Friday, May 16, 2008
"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 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.