Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
Infrastructure Geek
4043 posts

Uber Geek
+1 received by user: 193

Trusted
Microsoft NZ
Subscriber

  Reply # 160394 28-Aug-2008 10:42
Send private message

CYaBro: Hi,I think the problem is that they have a heap of data which includes xrays and some data folders have over 5,000 files & folders in them.


does the software work by shared access to files on a drive, or does it have an SQL engine of some sort behind it?  if file-based have you tried moving some files into another folder and running the software against the new folder with less files in it?

as far as I know lots of files in a folder should only be a problem when browsing via explorer - usually if you use cmd line to navigate folders and list files it is fast as expected. 

also i'd be interested to know if you've tested raw disk speed to see if there are any general speed issues there (what disks were in the old server? scsi, ide or sata?), and raw network speed from a couple of workstations




Technical Evangelist
Microsoft NZ
about.me/nzregs
Twitter: @nzregs


411 posts

Ultimate Geek


  Reply # 160486 28-Aug-2008 15:36
Send private message

similar to the above,

What is the Data folder?

How often are backup's run across the network?

I have a dental practice that I run there network, and they have 7 - 8gb's of data, and that runs really smoothly, with the exact backups running during lunch, and at the end of the day onto differant computers.




-- Divett Enterprises -- The Power Of Tomorrow --

 
 
 
 




2845 posts

Uber Geek
+1 received by user: 257


  Reply # 160592 28-Aug-2008 23:18
Send private message

The server has dual Intel Gigabit NICs in it but only one is being used.
There are no backups during the day only at night.

The main problem is when trying to access the patient x-rays and the x-ray data folder has about 5300 folders in it.
Each folder relates to a patient.
These can't be moved as the Examine Pro software organises the folder structure.
There appears to some form of SQL server running on the server but it is all part of the Exact software and there doesn't appear to be any way to manually configure it.

I don't think it is a problem with the Exact software anyway as I have had a similar problem in the past at another site where they had slow network access when trying to open a folder on the server that had over 5000 files/folders in it.  They have a gigabit switch as well.
There though I was able to reorganise the folder to drop the number of folders/files and it made it a lot faster.
The only thing in common with both sites is they are both running Windows Server 2003 SP2.
I am going to try a gigabit switch at the dentist but I'm 99% sure it won't make any difference.

I did some network tests and was able to transfer a 150MB file and a 900MB file in the time that seemed normal to me.

As I said earlier the old server had 2x80GB IDE drives in RAID1 on a Promise PCI card.
The new server has 2x500GB SATAII Seagate ES drives in RAID1 on the onboard Intel controller.
I have enabled Write cache on the array but it made no difference.
The old server was a crappy PIII 1GHz CPU with 1.5GB RAM.
The new server is a quad core Xeon 2.4GHz with 2GB RAM.

The only other thing it could be is the Exact software update that I had to put on the new server at the time of transfering the data.
The update was from 9.4 to 9.7.  This had to be done as that was the only install CD available.
Exact support say they have not had any other sites with similar problems though.




Infrastructure Geek
4043 posts

Uber Geek
+1 received by user: 193

Trusted
Microsoft NZ
Subscriber

  Reply # 160596 28-Aug-2008 23:59
Send private message

CYaBro:

The main problem is when trying to access the patient x-rays and the x-ray data folder has about 5300 folders in it.
Each folder relates to a patient.
These can't be moved as the Examine Pro software organises the folder structure.
There appears to some form of SQL server running on the server but it is all part of the Exact software and there doesn't appear to be any way to manually configure it.


so are the users are browsing these folders directly, using explorer, or are they browsing them from within one of the applications - exact, examine pro?

As these are containing x-rays are these stored as images?  Perhaps there is a problem with thumbnails being created each time they access the folders? check this KB for some info about the desktop.ini issues with winxp and network drives: http://support.microsoft.com/kb/840309




Technical Evangelist
Microsoft NZ
about.me/nzregs
Twitter: @nzregs




2845 posts

Uber Geek
+1 received by user: 257


  Reply # 160622 29-Aug-2008 09:11
Send private message

They don't browse to the folders in an explorer window.
In Exact they go to the Charts tab which then loads up Examine Pro in the background.
On this Charts tab you can see thumbnails of the x-rays - this is fine.
You can then double-click on a thumbnail and it is opened up in Examine Pro.  This is where the speed slows down. 

The x-rays are stored as a .dic file which is the image format for Examine Pro and each image file is usually 2-3MB in size.

It can take up to 30 seconds for the x-ray to show up in Examine Pro where as with the old server it would only take about 5 seconds.
Once in Examine Pro viewing the x-ray you can see all the other thumbnails and can open up another x-ray so you can see two side by side.  This also takes a long time.

All the workstations have SP2 so that KB you linked to doesn't apply.




251 posts

Ultimate Geek
+1 received by user: 20

Lifetime subscriber

  Reply # 160651 29-Aug-2008 10:14
Send private message

Try following the relevant steps outlined in this document. If you haven't already tried them, you should notice a performance increase: http://download.microsoft.com/download/2/8/0/2800a518-7ac6-4aac-bd85-74d2c52e1ec6/tuning.doc
The whole document is relevant apart from the IIS and AD sections.

There is one error in the file server section - for some reason it is correct in the IIS section :/: The key to set for Disablelastaccess should be:

Under HKLM\System\CurrentControlSet\Control\FileSystem\  NtfsDisableLastAccessUpdate (REG_DWORD) 1.


Other than that, check that it has the latest BIOS, RAID firmware & drivers etc. The server vendor's website may offer a performance pack or fixes to server specific issues with different operating systems







Infrastructure Geek
4043 posts

Uber Geek
+1 received by user: 193

Trusted
Microsoft NZ
Subscriber

  Reply # 160693 29-Aug-2008 11:50
Send private message

CYaBro: They don't browse to the folders in an explorer window.
In Exact they go to the Charts tab which then loads up Examine Pro in the background.
On this Charts tab you can see thumbnails of the x-rays - this is fine.
You can then double-click on a thumbnail and it is opened up in Examine Pro.  This is where the speed slows down. 

The x-rays are stored as a .dic file which is the image format for Examine Pro and each image file is usually 2-3MB in size.

It can take up to 30 seconds for the x-ray to show up in Examine Pro where as with the old server it would only take about 5 seconds.
Once in Examine Pro viewing the x-ray you can see all the other thumbnails and can open up another x-ray so you can see two side by side.  This also takes a long time.

All the workstations have SP2 so that KB you linked to doesn't apply.


the KB still applies for the setting that was introduced - just not the hotfix files. In any case that doesnt appear to be the problem you're experiencing.  It looks like the perhaps "Examine Pro" software might be where the problem lies.

Can you browse the folder and open files via explorer in a different image viewer app at "normal" speeds?  Google tells me that there are several free programs that can open the .dic(om) image files.




Technical Evangelist
Microsoft NZ
about.me/nzregs
Twitter: @nzregs




2845 posts

Uber Geek
+1 received by user: 257


  Reply # 162661 6-Sep-2008 17:00
Send private message

Well blow me down.  The gigabit switch looks to have fixed the problem!
The server is the only machine on the network that has a gigabit network card though but the LevelOne 24 port Gigabit switch was cheap as chips and I got an extra 15% off on the day for a SnapperNet special :D
Been in for a week now and client said that speed has improved greatly.

Seems strange that it was working fine at 100Mbs with the old server but you get these weird problems with computers.




1 | 2 
View this topic in a long page with up to 500 replies per page Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

$3.74 million for new electric vehicles in New Zealand
Posted 17-Jan-2018 11:27


Nova 2i: Value, not excitement from Huawei
Posted 17-Jan-2018 09:02


Less news in Facebook News Feed revamp
Posted 15-Jan-2018 13:15


Australian Government contract awarded to Datacom Connect
Posted 11-Jan-2018 08:37


Why New Zealand needs a chief technology officer
Posted 6-Jan-2018 13:59


Amazon release Silk Browser and Firefox for Fire TV
Posted 21-Dec-2017 13:42


New Chief Technology Officer role created
Posted 19-Dec-2017 22:18


All I want for Christmas is a new EV
Posted 19-Dec-2017 19:54


How clever is this: AI will create 2.3 million jobs by 2020
Posted 19-Dec-2017 19:52


NOW to deploy SD-WAN to regional councils
Posted 19-Dec-2017 19:46


Mobile market competition issues ComCom should watch
Posted 18-Dec-2017 10:52


New Zealand government to create digital advisory group
Posted 16-Dec-2017 08:47


Australia datum changes means whole country moving 1.8 metres north-east
Posted 16-Dec-2017 08:39


UAV Traffic Management Trial launching today in New Zealand
Posted 12-Dec-2017 16:06


UFB connections pass 460,000
Posted 11-Dec-2017 11:26



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.