chris@mimsy.UUCP (Chris Torek) (05/10/87)
In article <161@auvax.UUCP> rwa@auvax.UUCP writes: >Ok, I just did that. "dump 0f /dev/null /dev/rra1h & iostat 1". >... Iostat reported average transfer rates in the 290 Kb/s to >350 Kb/s range. /dev/ra1h is an 8k/1k filesystem of about 360 >megabytes. The main hack here was to set the burst-transfer counts >higher. I reran my statistics, since I think my old 130K/s max was with the hardware default DMA burst rate. On a Vax 8600 running 4.3BSD-beta-plus and the driver I posted in April, with the UDA50 on its own Unibus (the standard 8600 configuration), I got 150 to 220 KB/s. We have 4K/512 filesystems, though, which explains the difference. >... how did you get your eagles to go so fast? Well, I did use tunefs, but nothing else special. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690) Domain: chris@mimsy.umd.edu Path: seismo!mimsy!chris