Re: Ralink RT2860 frame aggregation
I don't have any real answers for you. I'd look at the interframe spacing and timing; see if it's due to big gaps in transmission/reception, see if it's something silly like AMPDU density being way too big, or maybe just lots of retries. I'm sorry I can't be more helpful than this! -adrian On 11 October 2013 11:18, Ramanujan Seshadri wrote: > It's in the NIC. But it seems that it sometimes aggregates more than the > set BA win size (in the driver). In fact i was wondering - if it can > actually achieve up to 80 Mbps throughput with just 8 frames aggregated. In > fact the aggregation size doesn't seem to matter much for the throughput > because any aggregation from 5-8 seems to get the same throughput. So, i > was wondering if this is something weird in NIC or can we do some thing to > control it in the driver ? > > ram > > > On Thu, Oct 10, 2013 at 4:41 PM, Adrian Chadd wrote: > >> I forget .. is the driver or the NIC itself doing aggregation? >> >> >> -a >> >> >> On 10 October 2013 10:33, Ramanujan Seshadri wrote: >> >>> Hello all, >>> i was testing some features of ralink rt2860 driver. i saw a bit weird >>> results. below is the result of what i saw. The throughput achieved >>> doesn't >>> change much when the MPDU aggregation in an AMPDU goes from 3 to 8. And >>> also, the driver doesn't seem to aggregate more than 8 MPDU's in an AMPDU >>> even when the BA win size is set to max of 64. i was testing this by >>> fixing >>> the rate at MCS 15 >>> >>> Is there anything else i need to do to force the driver to aggregate >>> more >>> MPDU's in an AMPDU ? >>> >>> >>> >>> BA Win Size No. of MPDU'sThroughput(Mbps) >>> aggregated >>> >>> 1. 64 7-885.7 >>> >>> 2. 32 6-784.2 >>> >>> 3. 16 6-781.7 >>> >>> 4. 8 6-779.9 >>> >>> 5. 4 5 84.7 >>> >>> 6. 2 3 71.8 >>> >>> 7. 1 2 73.5 >>> >>> >>> Thanks >>> ram >>> ___ >>> freebsd-wireless@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-wireless >>> To unsubscribe, send any mail to " >>> freebsd-wireless-unsubscr...@freebsd.org" >>> >> >> > ___ freebsd-wireless@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-wireless To unsubscribe, send any mail to "freebsd-wireless-unsubscr...@freebsd.org"
Re: Ralink RT2860 frame aggregation
It's in the NIC. But it seems that it sometimes aggregates more than the set BA win size (in the driver). In fact i was wondering - if it can actually achieve up to 80 Mbps throughput with just 8 frames aggregated. In fact the aggregation size doesn't seem to matter much for the throughput because any aggregation from 5-8 seems to get the same throughput. So, i was wondering if this is something weird in NIC or can we do some thing to control it in the driver ? ram On Thu, Oct 10, 2013 at 4:41 PM, Adrian Chadd wrote: > I forget .. is the driver or the NIC itself doing aggregation? > > > -a > > > On 10 October 2013 10:33, Ramanujan Seshadri wrote: > >> Hello all, >> i was testing some features of ralink rt2860 driver. i saw a bit weird >> results. below is the result of what i saw. The throughput achieved >> doesn't >> change much when the MPDU aggregation in an AMPDU goes from 3 to 8. And >> also, the driver doesn't seem to aggregate more than 8 MPDU's in an AMPDU >> even when the BA win size is set to max of 64. i was testing this by >> fixing >> the rate at MCS 15 >> >> Is there anything else i need to do to force the driver to aggregate more >> MPDU's in an AMPDU ? >> >> >> >> BA Win Size No. of MPDU'sThroughput(Mbps) >> aggregated >> >> 1. 64 7-885.7 >> >> 2. 32 6-784.2 >> >> 3. 16 6-781.7 >> >> 4. 8 6-779.9 >> >> 5. 4 5 84.7 >> >> 6. 2 3 71.8 >> >> 7. 1 2 73.5 >> >> >> Thanks >> ram >> ___ >> freebsd-wireless@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-wireless >> To unsubscribe, send any mail to " >> freebsd-wireless-unsubscr...@freebsd.org" >> > > ___ freebsd-wireless@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-wireless To unsubscribe, send any mail to "freebsd-wireless-unsubscr...@freebsd.org"
Re: Ralink RT2860 frame aggregation
I forget .. is the driver or the NIC itself doing aggregation? -a On 10 October 2013 10:33, Ramanujan Seshadri wrote: > Hello all, > i was testing some features of ralink rt2860 driver. i saw a bit weird > results. below is the result of what i saw. The throughput achieved doesn't > change much when the MPDU aggregation in an AMPDU goes from 3 to 8. And > also, the driver doesn't seem to aggregate more than 8 MPDU's in an AMPDU > even when the BA win size is set to max of 64. i was testing this by fixing > the rate at MCS 15 > > Is there anything else i need to do to force the driver to aggregate more > MPDU's in an AMPDU ? > > > > BA Win Size No. of MPDU'sThroughput(Mbps) > aggregated > > 1. 64 7-885.7 > > 2. 32 6-784.2 > > 3. 16 6-781.7 > > 4. 8 6-779.9 > > 5. 4 5 84.7 > > 6. 2 3 71.8 > > 7. 1 2 73.5 > > > Thanks > ram > ___ > freebsd-wireless@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-wireless > To unsubscribe, send any mail to "freebsd-wireless-unsubscr...@freebsd.org > " > ___ freebsd-wireless@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-wireless To unsubscribe, send any mail to "freebsd-wireless-unsubscr...@freebsd.org"
