Date: Sat, 26 Sep 1998 00:32:48 -0600 (MDT) From: "Kenneth D. Merry" <ken@plutotech.com> To: freebsd-alpha@FreeBSD.ORG Cc: gibbs@pluto.plutotech.com, imp@pluto.plutotech.com Subject: one other thing... Message-ID: <199809260632.AAA09812@panzer.plutotech.com>
next in thread | raw e-mail | index | archive | help
Justin and I discovered that write caching was turned off on the 2gig DEC OEM Barracudas that came with the Miata. Enabling write caching improved performance a good bit. To check for that, do this: subway# camcontrol modepage -n da -u 0 -m 8 IC: 0 ABPF: 0 CAP: 0 DISC: 1 SIZE: 0 WCE: 0 MF: 0 RCD: 0 Demand Retention Priority: 0 Write Retention Priority: 0 Disable Pre-fetch Transfer Length: 65535 Minimum Pre-fetch: 0 Maximum Pre-fetch: 65535 Maximum Pre-fetch Ceiling: 65535 Notice that WCE is set to 0. Set it to 1 to enable write caching. You can edit the mode page like this: camcontrol modepage -n da -u 0 -m 8 -P 3 -e Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199809260632.AAA09812>