From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tristan <9p-st@imu.li> To: 9fans@9fans.net Content-Type: text/plain; charset=UTF-8 Message-Id: <2579b9.228186c7.D0Vx.mx@tumtum.plumbweb.net> In-Reply-To: <2579b9.032a3487.pkFh.mx@tumtum.plumbweb.net> References: <2579b6.8126cb52.62GS.mx@tumtum.plumbweb.net> <504d1e9e6a08271d15827ea4c00507ff@chula.quanstro.net> <2579b9.032a3487.pkFh.mx@tumtum.plumbweb.net> Date: Tue, 6 Mar 2012 10:36:02 -0500 User-Agent: mx-alpha Content-Transfer-Encoding: quoted-printable Subject: Re: [9fans] usb slowness Topicbox-Message-UUID: 66c8959c-ead7-11e9-9d60-3106f5b1d025 > 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 --=20 All original matter is hereby placed immediately under the public domain.