Date: Mon, 19 Mar 2012 22:20:14 GMT From: Vincent Hoffman <vince@unsane.co.uk> To: freebsd-wireless@FreeBSD.org Subject: Re: kern/166190: [ath] TX hangs and frames stuck in TX queue Message-ID: <201203192220.q2JMKECm059189@freefall.freebsd.org>
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The following reply was made to PR kern/166190; it has been noted by GNATS.
From: Vincent Hoffman <vince@unsane.co.uk>
To: Adrian Chadd <adrian.chadd@gmail.com>
Cc: "bug-followup@freebsd.org" <bug-followup@freebsd.org>
Subject: Re: kern/166190: [ath] TX hangs and frames stuck in TX queue
Date: Mon, 19 Mar 2012 22:10:57 +0000
This is a multi-part message in MIME format.
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During an iperf test
Total TX buffers went from 512 -> 356)
iperf output (tcp, sending form freebsd machine to osx laptop [ 4]
0.0-60.2 sec 154 MBytes 21.4 Mbits/sec)
dmesg output:
no tx bufs (empty list): 0
no tx bufs (was busy): 0
aggr single packet: 14372
aggr single packet w/ BAW closed: 0
aggr non-baw packet: 1
aggr aggregate packet: 119987
aggr single packet low hwq: 641424
aggr sched, no work: 15333
0: 0 1: 0 2: 7811 3: 5690
4: 5077 5: 4509 6: 4675 7: 4546
8: 5255 9: 5061 10: 4796 11: 9393
12: 3094 13: 2604 14: 2647 15: 2301
16: 4372 17: 2440 18: 4558 19: 8300
20: 6962 21: 4679 22: 2404 23: 1270
24: 1076 25: 929 26: 866 27: 856
28: 835 29: 895 30: 1033 31: 1016
32: 10037 33: 0 34: 0 35: 0
36: 0 37: 0 38: 0 39: 0
40: 0 41: 0 42: 0 43: 0
44: 0 45: 0 46: 0 47: 0
48: 0 49: 0 50: 0 51: 0
52: 0 53: 0 54: 0 55: 0
56: 0 57: 0 58: 0 59: 0
60: 0 61: 0 62: 0 63: 0
HW TXQ 0: axq_depth=0, axq_aggr_depth=0
HW TXQ 1: axq_depth=0, axq_aggr_depth=0
HW TXQ 2: axq_depth=0, axq_aggr_depth=0
HW TXQ 3: axq_depth=0, axq_aggr_depth=0
HW TXQ 8: axq_depth=0, axq_aggr_depth=0
Total TX buffers: 512; Total TX buffers busy: 0
no tx bufs (empty list): 0
no tx bufs (was busy): 0
aggr single packet: 14553
aggr single packet w/ BAW closed: 0
aggr non-baw packet: 1
aggr aggregate packet: 121203
aggr single packet low hwq: 643315
aggr sched, no work: 15414
0: 0 1: 0 2: 7931 3: 5744
4: 5116 5: 4554 6: 4716 7: 4577
8: 5284 9: 5097 10: 4822 11: 9425
12: 3123 13: 2628 14: 2671 15: 2322
16: 5036 17: 2442 18: 4558 19: 8300
20: 6962 21: 4679 22: 2404 23: 1270
24: 1076 25: 929 26: 866 27: 856
28: 835 29: 895 30: 1033 31: 1016
32: 10037 33: 0 34: 0 35: 0
36: 0 37: 0 38: 0 39: 0
40: 0 41: 0 42: 0 43: 0
44: 0 45: 0 46: 0 47: 0
48: 0 49: 0 50: 0 51: 0
52: 0 53: 0 54: 0 55: 0
56: 0 57: 0 58: 0 59: 0
60: 0 61: 0 62: 0 63: 0
HW TXQ 0: axq_depth=0, axq_aggr_depth=0
HW TXQ 1: axq_depth=2, axq_aggr_depth=2
HW TXQ 2: axq_depth=0, axq_aggr_depth=0
HW TXQ 3: axq_depth=0, axq_aggr_depth=0
HW TXQ 8: axq_depth=0, axq_aggr_depth=0
Total TX buffers: 481; Total TX buffers busy: 0
no tx bufs (empty list): 0
no tx bufs (was busy): 0
aggr single packet: 14928
aggr single packet w/ BAW closed: 0
aggr non-baw packet: 1
aggr aggregate packet: 125149
aggr single packet low hwq: 645085
aggr sched, no work: 15673
0: 0 1: 0 2: 8187 3: 5884
4: 5230 5: 4653 6: 4801 7: 4649
8: 5347 9: 5168 10: 4891 11: 9496
12: 3305 13: 2715 14: 2753 15: 2399
16: 7473 17: 2464 18: 4565 19: 8304
20: 6966 21: 4681 22: 2405 23: 1270
24: 1077 25: 929 26: 866 27: 856
28: 835 29: 895 30: 1033 31: 1016
32: 10037 33: 0 34: 0 35: 0
36: 0 37: 0 38: 0 39: 0
40: 0 41: 0 42: 0 43: 0
44: 0 45: 0 46: 0 47: 0
48: 0 49: 0 50: 0 51: 0
52: 0 53: 0 54: 0 55: 0
56: 0 57: 0 58: 0 59: 0
60: 0 61: 0 62: 0 63: 0
HW TXQ 0: axq_depth=0, axq_aggr_depth=0
HW TXQ 1: axq_depth=2, axq_aggr_depth=1
HW TXQ 2: axq_depth=0, axq_aggr_depth=0
HW TXQ 3: axq_depth=0, axq_aggr_depth=0
HW TXQ 8: axq_depth=0, axq_aggr_depth=0
Total TX buffers: 502; Total TX buffers busy: 0
no tx bufs (empty list): 0
no tx bufs (was busy): 0
aggr single packet: 15237
aggr single packet w/ BAW closed: 0
aggr non-baw packet: 1
aggr aggregate packet: 127403
aggr single packet low hwq: 646324
aggr sched, no work: 15851
0: 0 1: 0 2: 8360 3: 5998
4: 5304 5: 4703 6: 4846 7: 4701
8: 5377 9: 5216 10: 4935 11: 9544
12: 3383 13: 2753 14: 2811 15: 2441
16: 8822 17: 2474 18: 4566 19: 8304
20: 6966 21: 4681 22: 2406 23: 1270
24: 1077 25: 929 26: 866 27: 856
28: 835 29: 895 30: 1033 31: 1016
32: 10037 33: 0 34: 0 35: 0
36: 0 37: 0 38: 0 39: 0
40: 0 41: 0 42: 0 43: 0
44: 0 45: 0 46: 0 47: 0
48: 0 49: 0 50: 0 51: 0
52: 0 53: 0 54: 0 55: 0
56: 0 57: 0 58: 0 59: 0
60: 0 61: 0 62: 0 63: 0
HW TXQ 0: axq_depth=0, axq_aggr_depth=0
HW TXQ 1: axq_depth=2, axq_aggr_depth=2
HW TXQ 2: axq_depth=0, axq_aggr_depth=0
HW TXQ 3: axq_depth=0, axq_aggr_depth=0
HW TXQ 8: axq_depth=0, axq_aggr_depth=0
Total TX buffers: 356; Total TX buffers busy: 0
On 19/03/2012 21:49, Adrian Chadd wrote:
> Just check the txagg sysctl and mae sure your buffer count stays up
> around 512.
>
> I want to make sure that buffers aren't being leaked.
>
> Thanks again!
>
>
>
> Sent from my Palm Pre on AT&T
>
> ------------------------------------------------------------------------
> On Mar 19, 2012 2:38 PM, Vincent Hoffman <vince@unsane.co.uk> wrote:
>
> Hi Adrian,
>
>
> This patch is looking good as yet, I've repeated tests that were
> previously causing timeouts and as yet not been able cause a timeout
> after applying this patch.
>
> Its not definitive but so far it appears to have resolved this issue
> for me.
>
>
> Regards,
> Vince Hoffman
--------------070001010500040909030800
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During an iperf test<br>
Total TX buffers went from 512 -> 356)<br>
<br>
iperf output (tcp, sending form freebsd machine to osx laptop [ 4]
0.0-60.2 sec 154 MBytes 21.4 Mbits/sec)<br>
<br>
dmesg output:<br>
<br>
no tx bufs (empty list): 0<br>
no tx bufs (was busy): 0<br>
aggr single packet: 14372<br>
aggr single packet w/ BAW closed: 0<br>
aggr non-baw packet: 1<br>
aggr aggregate packet: 119987<br>
aggr single packet low hwq: 641424<br>
aggr sched, no work: 15333<br>
0: 0 1: 0 2: 7811 3: 5690 <br>
4: 5077 5: 4509 6: 4675 7: 4546 <br>
8: 5255 9: 5061 10: 4796 11: 9393 <br>
12: 3094 13: 2604 14: 2647 15: 2301 <br>
16: 4372 17: 2440 18: 4558 19: 8300 <br>
20: 6962 21: 4679 22: 2404 23: 1270 <br>
24: 1076 25: 929 26: 866 27: 856 <br>
28: 835 29: 895 30: 1033 31: 1016 <br>
32: 10037 33: 0 34: 0 35: 0 <br>
36: 0 37: 0 38: 0 39: 0 <br>
40: 0 41: 0 42: 0 43: 0 <br>
44: 0 45: 0 46: 0 47: 0 <br>
48: 0 49: 0 50: 0 51: 0 <br>
52: 0 53: 0 54: 0 55: 0 <br>
56: 0 57: 0 58: 0 59: 0 <br>
60: 0 61: 0 62: 0 63: 0 <br>
<br>
HW TXQ 0: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 1: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 2: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 3: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 8: axq_depth=0, axq_aggr_depth=0<br>
Total TX buffers: 512; Total TX buffers busy: 0<br>
no tx bufs (empty list): 0<br>
no tx bufs (was busy): 0<br>
aggr single packet: 14553<br>
aggr single packet w/ BAW closed: 0<br>
aggr non-baw packet: 1<br>
aggr aggregate packet: 121203<br>
aggr single packet low hwq: 643315<br>
aggr sched, no work: 15414<br>
0: 0 1: 0 2: 7931 3: 5744 <br>
4: 5116 5: 4554 6: 4716 7: 4577 <br>
8: 5284 9: 5097 10: 4822 11: 9425 <br>
12: 3123 13: 2628 14: 2671 15: 2322 <br>
16: 5036 17: 2442 18: 4558 19: 8300 <br>
20: 6962 21: 4679 22: 2404 23: 1270 <br>
24: 1076 25: 929 26: 866 27: 856 <br>
28: 835 29: 895 30: 1033 31: 1016 <br>
32: 10037 33: 0 34: 0 35: 0 <br>
36: 0 37: 0 38: 0 39: 0 <br>
40: 0 41: 0 42: 0 43: 0 <br>
44: 0 45: 0 46: 0 47: 0 <br>
48: 0 49: 0 50: 0 51: 0 <br>
52: 0 53: 0 54: 0 55: 0 <br>
56: 0 57: 0 58: 0 59: 0 <br>
60: 0 61: 0 62: 0 63: 0 <br>
<br>
HW TXQ 0: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 1: axq_depth=2, axq_aggr_depth=2<br>
HW TXQ 2: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 3: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 8: axq_depth=0, axq_aggr_depth=0<br>
Total TX buffers: 481; Total TX buffers busy: 0<br>
no tx bufs (empty list): 0<br>
no tx bufs (was busy): 0<br>
aggr single packet: 14928<br>
aggr single packet w/ BAW closed: 0<br>
aggr non-baw packet: 1<br>
aggr aggregate packet: 125149<br>
aggr single packet low hwq: 645085<br>
aggr sched, no work: 15673<br>
0: 0 1: 0 2: 8187 3: 5884 <br>
4: 5230 5: 4653 6: 4801 7: 4649 <br>
8: 5347 9: 5168 10: 4891 11: 9496 <br>
12: 3305 13: 2715 14: 2753 15: 2399 <br>
16: 7473 17: 2464 18: 4565 19: 8304 <br>
20: 6966 21: 4681 22: 2405 23: 1270 <br>
24: 1077 25: 929 26: 866 27: 856 <br>
28: 835 29: 895 30: 1033 31: 1016 <br>
32: 10037 33: 0 34: 0 35: 0 <br>
36: 0 37: 0 38: 0 39: 0 <br>
40: 0 41: 0 42: 0 43: 0 <br>
44: 0 45: 0 46: 0 47: 0 <br>
48: 0 49: 0 50: 0 51: 0 <br>
52: 0 53: 0 54: 0 55: 0 <br>
56: 0 57: 0 58: 0 59: 0 <br>
60: 0 61: 0 62: 0 63: 0 <br>
<br>
HW TXQ 0: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 1: axq_depth=2, axq_aggr_depth=1<br>
HW TXQ 2: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 3: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 8: axq_depth=0, axq_aggr_depth=0<br>
Total TX buffers: 502; Total TX buffers busy: 0<br>
no tx bufs (empty list): 0<br>
no tx bufs (was busy): 0<br>
aggr single packet: 15237<br>
aggr single packet w/ BAW closed: 0<br>
aggr non-baw packet: 1<br>
aggr aggregate packet: 127403<br>
aggr single packet low hwq: 646324<br>
aggr sched, no work: 15851<br>
0: 0 1: 0 2: 8360 3: 5998 <br>
4: 5304 5: 4703 6: 4846 7: 4701 <br>
8: 5377 9: 5216 10: 4935 11: 9544 <br>
12: 3383 13: 2753 14: 2811 15: 2441 <br>
16: 8822 17: 2474 18: 4566 19: 8304 <br>
20: 6966 21: 4681 22: 2406 23: 1270 <br>
24: 1077 25: 929 26: 866 27: 856 <br>
28: 835 29: 895 30: 1033 31: 1016 <br>
32: 10037 33: 0 34: 0 35: 0 <br>
36: 0 37: 0 38: 0 39: 0 <br>
40: 0 41: 0 42: 0 43: 0 <br>
44: 0 45: 0 46: 0 47: 0 <br>
48: 0 49: 0 50: 0 51: 0 <br>
52: 0 53: 0 54: 0 55: 0 <br>
56: 0 57: 0 58: 0 59: 0 <br>
60: 0 61: 0 62: 0 63: 0 <br>
<br>
HW TXQ 0: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 1: axq_depth=2, axq_aggr_depth=2<br>
HW TXQ 2: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 3: axq_depth=0, axq_aggr_depth=0<br>
HW TXQ 8: axq_depth=0, axq_aggr_depth=0<br>
Total TX buffers: 356; Total TX buffers busy: 0<br>
<br>
<br>
On 19/03/2012 21:49, Adrian Chadd wrote:
<blockquote cite="mid:4f67a9ec.4105440a.1995.ffffecdf@mx.google.com"
type="cite">Just check the txagg sysctl and mae sure your buffer
count stays up around 512.<br>
<br>
I want to make sure that buffers aren't being leaked.<br>
<br>
Thanks again!<br>
<br>
<span style="font-family:Prelude, Verdana, san-serif;"><br>
<br>
</span><span id="signature">
<div style="font-family: arial, sans-serif; font-size:
12px;color: #999999;">Sent from my Palm Pre on AT&T</div>
<br>
</span><span style="color:navy; font-family:Prelude, Verdana,
san-serif; ">
<hr style="width:75%" align="left">On Mar 19, 2012 2:38 PM,
Vincent Hoffman <a class="moz-txt-link-rfc2396E" href="mailto:vince@unsane.co.uk"><vince@unsane.co.uk></a> wrote: <br>
<br>
Hi Adrian,
<br>
<br>
<br>
This patch is looking good as yet, I've repeated tests that were
<br>
previously causing timeouts and as yet not been able cause a
timeout
<br>
after applying this patch.
<br>
<br>
Its not definitive but so far it appears to have resolved this
issue
<br>
for me.
<br>
<br>
<br>
Regards,
<br>
Vince Hoffman
<br>
</span>
</blockquote>
<br>
</body>
</html>
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