Date: Fri, 21 Jul 2000 16:30:44 -0700 (PDT) From: Jin Guojun (DSD staff) <jin@george.lbl.gov> To: ken@kdm.org Cc: freebsd-hardware@FreeBSD.ORG, jhartley@netrail.net, mjacob@feral.com Subject: Re: SysKonnect and Intel gig boards Message-ID: <200007212330.e6LNUiH06944@portnoy.lbl.gov>
next in thread | raw e-mail | index | archive | help
I will install a current host and test it sometime next week. Thanks, -Jin > On Mon, Jul 10, 2000 at 18:30:11 -0600, Kenneth D. Merry wrote: > > On Mon, Jul 10, 2000 at 16:56:16 -0700, Jin Guojun wrote: > > > (2) chewing significant CPU: (tested on completely idle machines) > > > 500 MHz P-III + single NetGear A620 I/O > > > takes 47% CPU time > > > > > > 750 MHz AMD K7 + single NetGear A620 I/O > > > takes less 10% CPU > > > > > > 500 MHz P-III + single SysKonnect I/O > > > takes less 5% CPU > > > > What benchmark are you running and what size packets are you using? > > > > I think I mentioned to you before that the driver is probably tuned for > > 9000 byte packets, and you might need to tweak things somewhat to get > > better performance with 1500 byte packets. > > Another parameter to try is enabling transmit flow control. > > The attached patch should do it for the -current driver, I think. > > I haven't really tested this to see what effect it has, and it'll only work > with Tigon II boards. (The Netgear board is a Tigon II board.) > > Ken > -- > Kenneth Merry > ken@kdm.org > > --0OAP2g/MAC+5xKAE > Content-Type: text/plain; charset=us-ascii > Content-Disposition: attachment; filename="if_ti.c.flow_control.20000721" > > ==== //depot/FreeBSD-current/src/sys/pci/if_ti.c#27 - /a/ken/perforce/FreeBSD-cu > rrent/src/sys/pci/if_ti.c ==== > *** /tmp/tmp.61653.0 Fri Jul 21 16:50:09 2000 > --- /a/ken/perforce/FreeBSD-current/src/sys/pci/if_ti.c Fri Jul 21 16:49:57 2000 > *************** > *** 2320,2327 **** > --- 2320,2329 ---- > case IFM_AUTO: > CSR_WRITE_4(sc, TI_GCR_GLINK, TI_GLNK_PREF|TI_GLNK_1000MB| > TI_GLNK_FULL_DUPLEX|TI_GLNK_RX_FLOWCTL_Y| > + TI_GLNK_TX_FLOWCTL_Y| > TI_GLNK_AUTONEGENB|TI_GLNK_ENB); > CSR_WRITE_4(sc, TI_GCR_LINK, TI_LNK_100MB|TI_LNK_10MB| > + TI_LNK_TX_FLOWCTL_Y|TI_LNK_RX_FLOWCTL_Y| > TI_LNK_FULL_DUPLEX|TI_LNK_HALF_DUPLEX| > TI_LNK_AUTONEGENB|TI_LNK_ENB); > TI_DO_CMD(TI_CMD_LINK_NEGOTIATION, > > --0OAP2g/MAC+5xKAE-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200007212330.e6LNUiH06944>