This. Say my AP can do ten megs/second of downlink to clients. My throughput chart is flatlined at 6 mb/s.
Why? Is it because some of the clients are in lower modulations, and using more timeslots to move a given amount of data than they should? Is it that the radio is doing lots of retransmitting? If so, who? From: Af [mailto:af-boun...@afmug.com] On Behalf Of Mike Hammett via Af Sent: Thursday, October 30, 2014 3:40 PM To: af@afmug.com Subject: Re: [AFMUG] Feature Request of all radio manufacturers: Radio utilization or duty cycle meters You're missing the point. I want to know what the air interface is doing. It may be completely stopped up by retransmissions or bad clients, yet that isn't easily seen by other means (CPU usage, IRQ usage, throughput, etc.). ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL> _____ From: "Stefan Englhardt via Af" <af@afmug.com> To: af@afmug.com Sent: Thursday, October 30, 2014 2:33:51 PM Subject: Re: [AFMUG] Feature Request of all radio manufacturers: Radio utilization or duty cycle meters .a has only 54Mbit/s Phy rate. RB800 is quite powerful. With N/AC you see a lot more cpu work. With TDMA protocol the cpu has to work in fixed cycles with low latency. So if it is busy while it has to send the next map for the cpes at an exact timing the whole sector suffers. So the cpu should stay at a low level to keep the protocol running. Von: Af [mailto:af-boun...@afmug.com] Im Auftrag von Mike Hammett via Af Gesendet: Donnerstag, 30. Oktober 2014 20:22 An: af@afmug.com Betreff: Re: [AFMUG] Feature Request of all radio manufacturers: Radio utilization or duty cycle meters The CPU usage doesn't tell you RF congestion, retransmits, etc. It just tells you how busy the CPU is. If you're running NV2 on an A card in an RB800, your CPU is going to be low, but your radio is going to be very busy and yet not including that information. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL> _____ From: "Stefan Englhardt via Af" <af@afmug.com> To: af@afmug.com Sent: Thursday, October 30, 2014 2:19:30 PM Subject: Re: [AFMUG] Feature Request of all radio manufacturers: Radio utilization or duty cycle meters This is not quite right. TDMA Protocols like NV2 and Airmax are CPU limited. ----- GENIAS INTERNET -- <http://www.genias.net> www.genias.net ------ Stefan Englhardt Email: <mailto:s...@genias.net> s...@genias.net Dr. Gesslerstr. 20 D-93051 Regensburg Tel: +49 941 942798-0 Fax: +49 941 942798-9 Von: Af [mailto:af-boun...@afmug.com] Im Auftrag von Mike Hammett via Af Gesendet: Donnerstag, 30. Oktober 2014 20:09 An: af@afmug.com Betreff: Re: [AFMUG] Feature Request of all radio manufacturers: Radio utilization or duty cycle meters CPU is largely unrelated to what the radio is doing. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL> _____ From: "Bill Prince via Af" <af@afmug.com> To: af@afmug.com Sent: Thursday, October 30, 2014 2:05:45 PM Subject: Re: [AFMUG] Feature Request of all radio manufacturers: Radio utilization or duty cycle meters You can get a CPU load metric from UBNT radios (example below). <http://127.0.0.1:58274/service/home/%7E/?auth=co&id=1de3965e-b725-4c61-b23b-9b05aabb2124:31900&part=2.2> bp On 10/30/2014 11:22 AM, Mike Hammett via Af wrote: I want to see utilization or duty cycle meters. Tell me how busy the AP is so I know how much more can fit... and break down into different categories why it's busy. TX, Rx, retransmit, overhead, MCS 15, MCS 0, which stations are using what percent, etc. I'd say that knowing how busy the radio is is more important than knowing how many bits are flowing through it. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL>
