Larry Finger schrieb:
> Hauke Mehrtens wrote:
>> With this patch included and pid the rate goes up to 24Mb/s, but the
>> connection is stable. Without this patch is is only up to 11Mb/s. The
>> connection is still unusable with minstrel, it goes up too fare. It
>> starts with 24Mb/s and the connection drops. After some time it goes up
>> to 54Mb/s, but then it goes down again and the connection is working
>> again for a minute till the procedure begins again.
>>
>> What do you mean with rc_stats ?
>
> The statistics for the mistrel algorithn are presented in the /sys
> tree in a file named rc_stats. The easy way to see that data is to do
> the following:
>
> STATS=$(find /sys -name rc_stats)
> sudo cat $STATS
>
> You will get output that looks like
>
> rate throughput ewma prob this prob this succ/attempt
> success attempts
> 1 0.9 99.9 100.0 0( 0) 855
> 873
> 2 1.8 95.7 100.0 0( 0) 11
> 11
> P 5.5 5.0 99.9 100.0 0( 0) 77
> 77
> 11 9.1 95.9 100.0 0( 0) 14
> 16
> 6 5.4 95.6 100.0 0( 0) 16
> 19
> 9 8.0 95.7 100.0 0( 0) 11
> 11
> 12 10.6 95.7 100.0 0( 0) 11
> 11
> 18 15.5 95.7 100.0 0( 0) 11
> 11
> 24 20.4 96.0 100.0 0( 0) 276
> 279
> 36 5.9 96.0 100.0 0( 0) 76
> 78
> t 48 6.5 76.5 100.0 0( 0) 2958
> 3034
> T 54 20.0 99.9 100.0 1( 1) 6220
> 6400
>
> Total packet count:: ideal 9216 lookaround 485
>
> These data are for my RTL8187, which is running at 54 Mb/s (the line
> with the T) and the success rate at this speed is 6220/6400 (97%).
>
> Let the mistrel method go through several of those cycles that you
> mention and then dump and post this table. Perhaps the experts will
> see what is wrong.
>
> Larry
Hi Larry,
I captured the rc_stats for my rtl8187 device. These stats are created with kernel
2.6.29-rc3-wl (master-2009-01-28). I tried to get traffic through the link, but I was almost
dead. Most of the time it showed me 54Mb/s in iwconfig.
Hauke
hauke@hauke-desktop:~/kamikaze/openwrt5$ sudo cat $STATS
rate throughput ewma prob this prob this succ/attempt success attempts
1 0.2 25.0 100.0 0( 0) 1 1
2 0.0 3.1 12.5 0( 0) 1 8
5.5 1.2 25.0 100.0 0( 0) 1 1
P 11 5.5 57.8 12.5 0( 0) 3924 4064
6 1.4 25.0 100.0 0( 0) 1 1
9 2.1 25.0 100.0 0( 0) 1 1
12 2.7 25.0 100.0 0( 0) 1 1
18 2.0 12.5 50.0 0( 0) 1 2
24 5.3 25.0 100.0 0( 0) 1 1
t 36 6.8 22.3 12.5 0( 0) 6 34
T 48 9.1 23.3 12.5 1( 8) 27 190
54 1.3 3.1 12.5 0( 0) 1 8
Total packet count:: ideal 212 lookaround 11
hauke@hauke-desktop:~/kamikaze/openwrt5$ sudo cat $STATS
rate throughput ewma prob this prob this succ/attempt success attempts
1 0.2 25.0 100.0 0( 0) 1 1
2 0.0 3.1 12.5 0( 0) 1 8
5.5 1.2 25.0 100.0 0( 0) 1 1
P 11 5.5 57.8 12.5 0( 0) 3924 4064
6 1.4 25.0 100.0 0( 0) 1 1
9 2.1 25.0 100.0 0( 0) 1 1
12 2.7 25.0 100.0 0( 0) 1 1
18 2.0 12.5 50.0 0( 0) 1 2
24 5.3 25.0 100.0 0( 0) 1 1
t 36 5.8 19.2 10.0 0( 0) 7 44
T 48 6.0 15.4 12.5 1( 8) 36 273
54 1.3 3.1 12.5 0( 0) 1 8
Total packet count:: ideal 222 lookaround 11
hauke@hauke-desktop:~/kamikaze/openwrt5$ sudo cat $STATS
rate throughput ewma prob this prob this succ/attempt success attempts
1 0.2 25.0 100.0 0( 0) 1 1
2 0.1 5.4 12.5 0( 0) 2 16
5.5 1.2 25.0 100.0 0( 0) 1 1
P 11 4.4 46.4 12.5 0( 0) 3925 4072
6 1.4 25.0 100.0 0( 0) 1 1
9 2.1 25.0 100.0 0( 0) 1 1
12 2.7 25.0 100.0 0( 0) 1 1
18 2.0 12.5 12.5 0( 0) 2 10
24 4.6 21.8 12.5 0( 0) 2 9
t 36 4.6 15.3 12.5 0( 0) 11 76
T 48 6.4 16.3 12.5 1( 8) 83 649
54 1.3 3.1 12.5 0( 0) 1 8
Total packet count:: ideal 274 lookaround 14
hauke@hauke-desktop:~/kamikaze/openwrt5$ sudo cat $STATS
rate throughput ewma prob this prob this succ/attempt success attempts
1 0.1 17.7 12.5 0( 0) 4 25
2 0.3 16.6 50.0 0( 0) 3 18
5.5 1.9 39.6 100.0 0( 0) 4 18
11 3.0 31.6 12.5 0( 0) 3927 4088
6 0.9 17.4 12.5 0( 0) 4 27
9 1.4 17.7 12.5 0( 0) 4 25
12 4.6 41.9 100.0 0( 0) 4 14
P 18 7.9 48.8 12.5 0( 0) 120 206
24 7.4 34.7 12.5 0( 0) 133 418
T 36 11.6 38.1 12.5 1( 8) 21 135
48 5.3 13.6 12.5 0( 0) 217 1684
t 54 8.3 19.2 12.5 0( 0) 139 963
Total packet count:: ideal 793 lookaround 41
hauke@hauke-desktop:~/kamikaze/openwrt5$ sudo cat $STATS
rate throughput ewma prob this prob this succ/attempt success attempts
1 0.1 17.7 12.5 0( 0) 4 25
2 0.3 16.6 50.0 0( 0) 3 18
5.5 1.9 39.6 100.0 0( 0) 4 18
11 3.0 31.6 12.5 0( 0) 3927 4088
6 0.9 17.4 12.5 0( 0) 4 27
9 1.4 17.7 12.5 0( 0) 4 25
12 4.6 41.9 100.0 0( 0) 4 14
P 18 7.9 48.8 12.5 0( 0) 120 206
24 7.4 34.7 12.5 0( 0) 133 418
T 36 11.6 38.1 12.5 1( 8) 21 135
48 5.3 13.6 12.5 0( 0) 217 1684
t 54 8.3 19.2 12.5 0( 0) 139 963
Total packet count:: ideal 793 lookaround 41
hauke@hauke-desktop:~/kamikaze/openwrt5$ sudo cat $STATS
rate throughput ewma prob this prob this succ/attempt success attempts
1 0.1 17.7 12.5 0( 0) 4 25
2 0.7 37.4 100.0 0( 0) 4 19
5.5 1.9 39.6 100.0 0( 0) 4 18
11 2.5 26.8 12.5 0( 0) 3928 4096
6 0.9 17.4 12.5 0( 0) 4 27
9 1.4 17.7 12.5 0( 0) 4 25
P 12 4.6 41.9 100.0 0( 0) 4 14
18 5.5 33.8 12.5 0( 0) 124 229
24 5.3 25.0 12.5 0( 0) 136 442
t 36 5.8 19.3 12.5 0( 0) 33 224
48 5.3 13.6 12.5 0( 0) 217 1684
T 54 6.7 15.5 12.5 1( 8) 153 1061
Total packet count:: ideal 826 lookaround 43
hauke@hauke-desktop:~/kamikaze/openwrt5$ sudo cat $STATS
rate throughput ewma prob this prob this succ/attempt success attempts
tP 1 0.7 81.8 50.0 0( 0) 21 23
2 0.0 0.0 0.0 0( 0) 0 0
5.5 0.0 0.0 0.0 0( 0) 0 0
11 0.0 0.0 0.0 0( 0) 0 0
6 0.0 0.0 0.0 0( 0) 0 0
9 0.0 0.0 0.0 0( 0) 0 0
12 0.0 0.0 0.0 0( 0) 0 0
18 0.0 0.0 0.0 0( 0) 0 0
24 0.0 0.0 0.0 0( 0) 0 0
T 36 4.5 14.8 12.5 1( 8) 15 106
48 0.0 0.0 0.0 0( 0) 0 0
54 0.0 0.0 0.0 0( 0) 0 0
Total packet count:: ideal 36 lookaround 1
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