SERVICE INTERRUPTIONS

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SERVICE INTERRUPTIONS - 1/10/2008 4:31:46 PM

Eric

Posts: 5590
Joined: 10/10/2003
From: Seattle, WA
Status: offline

Sorry folks. In case you have noticed, I have been doing some futzing on the web server today which has caused a few short interruptions in service. Suffice it to say that since I deployed the new Wiki software a month ago, the web server (not the database server) has occasionally had issues where the IIS (web server software) has slowed down and consumed 100% of the CPU. This causes the site to crawl. I have recently been looking at this issue more closely to understand what was going on and to try and alleviate this. In all the time that CellarTracker has been running, generally the web server has had no issue keeping up. (Past performance issues have focused on the database server.)

The Wiki software is based on the Open Source software from www.openwiki.com. This is very dependent on some Microsoft stuff, specially MSXML. (The Wiki content is rendered to XML and transformed to HTML on the server side.) Originally I was using MSXML3 and just recently moved to MSXML4. After deeper research I have made some deeper code changes to move to MSXML6, the current standard. I have also used a number of the features in IIS6 to ensure that the web server should (re)cycle resources more proactively. So far the load appears to be down to 1/3 of what it was at...

In short, I am cautiously optimistic that we are done with the glitches, but I suspect that there might be further tweaking required.

_____________________________

Cheers!
-Eric LeVine

Post #: 1

RE: SERVICE INTERRUPTIONS - 1/10/2008 6:16:38 PM

Eric

Posts: 5590
Joined: 10/10/2003
From: Seattle, WA
Status: offline

Sorry, a little insult to injury. I turns out that I had a few critical updates to deploy for MSXML6 as well. And a few reboots to boot. Hopefully done with this for a while.

_____________________________

Cheers!
-Eric LeVine

(in reply to Eric)

Post #: 2

RE: SERVICE INTERRUPTIONS - 1/16/2008 1:47:53 PM

Winetex

Posts: 108
Joined: 5/9/2004
From: Austin, Texas
Status: offline

Eric,

CT has been crawling for me even after your last post. It seems to hang about half the time I hit the site. I've cleared cookies, etc. and it's happening on different computers/browsers.

Just wanted you to know that there hasn't been much improvement.

Thanks,
Shannon

(in reply to Eric)

Post #: 3

RE: SERVICE INTERRUPTIONS - 1/16/2008 2:01:02 PM

Eric

Posts: 5590
Joined: 10/10/2003
From: Seattle, WA
Status: offline

Are there specific queries/views that are slow? the specific ghost i was chasing has been thoroughly debugged and nailed. more details later.

_____________________________

Cheers!
-Eric LeVine

(in reply to Winetex)

Post #: 4

RE: SERVICE INTERRUPTIONS - 1/16/2008 2:20:45 PM

Winetex

Posts: 108
Joined: 5/9/2004
From: Austin, Texas
Status: offline

Of course it's flying along now.

I'll jot down the specific queries if it happens again. Thanks for the reply.

*****************
Just remembered one earlier today - I was revising a tasting note and it hung for about 30 seconds thinking that through when I submitted the revision. It eventually worked.

(in reply to Eric)

Post #: 5

RE: SERVICE INTERRUPTIONS - 1/16/2008 2:36:38 PM

Eric

Posts: 5590
Joined: 10/10/2003
From: Seattle, WA
Status: offline

Was it a wine with MANY reviews? Which wine? there is something i can do there.... sorry, one-armed and on painkillers. a little loopy right now...

_____________________________

Cheers!
-Eric LeVine

(in reply to Winetex)

Post #: 6

RE: SERVICE INTERRUPTIONS - 1/16/2008 2:48:22 PM

Winetex

Posts: 108
Joined: 5/9/2004
From: Austin, Texas
Status: offline

Loopy guy go recover already. Hope you feel better.

If you must know it was 96 Cristal.

(in reply to Eric)

Post #: 7