some new test results that may be interesting:

disk-to-disk copy, ``time cp bigfile bigfile2'' where
``bigfile'' is as large as 128MB.

test machine: pIII-800 / 256MB / IBM DTLA ATA harddisk

TEST 1: NetBSD-1.5.1 (options BUFPAGES=16384)

first run:	64.4s real
second run:	63.8s real

TEST 2: NetBSD-1.5X (UBC, prior to Chuck's UVM updates)

first run:	64.6s real
second run:	36.3s real

TEST 3: NetBSD-1.5Y (UBC, with Chuck's UVM updates, dirpref)

first run:	63.3s real
second run:	 8.5s real

TEST 4: FreeBSD 4.3-RC5

first run:	18.3s real
second run:	18.9s real

TEST 5: Linux 2.2.19

first run:	17.2s real
second run:	17.0s real

the bufcache performance with 1.5Y is very impressive.

-- mauzi

Gergely EGERVARY
System Administrator
Business Polytechnic, HUNGARY