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    SubjectRe: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci
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    El lun, 25-05-2009 a las 13:23 +0200, Ivo van Doorn escribió:
    > On Monday 25 May 2009, Alejandro Riveira Fernández wrote:
    > > I reported it previously but i'm resending it as a regresion
    > >
    > > More info on the bugzilla
    > >
    > > http://bugzilla.kernel.org/show_bug.cgi?id=13362
    > >
    > > I bisected it in the estable tree (it regresses too) and the revert
    > > helps there but reverting the upstream commit in mainline does not help
    > > to fix it completely...
    >
    > Bug 9273 - rt2500pci: low TCP throughput
    > http://bugzilla.kernel.org/show_bug.cgi?id=9273
    >
    > Bug 443203 - Fedora rawhide + ralink = slow bit rate
    > https://bugzilla.redhat.com/show_bug.cgi?id=443203
    >
    > [Hardy][Intrepid] Low bandwidth with rt2400 / rt2500 drivers
    > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/190515
    >
    > I can't call this a regression, dozens people have reported the problems
    > ranging from kernels 2.6.25 to 2.6.29. Perhaps in your case it worked slightly
    > better once, but that was not the case for all other users.
    >
    > Have you tried the "iwconfig wlan0 rate54M" workaround?

    Yep during various releases I used that workaround but once I
    switched to minstrel rate choosing alg (that's the neme isn't it) the
    problem gone away and i got allways a good connection for several
    releases and many kernels tried; till this patch. If I revert this patch
    the problem goes away completly and reliably (i'm using 2.6.29.4 with
    the patch reveted) so something has clearly regressed for me.

    You can see my coments ( ariveira ) on rt2x00 forums regarding the
    issues you mention (low speed that gets fixed forcing the rate) in the
    long thread about rt2500pci low rate[1].

    Checking the message i see that it was 2.6.27 when i began using
    minstrel and got a rock solid connection in 2.6.27.x, 2.6.28.x and
    2.6.29 minus 64e1b00c974ddeae6a60ebb02e1c487371905cea

    The problem is not that I get a low rate on connect (1Mbit) that i can
    easily fix with iwconfig the problem is that with 54M (and 48M and the
    like) connections I get a bumpy and low speed connection.

    So I honesty think it is not the same issue and I hope you read this as
    an interesting data point and not just as a duplicate.

    Would the output of this script[2] for 2.6.29.4 with and without the
    revert help you ?

    >
    > Ivo

    Thanks for the response

    [1]
    http://rt2x00.serialmonkey.com/phpBB/viewtopic.php?f=5&t=4579&start=45

    [2] http://rt2x00.serialmonkey.com/phpBB/viewtopic.php?f=5&t=4660
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