On Wed, Feb 25, 2009 at 12:05 AM, Aidan Van Dyk ai...@highrise.ca wrote:
* Greg Smith gsm...@gregsmith.com [090201 00:00]:
Shouldn't someone have ranted about RAID-5 by this point in the thread?
What? Sorry, I wasn't paying attention...
You mean someone's actually still using RAID-5?
On Wed, Feb 25, 2009 at 9:23 AM, Joshua D. Drake j...@commandprompt.comwrote:
RAID5 outside of RAID 0 is the worst possible RAID level to run with a
database. (of the commonly used raid level's that is).
It is very, very slow on random writes which is what databases do.
Switch to RAID 10.
On Tue, Feb 24, 2009 at 4:40 PM, Jordan Tomkinson jor...@moodle.com wrote:
taken before the ~7000 rows were entered.
relation| size
---+
public.mdl_log| 595 MB
public.mdl_forum_posts| 375 MB
Scott,
DB Schema: http://demo.moodle.org/db_schema.txt
SQL Query log: http://demo.moodle.org/querylog.txt
There are _much_ more queries than I anticipated :/
Jordan
On Mon, Feb 23, 2009 at 5:20 PM, Scott Marlowe scott.marl...@gmail.comwrote:
On Mon, Feb 23, 2009 at 12:42 AM, Jordan Tomkinson jor...@moodle.com
wrote:
On Mon, Feb 23, 2009 at 4:29 PM, Scott Marlowe scott.marl...@gmail.com
wrote:
Oh yeah, what OS is this? Version and all
On Tue, Feb 24, 2009 at 12:35 AM, Scott Marlowe scott.marl...@gmail.comwrote:
On Mon, Feb 23, 2009 at 1:29 AM, Jordan Tomkinson jor...@moodle.com
wrote:
As per the spreadsheet
(http://spreadsheets.google.com/pub?key=pu_k0R6vNvOVP26TRZdtdYw) CPU
usage
is around 50% and starts climbing
On Tue, Feb 24, 2009 at 11:42 AM, Greg Smith gsm...@gregsmith.com wrote:
On Mon, 23 Feb 2009, Scott Marlowe wrote:
well that's pretty normal as the indexes grow large enough to not fit in
cache, then not fit in memory, etc...
Right, the useful thing to do in this case is to take a look at
On Tue, Feb 24, 2009 at 11:42 AM, Greg Smith gsm...@gregsmith.com wrote:
Right, the useful thing to do in this case is to take a look at how big all
the relations (tables, indexes) involved are at each of the steps in the
process. The script at http://wiki.postgresql.org/wiki/Disk_Usage will
help would be appreciated
Regards,
Jordan Tomkinson
System Administrator
Moodle HQ
On Mon, Feb 23, 2009 at 4:03 PM, Scott Marlowe scott.marl...@gmail.comwrote:
On Sun, Feb 22, 2009 at 11:55 PM, Jordan Tomkinson jor...@moodle.com
wrote:
Hi list,
We are running postgresql 8.3.5 and are trying to stress test our LMS.
The problem is when our stress tester (Jmeter) inserts
On Mon, Feb 23, 2009 at 4:08 PM, Scott Marlowe scott.marl...@gmail.comwrote:
One last thing. You were doing vacuum fulls but NOT reindexing, right?
I quote from the document at google docs:
13:50:00vacuum full analyze on all databases through pgadmin
1: Do you have evidence that
On Mon, Feb 23, 2009 at 4:29 PM, Scott Marlowe scott.marl...@gmail.comwrote:
Oh yeah, what OS is this? Version and all that.
Red Hat Enterprise Linux 5.3 x64 kernel 2.6.18-128.el5
os and hardware details are in the google spreadsheet, you might have to
refresh it.
Im working on getting the
On Mon, Feb 23, 2009 at 4:29 PM, Scott Marlowe scott.marl...@gmail.comwrote:
Oh yeah, what OS is this? Version and all that.
I should probably clarify that the high cpu only exists while the jmeter
tests are running, once the tests are finished the cpu returns to 0% (this
isnt a production
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