Thread (4 messages) 4 messages, 2 authors, 2011-05-26

Re: [PATCH] iwlagn: use cts-to-self protection on 5000 adapters series

From: Stanislaw Gruszka <hidden>
Date: 2011-05-26 11:18:16

On Wed, May 25, 2011 at 07:13:26AM -0700, wwguy wrote:
On Wed, 2011-05-25 at 05:33 -0700, Stanislaw Gruszka wrote:
quoted
after some time, performance downgrade to unpached driver level, like
                                         unpatched?
quoted
However patch still make better here, since similar test on unpached
                                                          unpatched?
I'll fix that.
quoted
+	/*
+	 * force CTS-to-self frames protection if RTS-CTS is not preferred
+	 * one aggregation protection method
             on?
The sentence is not the best English, but replacing "one" to "on" will
not help, I think.
if I remember correctly, the RTS/CTS was added to fix 6000 performance
issue 2 years ago. Did you see the similar performance downgrade issue
on other devices beside 5000?
No, I think only 5000 ware afected (also with random connection hangs).
Patching and using cts-to-self on 6000, give slightly better performance
here with 6300 adapter:

vanilla 6300 5Ghz: 8.13 8.03 8.13 8.03 8.19 avr 8.1020 std 0.070143
patched 6300 5Ghz: 8.60 8.59 8.60 8.41 8.57 avr 8.5540 std 0.081425

vanilla 6300 2GHz: 4.06 4.39 4.60 4.70 4.80 avr 4.5100 std 0.293770
patched 6300 2GHz: 4.94 4.90 4.94 5.05 4.88 avr 4.9420 std 0.065727

I plan to do more testing, but not yet (except 5000 adapters I have
quite good performance).

Stanislaw
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