From: Karl Hiramoto <karl@hiramoto.org>
To: "Philip A. Prindeville" <philipp_subx@redfish-solutions.com>
Cc: netdev@vger.kernel.org, linux-atm-general@lists.sourceforge.net
Subject: Re: [Linux-ATM-General] [PATCH] atm/br2684: netif_stop_queue() when atm device busy and netif_wake_queue() when we can send packets again.
Date: Thu, 10 Sep 2009 23:30:44 +0200 [thread overview]
Message-ID: <4AA97004.2010904@hiramoto.org> (raw)
In-Reply-To: <4AA95838.4010007@redfish-solutions.com>
Philip A. Prindeville wrote:
> I had noticed that with my Solos card, and using Qwest 7062/896kb/s
> service that I was typically only getting ~400kb/s upstream, so I
> thought that delayed transmitter restarts might be the culprit and
> decided to try out this patch.
>
> I'm running 2.6.27.26, and I modified the patch as below.
>
> Has anyone confirmed this patch (Karl's) against 2.6.27?
>
> Thanks,
>
> -Philip
I'd be interested in hearing comparisons with/without the patch. What
i have is no upstream packet loss with this patch, however slightly
lower total throughput. I think because the upper networking layers
take time to restart the packet flow. I'm not really sure if or how
many packets to upper layers buffer. I haven't had time to debug it
further.
I don't have a solos card, but you may have to tweak the solos driver
sk_sndbuf value.
--
Karl
next prev parent reply other threads:[~2009-09-10 21:30 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-28 10:38 [PATCH] br2684 testing needed for packet loss and performance Karl Hiramoto
2009-08-28 12:25 ` [Linux-ATM-General] " Chas Williams (CONTRACTOR)
2009-08-29 10:24 ` Karl Hiramoto
2009-08-29 11:24 ` [PATCH] atm/br2684: netif_stop_queue() when atm device busy and netif_wake_queue() when we can send packets again Karl Hiramoto
2009-08-31 14:29 ` Chas Williams (CONTRACTOR)
2009-09-03 6:27 ` David Miller
2009-09-03 13:44 ` Chas Williams (CONTRACTOR)
2009-09-10 19:49 ` [Linux-ATM-General] " Philip A. Prindeville
2009-09-10 21:30 ` Karl Hiramoto [this message]
2009-09-11 18:48 ` David Miller
2009-09-15 13:44 ` Karl Hiramoto
2009-09-15 14:57 ` Karl Hiramoto
2009-09-16 18:04 ` Philip A. Prindeville
2009-09-11 19:56 ` Philip A. Prindeville
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