PS.  I never had the problem with other servers and I do the exact same
operation for all readable items (though there are a few less because the
other server is older) which never times out.  Presumably that server is
busy as well.

 

So no matter that you probably found the individual item causing the issue,
it is a behaviour change in 8.1

 

Cheers

Ben

 

From: Ben Chernys [mailto:ben.cher...@softwaretoolhouse.com] 
Sent: June-11-13 00:17
To: 'arslist@ARSLIST.ORG'
Subject: RE: Odd 93 timeout behaviour in 8.1.0

 

Hi Steve,

 

Thanks you've given me a good hint.

 

I only read the readable ones and only allow writes to the writable ones.  I
throw my own errors if an inappropriate operation is attempted.

 

It could very well be the DB Free Space one.  That makes sense if the server
is busy.  And that would likely not be in server memory.

 

I never actually look at the values other than the first four I get
separately.  I'm not sure I can get rid of any of them (it would be a logic
hole) but I will for a quick test.  Then I am not sure what I'll do but
perhaps just add a bit of doc.

 

Thanks

Ben

 

From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Steve Kallestad
Sent: June-10-13 23:56
To: arslist@ARSLIST.ORG
Subject: Re: Odd 93 timeout behaviour in 8.1.0

 

** 

Oh - and beware # 348 - it's used to restart the plugin server, but if I'm
not mistaken on a read it will just give you an error.

 

On Mon, Jun 10, 2013 at 2:51 PM, Steve Kallestad <st...@tabtonic.com> wrote:

 

I would try doing a little bit of logging or maybe even chopping the list
down to see where the problem is.  I imagine it's just one or two out of the
entire list that's giving you a headache.

 

I threw together a quick script to iterate through them and 209 - Get DB
Free Space took a while.  Outside of that everything came back pretty darn
fast.

 

 

 

On Mon, Jun 10, 2013 at 4:38 AM, Ben Chernys
<ben.cher...@softwaretoolhouse.com> wrote:

** 

Hi Folks,

 

Just another odd behaviour I am noticing and wondering if, firstly, anyone
else does this, and secondly, if there is any work-around for this.  This
behaviour is only noticed on 8.1 and not on 8.0 or other versions of ARS
though my memory gets murkier as time passes.

 

Environment:

 

ITSM 8.1 Full suite running on Windows and MS SQL on a separate server.

 

ARS Version       8.1.00 201301251157

DB Type               SQL -- SQL Server

DB Version          2008 R2 (SP2) - 10.50.4000.0 (X64) 

OS                          Windows 6.1

2 element server group.  I connect to the admin server.

 

Issue:

 

I am getting 93s regularly though intermittently at a single point when the
server is actually busy.  The oddity is that point.

 

I initialise by authenticating to the server and then asking for a very few
pieces of information from that server including its name and version.

 

I then build a complete list of available, readable info items and get that
as well (some 350ish).  It is here that I get the timeouts albeit when the
server is busy.  The call is "ARGetServerInfo".  I obviously select only the
readable items.  

 

If I get through that, I have generally no further time-outs and processing
runs at normal speeds.  

 

I now execute the same three calls on another 7.1 server - that is: session
initiation, a few items in a single getinfo call, all available items in a
further get info call.  I then process queries, updates, schema and field
gets across the two servers - all without further ado.  

 

Most if not all the info for this call would be in memory of the arserver,
So the oddity is why this call often returns a 93, only on the 8.1 server,
and only when the server is actually busy, having responded very quickly to
the same call with only a few items in the request block.

 

Ben Chernys
Senior Software Architect
  

Canada / Deutschland
Mobile:      +49 171 380 2329 <tel:%2B49%20171%20380%202329>     GMT + 1 + [
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