On Sat, Oct 02, 2010 at 01:18:20PM -0700, Rumen Telbizov wrote:
> Hello everyone,
>
> Here's the requested information below:
The tunings between your Linux and FreeBSD instances differ severely,
and some of the variables don't even exist any longer (example:
table_cache is now known as table_open_cache as of MySQL 5.1.3, and
probably key_buffer vs. key_buffer_size too).
Can you please rule out MySQL tunings being responsible for the problem?
Here are your configuration bits, more sanely written:
FreeBSD Linux
-------------------------- -------------- ------------------
MySQL version 5.1.51 5.1.50
-------------------------- -------------- ------------------
my.cnf tuning FreeBSD Linux
-------------------------- -------------- ------------------
key_buffer_size 8 GB ????
key_buffer ???? 4 GB
max_allowed_packet 16 MB 1 MB
table_open_cache 2048 ????
table_cache ???? 64
sort_buffer_size 64 MB 512 KB
read_buffer_size 8 MB 256 KB
read_rnd_buffer_size 16 MB 512 KB
net_buffer_length ???? 8 KB
myisam_sort_buffer_size 256 MB 8 MB
thread_cache_size 64 ????
query_cache_size 32 MB ????
thread_concurrency 8 ????
max_heap_table_size 6 GB 6 GB
-------------------------- -------------- ------------------
Can you also please provide "top" output for the mysqld process on
FreeBSD?
> * As for the ZFS. Here's the pool configuration:
If you move things to UFS2, does the problem disappear?
You might not be seeing any disk I/O on the filesystem with gstat
because ZFS ARC could have all of the data in it.
--
| Jeremy Chadwick j...@parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. PGP: 4BD6C0CB |
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