From: Tristan <9p-st@imu.li>
To: 9fans@9fans.net
Subject: Re: [9fans] usb slowness
Date: Tue, 6 Mar 2012 10:36:02 -0500 [thread overview]
Message-ID: <2579b9.228186c7.D0Vx.mx@tumtum.plumbweb.net> (raw)
In-Reply-To: <2579b9.032a3487.pkFh.mx@tumtum.plumbweb.net>
> my working theory is that i'm getting all the interrupts, but not soon
> enough... the fascinating piece is that the olpc and the pc with intel
> ehc take just about the same amount of time.
indeed, if i set the interrupt threshold control to 1 micro-frame (they
default to 8), i get 10-11 sec dd, say, half as slow. and ping time to my
switch is half. and i can get about twice the throughput from the file
server, which is still kinda slow.
(hget yields about 6Mbit over a 100Mbit link)
tristan
--
All original matter is hereby placed immediately under the public domain.
next prev parent reply other threads:[~2012-03-06 15:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-04 1:56 Tristan
2012-03-05 15:46 ` erik quanstrom
2012-03-05 16:05 ` Richard Miller
2012-03-05 16:14 ` erik quanstrom
2012-03-05 16:20 ` Richard Miller
2012-03-06 13:19 ` Tristan
2012-03-06 15:36 ` Tristan [this message]
2012-03-06 16:10 ` Richard Miller
2012-03-06 18:55 ` erik quanstrom
2012-03-06 22:22 ` Tristan
2012-03-07 5:50 ` Tristan
2012-03-07 5:53 ` Tristan
2012-03-07 9:31 ` Charles Forsyth
2012-03-10 3:13 ` [9fans] donehead changed before ack Tristan
2012-03-10 12:33 ` erik quanstrom
2012-03-10 15:14 ` Tristan
2012-03-07 15:27 ` [9fans] usb slowness Richard Miller
2012-03-05 15:56 ` Richard Miller
2012-03-06 0:01 ` Tristan
2012-03-06 10:39 ` Richard Miller
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