At 03:47 PM 8/25/2003, Jonathan Ellis wrote:
>(Posted to General a while back but perhaps this is a more appropriate
>list since I got no responses. :)
>
>How can I tell if writing to the WAL is a bottleneck? In other words, how
>can I tell if upgrading the disk the WAL is on will improve performance?
>(I do have the WAL on its own disk.)
It depend on the OS. If on a unix-like system, you should look at sar's
for the disks. What also matter besides for separate spindles are separate
controllers (if you are large/lucky) enough to have more than one.
I'd start by throwing more memory to the buffers, to see if that
helps. Next, i'd look carefully and the SQL statements for inefficiencies.
>-Jonathan
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 4: Don't 'kill -9' the postmaster
-------------------------------------------------------------------------------------------------------------------------
Naomi Walker Chief Information Officer
Eldorado Computing, Inc.
nwalker@eldocomp.com 602-604-3100
-------------------------------------------------------------------------------------------------------------------------
The secret of getting ahead is getting started. -Anonymous
-------------------------------------------------------------------------------------------------------------------------
-- CONFIDENTIALITY NOTICE --
This message is intended for the sole use of the individual and entity to whom it is addressed, and may contain
informationthat is privileged, confidential and exempt from disclosure under applicable law. If you are not the
intendedaddressee, nor authorized to receive for the intended addressee, you are hereby notified that you may not use,
copy,disclose or distribute to anyone the message or any information contained in the message. If you have received
thismessage in error, please immediately advise the sender by reply email, and delete the message. Thank you.