PSE performance slow

PSE 8, Windows XP, 2Gb memory
Symptoms
Takes quite some time for thumbnails to generate or for larger
If I select several thumbnails and type a tag name into the tags search box, it can take up to 15 seconds for the tag results to be displayed
There could be several factors at play
Older PC
I have an older Dell Inspiron running XP. Having said that it is still an Intel 1.8GHz with Hyperthreading and 2Gb memory. When I notice the slow performance I do not see excessive CPU, nor memory consumption. The FSB I think is 667Mhz
Images are on external NAS
I have a ReadyNas Duo (v1) that is ethernet cabled to my router which is ethernet cabled to my PC. Everything is at 100Mb. I have 2 1Tb drives in X-Raid. When generating thumbnails I do see network activity, but not when tagging. I've never seen the network monitor go over about 50%. The catalog is on local disk.
Older modem/router
I have a Linksys WAG200 modem/router. I do see a lot of activity over the ports when I'm working.
Solutions?
I'd like some considered suggestions. Sure I could replace everything but then I wouldn't have learned anything.
I'm wondering whether bringing all the photo's off the NAS into local disk would be an advantage. As a side issue I backed up the catalog recently, and while the folders with the catalog didn't seem that big, the process was something like a 30Gb backup which seemed ridiculous and took about half an hour to write (to the NAS). I'm assuming it was the thumbnails but I don't need to back those up as if I have a catastrophic failure I'm quite happy to let it chug away during recovery and regenerate the thumbnails. Not like I have to do it every week... Anyway if I brought the images into local storage I'd then have to schedule backups to the NAS regularly but that's OK...
I'm wondering whether the old Linksys gateway is a bottleneck and since I have several other Netgear devces about the place whether upgrading to a gigabit Netgear gateway would do any good.
PC. I'll have to upgrade anyway in which case I'd go for i7, gigabit ethernet, video card. I'm not entirely convinced that the PC is the major problem though...
Any help appreciated...

Hi,
The activity is slower in case of network media involved. Bringing your media into local disk would make your Organizer faster.
The size of backup folder is inclusive of media file size, catalog file, thumbnail cache etc. Hence it would not just be thumbnails. Also taking backup would be faster for non-network drives.
I would suggest you to try Organizer with media on non-network drives. That should solve majority of your issues.
Regards,
vaishali

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https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/3f66ba90-0201-0010-ac8d-b61d8fd9abe9
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/e0e6a6e3-0601-0010-e6bd-ede96db89ec7
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2010-03-03 15:34:22 -0500: Disk Utility started.
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2010-03-03 15:34:31 -0500: Checking Journaled HFS Plus volume.
2010-03-03 15:34:31 -0500: Detected a case-sensitive catalog.
2010-03-03 15:34:32 -0500: Checking Extents Overflow file.
2010-03-03 15:34:32 -0500: Checking Catalog file.
2010-03-03 15:52:44 -0500: Checking multi-linked files.
2010-03-03 21:12:52 -0500: Checking Catalog hierarchy.
2010-03-03 21:51:24 -0500: Checking Extended Attributes file.
2010-03-03 21:53:06 -0500: Checking multi-linked directories.
2010-03-03 23:22:27 -0500: Checking volume bitmap.
2010-03-03 23:22:29 -0500: Checking volume information.
2010-03-03 23:22:29 -0500: 2010-03-03 23:22:29 -0500: The volume Backup of Chris Huntington’s Computer appears to be OK.
Repair tool completed: 2010-03-03 23:22:31 -0500
2010-03-03 23:22:31 -0500:
2010-03-03 23:22:31 -0500:
2010-03-04 08:24:55 -0500: Attach Image “Chris Huntington’s Computer_001b63a90f4c.sparsebundle”
2010-03-04 08:24:55 -0500: Initializing…
2010-03-04 08:24:59 -0500: Operation canceled by user.
2010-03-04 08:25:10 -0500: Attaching…
2010-03-04 08:25:11 -0500: Checking volumes…
2010-03-04 08:25:11 -0500: Volume check completed…
2010-03-04 08:25:11 -0500: Attaching…
2010-03-04 08:25:11 -0500: Finishing…
2010-03-04 08:46:59 -0500: Verify and Repair volume “Backup of Chris Huntington’s Computer”
Starting repair tool: 2010-03-04 08:46:59 -0500
2010-03-04 08:46:59 -0500: Checking Journaled HFS Plus volume.
2010-03-04 08:46:59 -0500: Detected a case-sensitive catalog.
2010-03-04 08:46:59 -0500: Checking Extents Overflow file.
2010-03-04 08:46:59 -0500: Checking Catalog file.
2010-03-04 09:05:12 -0500: Checking multi-linked files.
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2010-03-04 11:35:56 -0500:
2010-03-04 11:35:56 -0500:
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Hi to all,
My database performance is suddenly going slow. My PGA Cahe hit percentage remain in 96%.
I will list out the findidngs I found...
Some tables were not analyzed since Dec2007. Some tables were never analyzed.
(Will the tables were analyzed the performance will be improved for this scenario)
PGA Allocated is 400MB. But till now the max pga allocated is 95MB since Instance started (11 Nov 08 - Instance started date).
(I persume we have Over allocated PGA can i reduce it to 200MB and increase the Shared pool and Buffer Cache 100MB each?)
Memory Configuration:
Buffer Cache: 504 MB
Shared Pool: 600 MB
Java Pool: 24MB
Large Pool: 24MB
SGA Max Size is: 1201.72 MB
PGA Aggregate is: 400 MB
My Database resided in Windows 2003 Server Standard Edition with 4GB of RAM.
Please give me suggestions.
Thanks and Regards,
Vijayaraghavan K

Vijayaraghavan Krishnan wrote:
My database performance is suddenly going slow. My PGA Cahe hit percentage remain in 96%.
Some tables were not analyzed since Dec2007. Some tables were never analyzed.
PGA Allocated is 400MB. But till now the max pga allocated is 95MB since Instance started (11 Nov 08 - Instance started date).
(I persume we have Over allocated PGA can i reduce it to 200MB and increase the Shared pool and Buffer Cache 100MB each?)
You are in an awkward situtation - your database is behaving badly, but it has been in an unhealthy state for a very long time, and any "simple" change you make to address the performance could have unpredictable side effects.
At this moment you have to think at two levels - tactical and strategic.
Tactical - is there anything you can do in the short term to address the immediate problem.
Strategic - what is the longer-term plan to sort out the state of the database.
Strategically, you should be heading for a database with correct indexing, representative data statistics, optimium resource allocation, minimum hacking in the parameter file, and (probably) implementation of "system statistics".
Tactically, you need to find out which queries (old or new) have suddenly introduced an extra work load, or whether there has been an increase in the number of end-users, or other tasks running on the machine.
For a quick and dirty approach you could start by checking v$sql every few minutes for recent SQL that might be expensive; or run checks for SQL that has executed a very large number of times, or has used a lot of CPU, or has done a lot of disk I/O or buffer gets.
You could also install statspack and start taking snapshots hourly at level 7, then run off reports covering intervals when the system is slow - again a quick check would be to look at the "SQL ordered by .." sections of the report to the expensive SQL.
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If you want to post a statspack report to the forum, we may be able to make a few further suggestions. (Use the "code" tags - in curly brackets { } to make the report readable in a fixed fontRegards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
"The temptation to form premature theories upon insufficient data is the bane of our profession."
Sherlock Holmes (Sir Arthur Conan Doyle) in "The Valley of Fear".

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