random-io benchmarks: FreeBSD Project Launches FreeBSD 6.0 [LWN.net]

random-io benchmarks: FreeBSD Project Launches FreeBSD 6.0

Posted Nov 17, 2005 3:51 UTC (Thu) by NuShrike (guest, #33902)
In reply to: FreeBSD Project Launches FreeBSD 6.0 by nurhussein
Parent article: FreeBSD Project Launches FreeBSD 6.0

My recent benchmarks at work shows that FreeBSD 6.0-stable seems slower than FreeBSD 5.4-stable on the same hardware for random-io.

I used rawio from Ports modified to allow file-reads. It is a custom kernel build from the same conf file.

Compaq DL380 G2 with 2 Pentium III 1.4GHz 512K L2, 2GB ram, 2 36GB raid-1s (OS /, data /usr2)
/dev/da1s1d on /usr2 (ufs, local, noatime, soft-updates)

I run each test 3 times, and take the third result
flushram allocates 1024*1024*1850 of ram before it quits

FreeBSD 5.4-stable
GCC 3.4.2 (gcc -O2)

./FBSD.flushram ; ./FBSD.rawio -v 2 -p 1 -F -f -c 4096 /usr2/blah/blah.dat
Test ID Time KB/sec /sec %User %Sys %Total Reads Writes
RR blah.dat.2048 54.035362 1241.9 303 0.0 1.9 1.9 16384 0
SR blah.dat.2048 0.196668 341229.2 83308 0.0 100.0 100.0 16384 0

FreeBSD 6.0-stable
GCC 3.4.4 (gcc -O2)

./6FBSD.flushram ; ./6FBSD.rawio -v 2 -p 1 -F -f -c 4096 /usr2/blah/blah.dat
Test ID Time KB/sec /sec %User %Sys %Total Reads Writes
RR blah.dat.2048 57.725636 1162.5 284 0.1 1.9 2.0 16384 0
SR blah.dat.2048 0.198070 338813.9 82718 7.4 92.6 100.1 16384 0

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