Date: Sat, 20 Dec 2008 21:59:09 +0000 (GMT)
From: Hin-Tak Leung <hintak_leung@yahoo.co.uk>
Subject: false alarm - Re: throughput problem with rtl8187B within last few days (again)?
To: herton@mandriva.com.br, Larry Finger <Larry.Finger@lwfinger.net>,
	linux-wireless@vger.kernel.org
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Hi,

Am really sorry about the false alarm - apparently doing 
"mke2fs -c -c " on a USB disk on the same hub does very bad things to the throughput of USB wireless device, or rtl8187 specifically. Normal disk usages (copying large files) has no effect at all, so I guess we'll just have to avoid mke2fs or possibly also e2fsck too often :-).

Hin-Tak

--- On Sat, 20/12/08, Hin-Tak Leung <hintak_leung@yahoo.co.uk> wrote:

> From: Hin-Tak Leung <hintak_leung@yahoo.co.uk>
> Subject: throughput problem with rtl8187B within last few days (again)?
> To: herton@mandriva.com.br, "Larry Finger" <Larry.Finger@lwfinger.net>, linux-wireless@vger.kernel.org
> Date: Saturday, 20 December, 2008, 1:32 AM
> Hi,
> 
> I am using v2.6.28-rc8-8109-g6ec77a1 (about 3 days old,
> 2008-12-17/12-18 thereabouts) and transferring some files
> across and the throughput is back to about 50KB/s again -
> should be about 10x - and iwconfig stays at 1Mbit; doing
> iwconfig rate other numbers doesn't change anything.
> 
> I am tracking wireless testing quite regularly so if it
> breaks, the breakage hasn't been more than a week, I
> think; one thing I am not sure about is that I am running
> "mke2fs -c -c " on a USB disk on the same hub (it
> is a laptop so it is a "logical" hub) at the
> moment. So I am wondering if anything breaks in the last few
> days, or other USB activities can seriously affect the
> driver. 
> 
> I'll try again and write again when the mke2fs -c -c
> finishes (about 30 hours for 250GB). Meanwhile, either of
> you want to say anything?
> 
> Hin-Tak