Sunday, May 18, 2008

Linus, Jeff and Beer



And the outcome? Well, I guess we have to wait a little bit longer...

Friday, May 16, 2008

uperf - benchmarking network

"Heard of filebench? Want something similar for networking? Look no further! Today we opensourced uperf, a tool to benchmark networking performance. uperf, just like its cousin filebench,1 is a framework that takes a description of a workload/application (called a profile), and generates load to match the profile. uperf is quite heavily used by the performance groups at Sun to study networking performance."
Read More.

Wednesday, May 14, 2008

ZFS WriteThrottling

ZFS had a problem with properly throttling intensive writers like a simple dd if=/dev/null of=/zfs/file which would usually produce "jumpy" writes instead os steady write stream. There is a new way of throttling in ZFS which should solve the problem - I have not tested it yet. The new code was integrated into build 87. Roch has posted a good explanation of the old and the new behavior.