. I have noticed as my traffic goes up teh ccq% jumps down, but has not seemed to affect pings times. I am hopping 2 miles across the rocket link and then another 2 miles across the ps5 link and steady getting 5-7ms on a 1400 byte ping, and that is whith 4-5mb/s of user traffic passing the link. More to follow if I see any other items...
Alan Long
Aerowire
Regular Member
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Registered: ‎07-22-2008
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Re: PPS/performance stats???

Let us know how it does if you do 15-20mg's through it
Regular Member
Posts: 466
Registered: ‎07-09-2008
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Solutions: 2

Re: PPS/performance stats???

You can measure the PPS of anything with the OID of the packets transferred.

# snmpwalk -v1 -cpublic 10.8.1.2 1.3.6.1.2.1.2.2.1.17
IF-MIB::ifOutUcastPkts.1 = Counter32: 0
IF-MIB::ifOutUcastPkts.2 = Counter32: 0
IF-MIB::ifOutUcastPkts.3 = Counter32: 14996996
IF-MIB::ifOutUcastPkts.4 = Counter32: 0
IF-MIB::ifOutUcastPkts.6 = Counter32: 59373
IF-MIB::ifOutUcastPkts.12 = Counter32: 0
IF-MIB::ifOutUcastPkts.15 = Counter32: 19533939


# snmpwalk -v1 -cpublic -On 10.8.1.2 1.3.6.1.2.1.2.2.1.17
.1.3.6.1.2.1.2.2.1.17.1 = Counter32: 0
.1.3.6.1.2.1.2.2.1.17.2 = Counter32: 0
.1.3.6.1.2.1.2.2.1.17.3 = Counter32: 15002217
.1.3.6.1.2.1.2.2.1.17.4 = Counter32: 0
.1.3.6.1.2.1.2.2.1.17.6 = Counter32: 59385
.1.3.6.1.2.1.2.2.1.17.12 = Counter32: 0
.1.3.6.1.2.1.2.2.1.17.15 = Counter32: 19541862

If you don't SNMP the actual radio, you could do it on the switch ports you are using.


I would suggest doing your own testing rather than using hearsay or marketing material. The radios are cheap enough to get a pair.
Jason Philbrook
Member
Posts: 255
Registered: ‎01-07-2009

Re: PPS/performance stats???

Ok it has run 15-20 mb/s and teh highest ping time I got was 141, I did have some dropped packets, maybe 100 or so out of 25,000....where under no load I was not dropping any. I have airmax turned off, no auto ack set, and I dohave auto speed set. I have noticed the ccq% is jumping all over the place, 50%-100%, but my signal level is staying the same -67....does not seem to affect traffic flow at this point, as when it is low ccq%, my ping times are in the low teens or lower...I am running the rc6 softwrae on each end, rocket5 to nanom5 link...
Alan Long
Aerowire
Regular Member
Posts: 450
Registered: ‎07-22-2008
Kudos: 3

Re: PPS/performance stats???

I know how to measure them and have a pair of radio I'm working with. What I don't have is a way to generate 20k packet streams to really load them up and see what happens. Doing simple 50Mbps downloads doesn't do hardly any packet count.
Highlighted
Member
Posts: 142
Registered: ‎08-21-2009
Kudos: 3

Re: PPS/performance stats???

try ping -f
-f option is flood
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