Re: postgresql-performance using sysbench

Ivan Voras wrote:
Kris Kennaway wrote:

Write performance is something that we are working on, expect to hear
about progress over the coming weeks/months.

Do you have some notes or descriptions about what is being worked on?
I'm currently doing some file system benchmarking for internal purposes
and I'm seeing sequential read/write performance nontrivially lower on
FreeBSD+UFS than on Linux+ext3. The Linux combination has ~~20% faster
writes and ~~60% faster reads, on a hardware RAID10 of four 15kRPM
drives, IBM ServeRAID 8 (file system ops / nonsequential are worse -
send me a private message for details). Is the work that's been going on
about lock contention or something at the low levels of the file system?


Rewrite of the lockmgr primitive, for starters. Then we'll see what remains.

Kris

_______________________________________________
freebsd-performance@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-performance
To unsubscribe, send any mail to "freebsd-performance-unsubscribe@xxxxxxxxxxx"