kern/166190: [ath] TX hangs and frames stuck in TX queue

Mon Mar 19 22:20:15 UTC 2012

The following reply was made to PR kern/166190; it has been noted by GNATS.

From: Vincent Hoffman <vince at unsane.co.uk>
To: Adrian Chadd <adrian.chadd at gmail.com>
Cc: "bug-followup at freebsd.org" <bug-followup at freebsd.org>
Subject: Re: kern/166190: [ath] TX hangs and frames stuck in TX queue
Date: Mon, 19 Mar 2012 22:10:57 +0000

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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 at 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

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     During an iperf test<br>
     Total TX buffers went fromÂ  512 -&gt; 356)<br>
     <br>
     iperf output (tcp, sending form freebsd machine to osx laptop [Â  4]Â 
     0.0-60.2 secÂ Â  154 MBytesÂ  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>
     Â 0:Â Â Â Â Â Â Â Â Â  0Â  1:Â Â Â Â Â Â Â Â Â  0Â  2:Â Â Â Â Â Â  7811Â  3:Â Â Â Â Â Â  5690 <br>
     Â 4:Â Â Â Â Â Â  5077Â  5:Â Â Â Â Â Â  4509Â  6:Â Â Â Â Â Â  4675Â  7:Â Â Â Â Â Â  4546 <br>
     Â 8:Â Â Â Â Â Â  5255Â  9:Â Â Â Â Â Â  5061 10:Â Â Â Â Â Â  4796 11:Â Â Â Â Â Â  9393 <br>
     12:Â Â Â Â Â Â  3094 13:Â Â Â Â Â Â  2604 14:Â Â Â Â Â Â  2647 15:Â Â Â Â Â Â  2301 <br>
     16:Â Â Â Â Â Â  4372 17:Â Â Â Â Â Â  2440 18:Â Â Â Â Â Â  4558 19:Â Â Â Â Â Â  8300 <br>
     20:Â Â Â Â Â Â  6962 21:Â Â Â Â Â Â  4679 22:Â Â Â Â Â Â  2404 23:Â Â Â Â Â Â  1270 <br>
     24:Â Â Â Â Â Â  1076 25:Â Â Â Â Â Â Â  929 26:Â Â Â Â Â Â Â  866 27:Â Â Â Â Â Â Â  856 <br>
     28:Â Â Â Â Â Â Â  835 29:Â Â Â Â Â Â Â  895 30:Â Â Â Â Â Â  1033 31:Â Â Â Â Â Â  1016 <br>
     32:Â Â Â Â Â  10037 33:Â Â Â Â Â Â Â Â Â  0 34:Â Â Â Â Â Â Â Â Â  0 35:Â Â Â Â Â Â Â Â Â  0 <br>
     36:Â Â Â Â Â Â Â Â Â  0 37:Â Â Â Â Â Â Â Â Â  0 38:Â Â Â Â Â Â Â Â Â  0 39:Â Â Â Â Â Â Â Â Â  0 <br>
     40:Â Â Â Â Â Â Â Â Â  0 41:Â Â Â Â Â Â Â Â Â  0 42:Â Â Â Â Â Â Â Â Â  0 43:Â Â Â Â Â Â Â Â Â  0 <br>
     44:Â Â Â Â Â Â Â Â Â  0 45:Â Â Â Â Â Â Â Â Â  0 46:Â Â Â Â Â Â Â Â Â  0 47:Â Â Â Â Â Â Â Â Â  0 <br>
     48:Â Â Â Â Â Â Â Â Â  0 49:Â Â Â Â Â Â Â Â Â  0 50:Â Â Â Â Â Â Â Â Â  0 51:Â Â Â Â Â Â Â Â Â  0 <br>
     52:Â Â Â Â Â Â Â Â Â  0 53:Â Â Â Â Â Â Â Â Â  0 54:Â Â Â Â Â Â Â Â Â  0 55:Â Â Â Â Â Â Â Â Â  0 <br>
     56:Â Â Â Â Â Â Â Â Â  0 57:Â Â Â Â Â Â Â Â Â  0 58:Â Â Â Â Â Â Â Â Â  0 59:Â Â Â Â Â Â Â Â Â  0 <br>
     60:Â Â Â Â Â Â Â Â Â  0 61:Â Â Â Â Â Â Â Â Â  0 62:Â Â Â Â Â Â Â Â Â  0 63:Â Â Â Â Â Â Â Â Â  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>
     Â 0:Â Â Â Â Â Â Â Â Â  0Â  1:Â Â Â Â Â Â Â Â Â  0Â  2:Â Â Â Â Â Â  7931Â  3:Â Â Â Â Â Â  5744 <br>
     Â 4:Â Â Â Â Â Â  5116Â  5:Â Â Â Â Â Â  4554Â  6:Â Â Â Â Â Â  4716Â  7:Â Â Â Â Â Â  4577 <br>
     Â 8:Â Â Â Â Â Â  5284Â  9:Â Â Â Â Â Â  5097 10:Â Â Â Â Â Â  4822 11:Â Â Â Â Â Â  9425 <br>
     12:Â Â Â Â Â Â  3123 13:Â Â Â Â Â Â  2628 14:Â Â Â Â Â Â  2671 15:Â Â Â Â Â Â  2322 <br>
     16:Â Â Â Â Â Â  5036 17:Â Â Â Â Â Â  2442 18:Â Â Â Â Â Â  4558 19:Â Â Â Â Â Â  8300 <br>
     20:Â Â Â Â Â Â  6962 21:Â Â Â Â Â Â  4679 22:Â Â Â Â Â Â  2404 23:Â Â Â Â Â Â  1270 <br>
     24:Â Â Â Â Â Â  1076 25:Â Â Â Â Â Â Â  929 26:Â Â Â Â Â Â Â  866 27:Â Â Â Â Â Â Â  856 <br>
     28:Â Â Â Â Â Â Â  835 29:Â Â Â Â Â Â Â  895 30:Â Â Â Â Â Â  1033 31:Â Â Â Â Â Â  1016 <br>
     32:Â Â Â Â Â  10037 33:Â Â Â Â Â Â Â Â Â  0 34:Â Â Â Â Â Â Â Â Â  0 35:Â Â Â Â Â Â Â Â Â  0 <br>
     36:Â Â Â Â Â Â Â Â Â  0 37:Â Â Â Â Â Â Â Â Â  0 38:Â Â Â Â Â Â Â Â Â  0 39:Â Â Â Â Â Â Â Â Â  0 <br>
     40:Â Â Â Â Â Â Â Â Â  0 41:Â Â Â Â Â Â Â Â Â  0 42:Â Â Â Â Â Â Â Â Â  0 43:Â Â Â Â Â Â Â Â Â  0 <br>
     44:Â Â Â Â Â Â Â Â Â  0 45:Â Â Â Â Â Â Â Â Â  0 46:Â Â Â Â Â Â Â Â Â  0 47:Â Â Â Â Â Â Â Â Â  0 <br>
     48:Â Â Â Â Â Â Â Â Â  0 49:Â Â Â Â Â Â Â Â Â  0 50:Â Â Â Â Â Â Â Â Â  0 51:Â Â Â Â Â Â Â Â Â  0 <br>
     52:Â Â Â Â Â Â Â Â Â  0 53:Â Â Â Â Â Â Â Â Â  0 54:Â Â Â Â Â Â Â Â Â  0 55:Â Â Â Â Â Â Â Â Â  0 <br>
     56:Â Â Â Â Â Â Â Â Â  0 57:Â Â Â Â Â Â Â Â Â  0 58:Â Â Â Â Â Â Â Â Â  0 59:Â Â Â Â Â Â Â Â Â  0 <br>
     60:Â Â Â Â Â Â Â Â Â  0 61:Â Â Â Â Â Â Â Â Â  0 62:Â Â Â Â Â Â Â Â Â  0 63:Â Â Â Â Â Â Â Â Â  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>
     Â 0:Â Â Â Â Â Â Â Â Â  0Â  1:Â Â Â Â Â Â Â Â Â  0Â  2:Â Â Â Â Â Â  8187Â  3:Â Â Â Â Â Â  5884 <br>
     Â 4:Â Â Â Â Â Â  5230Â  5:Â Â Â Â Â Â  4653Â  6:Â Â Â Â Â Â  4801Â  7:Â Â Â Â Â Â  4649 <br>
     Â 8:Â Â Â Â Â Â  5347Â  9:Â Â Â Â Â Â  5168 10:Â Â Â Â Â Â  4891 11:Â Â Â Â Â Â  9496 <br>
     12:Â Â Â Â Â Â  3305 13:Â Â Â Â Â Â  2715 14:Â Â Â Â Â Â  2753 15:Â Â Â Â Â Â  2399 <br>
     16:Â Â Â Â Â Â  7473 17:Â Â Â Â Â Â  2464 18:Â Â Â Â Â Â  4565 19:Â Â Â Â Â Â  8304 <br>
     20:Â Â Â Â Â Â  6966 21:Â Â Â Â Â Â  4681 22:Â Â Â Â Â Â  2405 23:Â Â Â Â Â Â  1270 <br>
     24:Â Â Â Â Â Â  1077 25:Â Â Â Â Â Â Â  929 26:Â Â Â Â Â Â Â  866 27:Â Â Â Â Â Â Â  856 <br>
     28:Â Â Â Â Â Â Â  835 29:Â Â Â Â Â Â Â  895 30:Â Â Â Â Â Â  1033 31:Â Â Â Â Â Â  1016 <br>
     32:Â Â Â Â Â  10037 33:Â Â Â Â Â Â Â Â Â  0 34:Â Â Â Â Â Â Â Â Â  0 35:Â Â Â Â Â Â Â Â Â  0 <br>
     36:Â Â Â Â Â Â Â Â Â  0 37:Â Â Â Â Â Â Â Â Â  0 38:Â Â Â Â Â Â Â Â Â  0 39:Â Â Â Â Â Â Â Â Â  0 <br>
     40:Â Â Â Â Â Â Â Â Â  0 41:Â Â Â Â Â Â Â Â Â  0 42:Â Â Â Â Â Â Â Â Â  0 43:Â Â Â Â Â Â Â Â Â  0 <br>
     44:Â Â Â Â Â Â Â Â Â  0 45:Â Â Â Â Â Â Â Â Â  0 46:Â Â Â Â Â Â Â Â Â  0 47:Â Â Â Â Â Â Â Â Â  0 <br>
     48:Â Â Â Â Â Â Â Â Â  0 49:Â Â Â Â Â Â Â Â Â  0 50:Â Â Â Â Â Â Â Â Â  0 51:Â Â Â Â Â Â Â Â Â  0 <br>
     52:Â Â Â Â Â Â Â Â Â  0 53:Â Â Â Â Â Â Â Â Â  0 54:Â Â Â Â Â Â Â Â Â  0 55:Â Â Â Â Â Â Â Â Â  0 <br>
     56:Â Â Â Â Â Â Â Â Â  0 57:Â Â Â Â Â Â Â Â Â  0 58:Â Â Â Â Â Â Â Â Â  0 59:Â Â Â Â Â Â Â Â Â  0 <br>
     60:Â Â Â Â Â Â Â Â Â  0 61:Â Â Â Â Â Â Â Â Â  0 62:Â Â Â Â Â Â Â Â Â  0 63:Â Â Â Â Â Â Â Â Â  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>
     Â 0:Â Â Â Â Â Â Â Â Â  0Â  1:Â Â Â Â Â Â Â Â Â  0Â  2:Â Â Â Â Â Â  8360Â  3:Â Â Â Â Â Â  5998 <br>
     Â 4:Â Â Â Â Â Â  5304Â  5:Â Â Â Â Â Â  4703Â  6:Â Â Â Â Â Â  4846Â  7:Â Â Â Â Â Â  4701 <br>
     Â 8:Â Â Â Â Â Â  5377Â  9:Â Â Â Â Â Â  5216 10:Â Â Â Â Â Â  4935 11:Â Â Â Â Â Â  9544 <br>
     12:Â Â Â Â Â Â  3383 13:Â Â Â Â Â Â  2753 14:Â Â Â Â Â Â  2811 15:Â Â Â Â Â Â  2441 <br>
     16:Â Â Â Â Â Â  8822 17:Â Â Â Â Â Â  2474 18:Â Â Â Â Â Â  4566 19:Â Â Â Â Â Â  8304 <br>
     20:Â Â Â Â Â Â  6966 21:Â Â Â Â Â Â  4681 22:Â Â Â Â Â Â  2406 23:Â Â Â Â Â Â  1270 <br>
     24:Â Â Â Â Â Â  1077 25:Â Â Â Â Â Â Â  929 26:Â Â Â Â Â Â Â  866 27:Â Â Â Â Â Â Â  856 <br>
     28:Â Â Â Â Â Â Â  835 29:Â Â Â Â Â Â Â  895 30:Â Â Â Â Â Â  1033 31:Â Â Â Â Â Â  1016 <br>
     32:Â Â Â Â Â  10037 33:Â Â Â Â Â Â Â Â Â  0 34:Â Â Â Â Â Â Â Â Â  0 35:Â Â Â Â Â Â Â Â Â  0 <br>
     36:Â Â Â Â Â Â Â Â Â  0 37:Â Â Â Â Â Â Â Â Â  0 38:Â Â Â Â Â Â Â Â Â  0 39:Â Â Â Â Â Â Â Â Â  0 <br>
     40:Â Â Â Â Â Â Â Â Â  0 41:Â Â Â Â Â Â Â Â Â  0 42:Â Â Â Â Â Â Â Â Â  0 43:Â Â Â Â Â Â Â Â Â  0 <br>
     44:Â Â Â Â Â Â Â Â Â  0 45:Â Â Â Â Â Â Â Â Â  0 46:Â Â Â Â Â Â Â Â Â  0 47:Â Â Â Â Â Â Â Â Â  0 <br>
     48:Â Â Â Â Â Â Â Â Â  0 49:Â Â Â Â Â Â Â Â Â  0 50:Â Â Â Â Â Â Â Â Â  0 51:Â Â Â Â Â Â Â Â Â  0 <br>
     52:Â Â Â Â Â Â Â Â Â  0 53:Â Â Â Â Â Â Â Â Â  0 54:Â Â Â Â Â Â Â Â Â  0 55:Â Â Â Â Â Â Â Â Â  0 <br>
     56:Â Â Â Â Â Â Â Â Â  0 57:Â Â Â Â Â Â Â Â Â  0 58:Â Â Â Â Â Â Â Â Â  0 59:Â Â Â Â Â Â Â Â Â  0 <br>
     60:Â Â Â Â Â Â Â Â Â  0 61:Â Â Â Â Â Â Â Â Â  0 62:Â Â Â Â Â Â Â Â Â  0 63:Â Â Â Â Â Â Â Â Â  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 at 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&amp;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 at unsane.co.uk">&lt;vince at unsane.co.uk&gt;</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>
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