[zfs-discuss] DBMS on zpool

2007-05-18 Thread homerun
Hi

Just playing around with zfs , trying to locate DBMS data files to zpool.
DBMS i mean here are oracle and informix.
currently noticed that read operations perfomance is excelent but all write 
operations are not and also write operations performance variates a lot.
My quess for not so good write performance and write performance variation is 
double buffering , DBMS buffers and zfs caching. together.
Have anyone seen or tested best practices how should DBMS setup be 
implemented using zpool ; zfs or zvol.

Thanks
 
 
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RE: [zfs-discuss] DBMS on zpool

2007-05-18 Thread Ellis, Mike

This is probably a good place to start.

http://blogs.sun.com/realneel/entry/zfs_and_databases

Please post back to the group with your results, I'm sure many of us are
interested.

Thanks,

 -- MikeE

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Subject: [zfs-discuss] DBMS on zpool


Hi

Just playing around with zfs , trying to locate DBMS data files to
zpool.
DBMS i mean here are oracle and informix.
currently noticed that read operations perfomance is excelent but all
write operations are not and also write operations performance variates
a lot.
My quess for not so good write performance and write performance
variation is double buffering , DBMS buffers and zfs caching. together.
Have anyone seen or tested best practices how should DBMS setup be
implemented using zpool ; zfs or zvol.

Thanks
 
 
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Re: [zfs-discuss] DBMS on zpool

2007-05-18 Thread Richard Elling

homerun wrote:

Hi

Just playing around with zfs , trying to locate DBMS data files to zpool.
DBMS i mean here are oracle and informix.
currently noticed that read operations perfomance is excelent but all write 
operations are not and also write operations performance variates a lot.
My quess for not so good write performance and write performance variation is 
double buffering , DBMS buffers and zfs caching. together.
Have anyone seen or tested best practices how should DBMS setup be 
implemented using zpool ; zfs or zvol.


Neel has spent some time on this topic.  I'd start with his blog.
http://blogs.sun.com/realneel

Additional blogs to check are Roch's and Bob Sneed, for discussions
on caching and direct I/O.
http://blogs.sun.com/roch
http://blogs.sun.com/bobs

We've been trying to collect the wisdom onto one site, but it is
getting a little crowded and therefore tends to be terse.
The blogs explain the concepts in more detail, and more conversationally.
http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide

 -- richard
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