From: Hin-Tak Leung <hintak.leung@gmail.com>
To: andreamrl@tiscali.it
Cc: Florian Zumbiehl <florz@florz.de>,
Larry Finger <Larry.Finger@lwfinger.net>,
herton@mandriva.com.br, htl10@users.sourceforge.net,
linux-wireless@vger.kernel.org
Subject: Re: Power consumption of RTL8187 (driver)/recommendations for low-power USB 802.11 adapter?
Date: Sat, 19 Dec 2009 15:32:14 +0000 [thread overview]
Message-ID: <3ace41890912190732p3e049e20ob7c63d9329352cdc@mail.gmail.com> (raw)
In-Reply-To: <c68f135e0912190230o566b3c3dk9be3038b0602cac5@mail.gmail.com>
On Sat, Dec 19, 2009 at 10:30 AM, Andrea Merello <andreamrl@tiscali.it> wrote:
> Hmm.. Well.. I guess that effectively a USB softmac card on a slow
> computer might produce a noticeable overhead, even if I never tried
> before..
Oh, I have an old machine with a celeron 366Mhz, where I run a zd1211
with the vendor driver as AP.... throughput to a USB disk sharing a
hub something like 430kB/s but can be over 70kB to the the local
non-USB hard disk. (some of the difference in speed is obviously just
data bandwidth contention). There are significant overhead at the USB
level, I think; but in any case, the CPU probably can't sleep because
the USB sub-system is always doing something, if even just for
processing beacons.
next prev parent reply other threads:[~2009-12-19 15:32 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-18 18:02 Power consumption of RTL8187 (driver)/recommendations for low-power USB 802.11 adapter? Florian Zumbiehl
2009-12-18 18:20 ` Larry Finger
2009-12-18 18:59 ` Florian Zumbiehl
2009-12-18 23:28 ` Larry Finger
2009-12-19 0:15 ` Andrea Merello
2009-12-19 1:13 ` Florian Zumbiehl
2009-12-19 10:30 ` Andrea Merello
2009-12-19 15:32 ` Hin-Tak Leung [this message]
2009-12-19 18:44 ` Florian Zumbiehl
2009-12-19 23:31 ` Hin-Tak Leung
2009-12-21 21:27 ` Florian Zumbiehl
2009-12-20 18:43 ` Kalle Valo
2009-12-19 0:37 ` Florian Zumbiehl
2009-12-19 10:19 ` Andrea Merello
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