Re: ZFS Re: A specific example of a disk i/o problem

2009-10-05 Thread Thomas Backman
On Oct 5, 2009, at 6:05 PM, Dieter wrote: In message , Thomas Backman writes: I run 8.0-RC1/amd64 with ZFS on an A64 3200+ with 2GB RAM and an old 80GB 7200rpm disk. My problem is that I get completely unacceptable latency on console IO (both via SSH and serial console) when the system i

tuning FFS for large files Re: A specific example of a disk i/o problem

2009-10-05 Thread Dieter
I found a clue! The problem occurs with my big data partitions, which are newfs-ed with options intended to improve things. Reading a large file from the normal ad4s5b partition only delays other commands slightly, as expected. Reading a large file from the tuned ad4s11 partition yields the dela

ZFS Re: A specific example of a disk i/o problem

2009-10-05 Thread Dieter
In message , Thomas Backman writes: > I run 8.0-RC1/amd64 with ZFS on an A64 3200+ with 2GB RAM and an old > 80GB 7200rpm disk. > > My problem is that I get completely unacceptable latency on console IO > (both via SSH and serial console) when the system is performing disk > IO. The worst

Re: MySQL and PostgreSQL benchmarks, FreeBSD 7 vs. 8

2009-10-05 Thread Pieter de Goeje
On Monday 05 October 2009 12:45:50 György Vilmos wrote: > Hello, > > I have two new articles: > First, MySQL history, which takes some older (major) versions from MySQL > and shows their performance on FreeBSD 8: > http://suckit.blog.hu/2009/10/03/mysql_history > > and an article, which compares Po

MySQL and PostgreSQL benchmarks, FreeBSD 7 vs. 8

2009-10-05 Thread György Vilmos
Hello, I have two new articles: First, MySQL history, which takes some older (major) versions from MySQL and shows their performance on FreeBSD 8: http://suckit.blog.hu/2009/10/03/mysql_history and an article, which compares PostgreSQL and MySQL performance between FreeBSD 7 and 8: http://suckit.

Re: A specific example of a disk i/o problem

2009-10-05 Thread Thomas Backman
(Note: I hope this reply shows up correctly. I subscribed to the mailing list after the fact and had to "forge" the subject line.) Hey everyone, I'm having serious trouble with the same thing, and just found this thread while looking for the correct place to post. Looks like I found it. (I