Re: [ewg] [PATCH] ipoib: Fix lockup of the tx queue

2010-03-11 Thread Ralph Campbell
On Thu, 2010-03-11 at 13:38 -0800, Roland Dreier wrote:
 good debugging, applied thanks.
 
 I do worry (as Moni mentioned) that this doesn't explain why you would
 get send failures in this case, but the patch itself is well-explained
 and looks obviously correct so I think we should apply it.

Well, after more testing it seems there may still be a problem.
I haven't isolated it yet though. I could definitely use help
reviewing the code changes.

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Re: [ewg] [PATCH] ipoib: Fix lockup of the tx queue

2010-03-11 Thread Ralph Campbell
Sorry, I was referring to my patch not Eli's.

On Thu, 2010-03-11 at 13:41 -0800, Ralph Campbell wrote:
 On Thu, 2010-03-11 at 13:38 -0800, Roland Dreier wrote:
  good debugging, applied thanks.
  
  I do worry (as Moni mentioned) that this doesn't explain why you would
  get send failures in this case, but the patch itself is well-explained
  and looks obviously correct so I think we should apply it.
 
 Well, after more testing it seems there may still be a problem.
 I haven't isolated it yet though. I could definitely use help
 reviewing the code changes.
 
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Re: [ewg] [PATCH] ipoib: Fix lockup of the tx queue

2010-03-11 Thread Roland Dreier
  Sorry, I was referring to my patch not Eli's.

Heh, I never would have said anything about your patch was obvious.
I skimmed yours once but I do want to read it more carefully.

Did you ever say what test case you are using to provoke the problem you're 
fixing?
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Re: [ewg] [PATCH] ipoib: Fix lockup of the tx queue

2010-03-11 Thread Ralph Campbell
On Thu, 2010-03-11 at 13:52 -0800, Roland Dreier wrote:
  Sorry, I was referring to my patch not Eli's.
 
 Heh, I never would have said anything about your patch was obvious.
 I skimmed yours once but I do want to read it more carefully.
 
 Did you ever say what test case you are using to provoke the problem you're 
 fixing?

I think I did but it is just UDP stress tests in general.
Throwing in some link failures and switching between connected
and datagram modes helps too. netperf, qperf, etc. should work.
Anything which causes the connected mode QP to fail should
exercise the fix too.

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