ath: tx-rate stops adapting after a while
Adrian Chadd
adrian.chadd at gmail.com
Mon Apr 25 13:53:24 UTC 2011
hm. I have seen this at home but only in artificial setups. I am glad
you're seeing this.
The problem is that it isn't immediately obvious if it is a tx
problem, an rx problem or a bit of both.
Would you mind trying -head first? Just so you are running the same
code as i am?
On 25/04/2011, Petar Bogdanovic <petar at smokva.net> wrote:
> On Sat, Apr 23, 2011 at 01:14:43AM +0800, Adrian Chadd wrote:
>>
>> Do that when it's happy @ 54mbit, then when it isn't. Let's compare.
>
> Ok, here we go:
>
> (1) sample_stats after a few hours happiness only
>
> [HWADDR-FREEBSD-AP] refcnt 5 static_rix 0 ratemask 0x0
> [ 250] cur rix 0 since switch: packets 0 ticks 0
> [ 250] last sample 0 cur sample 0 packets sent 0
> [ 250] packets since sample 0 sample tt 0
> [1600] cur rix 0 since switch: packets 0 ticks 0
> [1600] last sample 0 cur sample 0 packets sent 0
> [1600] packets since sample 0 sample tt 0
>
> [HWADDR-NETBSD-STA] refcnt 3 static_rix -1 ratemask 0xfcf
> [ 250] cur rix 10 since switch: packets 1 ticks 96635490
> [ 250] last sample 11 cur sample -1 packets sent 2819633
> [ 250] packets since sample 8 sample tt 444
> [1600] cur rix 11 since switch: packets 2 ticks 96515658
> [1600] last sample 10 cur sample -1 packets sent 5805129
> [1600] packets since sample 2 sample tt 672
> [ 1: 250] 24:24 (100%) T 24 F 0 avg 3216 last
> 169832
> [ 1:1600] 5:5 (100%) T 6 F 0 avg 16940 last
> 9861244
> [11:1600] 1:1 (100%) T 1 F 0 avg 2085 last
> 9867211
> [12: 250] 1972:1972 (100%) T 2111 F 0 avg 673 last
> 3197972
> [18: 250] 7173:7172 ( 99%) T 7737 F 0 avg 639 last
> 3177528
> [18:1600] 3:2 ( 66%) T 8 F 1 avg 1820 last
> 8846212
> [24: 250] 42567:42563 ( 99%) T 44791 F 0 avg 516 last
> 3175409
> [24:1600] 927:923 ( 99%) T 992 F 0 avg 1102 last
> 3216447
> [36: 250] 339953:339935 ( 99%) T 355486 F 0 avg 505 last
> 3161841
> [36:1600] 12573:12555 ( 99%) T 13346 F 0 avg 850 last
> 3204473
> [48: 250] 986272:986199 ( 99%) T 1030354 F 0 avg 448 last
> 240193
> [48:1600] 896245:896161 ( 99%) T 927385 F 0 avg 768 last
> 3178500
> [54: 250] 1441934:1441804 ( 99%) T 1505752 F 0 avg 477 last
> 360073
> [54:1600] 4895676:4895500 ( 99%) T 5048083 F 0 avg 644 last
> 360095
>
> [HWADDR-OSX106-STA] refcnt 3 static_rix -1 ratemask 0xfcf
> [ 250] cur rix 11 since switch: packets 7 ticks 96872650
> [ 250] last sample 8 cur sample -1 packets sent 268
> [ 250] packets since sample 7 sample tt 492
> [1600] cur rix 10 since switch: packets 128 ticks 96873953
> [1600] last sample 11 cur sample -1 packets sent 19736
> [1600] packets since sample 1 sample tt 644
> [ 1: 250] 5:5 (100%) T 6 F 0 avg 3980 last
> 170183
> [ 1:1600] 1:0 ( 0%) T 3 F 1 avg 28642 last
> 62489
> [12: 250] 8:8 (100%) T 11 F 0 avg 1195 last
> 214446
> [12:1600] 2:2 (100%) T 2 F 0 avg 1480 last
> 57381
> [18: 250] 12:12 (100%) T 14 F 0 avg 655 last
> 155966
> [18:1600] 146:146 (100%) T 164 F 0 avg 1323 last
> 52414
> [24: 250] 16:16 (100%) T 19 F 0 avg 631 last
> 18212
> [24:1600] 905:904 ( 99%) T 1030 F 0 avg 1260 last 6699
> [36: 250] 6:6 (100%) T 9 F 0 avg 829 last
> 143665
> [36:1600] 605:603 ( 99%) T 681 F 0 avg 941 last 2139
> [48: 250] 28:27 ( 96%) T 33 F 0 avg 635 last
> 18481
> [48:1600] 5598:5595 ( 99%) T 6180 F 0 avg 771 last 1259
> [54: 250] 199:199 (100%) T 214 F 0 avg 519 last 3158
> [54:1600] 12488:12485 ( 99%) T 13925 F 0 avg 814 last 1307
>
>
> (2) sample_stats after a few hours being happy, then depressed.. for the
> sake of comparison, I included the stats for an always happy OSX box
>
> [HWADDR-FREEBSD-AP] refcnt 4 static_rix 0 ratemask 0x0
> [ 250] cur rix 0 since switch: packets 0 ticks 0
> [ 250] last sample 0 cur sample 0 packets sent 0
> [ 250] packets since sample 0 sample tt 0
> [1600] cur rix 0 since switch: packets 0 ticks 0
> [1600] last sample 0 cur sample 0 packets sent 0
> [1600] packets since sample 0 sample tt 0
>
> [HWADDR-NETBSD-STA] refcnt 65 static_rix -1 ratemask 0xfcf
> [ 250] cur rix 9 since switch: packets 2 ticks 84635202
> [ 250] last sample 11 cur sample -1 packets sent 7530330
> [ 250] packets since sample 6 sample tt 444
> [1600] cur rix 3 since switch: packets 20 ticks 84658350
> [1600] last sample 8 cur sample -1 packets sent 168841
> [1600] packets since sample 2 sample tt 940
> [ 1: 250] 546:545 ( 99%) T 717 F 0 avg 4149 last
> 20012
> [ 1:1600] 1:0 ( 0%) T 3 F 1 avg 14016 last
> 898932
> [ 5: 250] 48:48 (100%) T 49 F 0 avg 1314 last
> 5066666
> [11: 250] 373:373 (100%) T 429 F 0 avg 1374 last
> 6129628
> [11:1600] 168619:168619 (100%) T 175842 F 0 avg 2142 last 323
> [12: 250] 33141:33021 ( 99%) T 36265 F 0 avg 670 last
> 225657
> [12:1600] 152:32 ( 21%) T 663 F 115 avg 2218 last
> 6130416
> [18: 250] 56864:56664 ( 99%) T 63313 F 0 avg 633 last
> 224868
> [18:1600] 216:16 ( 7%) T 1360 F 185 avg 1286 last
> 3206776
> [24: 250] 190793:190116 ( 99%) T 207079 F 0 avg 512 last
> 188474
> [24:1600] 686:9 ( 1%) T 5050 F 638 avg 940 last
> 1244466
> [36: 250] 746945:746368 ( 99%) T 789265 F 0 avg 488 last
> 23353
> [36:1600] 585:8 ( 1%) T 4082 F 577 avg 892 last
> 289086
> [48: 250] 2384880:2383906 ( 99%) T 2503980 F 0 avg 556 last
> 135017
> [48:1600] 1006:32 ( 3%) T 6951 F 970 avg 691 last
> 279662
> [54: 250] 4124833:4121865 ( 99%) T 4326694 F 0 avg 513 last
> 66133
> [54:1600] 3031:63 ( 2%) T 21813 F 2960 avg 767 last
> 357176
>
> [HWADDR-OSX106-STA] refcnt 7 static_rix -1 ratemask 0xfcf
> [ 250] cur rix 10 since switch: packets 4 ticks 84656713
> [ 250] last sample 11 cur sample -1 packets sent 110264
> [ 250] packets since sample 2 sample tt 444
> [1600] cur rix 11 since switch: packets 54 ticks 84657320
> [1600] last sample 10 cur sample 10 packets sent 505325
> [1600] packets since sample 3 sample tt 672
> [ 1: 250] 20:17 ( 85%) T 27 F 0 avg 3977 last
> 20537
> [ 1:1600] 17:12 ( 70%) T 36 F 0 avg 25887 last
> 115951
> [ 5: 250] 2:2 (100%) T 2 F 0 avg 1295 last
> 5277352
> [ 5:1600] 1:1 (100%) T 1 F 0 avg 3259 last
> 3356857
> [11:1600] 4:4 (100%) T 7 F 0 avg 5426 last
> 115902
> [12: 250] 581:581 (100%) T 585 F 0 avg 597 last
> 39452
> [12:1600] 3:3 (100%) T 8 F 0 avg 13568 last
> 1076285
> [18: 250] 1263:1262 ( 99%) T 1290 F 0 avg 600 last
> 159936
> [18:1600] 817:816 ( 99%) T 847 F 0 avg 2927 last
> 356098
> [24: 250] 3462:3461 ( 99%) T 3526 F 0 avg 509 last
> 35807
> [24:1600] 8321:8317 ( 99%) T 8588 F 0 avg 1000 last
> 105002
> [36: 250] 11383:11380 ( 99%) T 11578 F 0 avg 492 last 8258
> [36:1600] 2220:2215 ( 99%) T 2402 F 0 avg 909 last
> 10730
> [48: 250] 32340:32335 ( 99%) T 32821 F 0 avg 448 last 1812
> [48:1600] 74473:74455 ( 99%) T 76257 F 0 avg 685 last 2116
> [54: 250] 61249:61243 ( 99%) T 62101 F 0 avg 463 last 2078
> [54:1600] 419600:419540 ( 99%) T 426599 F 0 avg 689 last 1233
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