Re: Game Company- Java Server Thread Priority

From: BlackHawke (blackhawke_at_legacygames.net)
Date: 01/26/04 

Date: Mon, 26 Jan 2004 07:37:33 GMT

I know that there is CPU Throttling in Windows 2003... Is that only for IIS?

We found a way to compile this into native code... It's now revved up to 25%
of the CPU cycles during intense work... I notice that in the "performance"
section of the task manager it lists 4 CPU's (we only have 2)... It's
letting us max out one of the "4" to 100%.... Any way to let it max them
all?

Again, I increased the priority, but no luck....

Nick

"Mike Brannigan [MSFT]" <mikebran@online.microsoft.com> wrote in message
news:OL2tQEZ4DHA.540@tk2msftngp13.phx.gbl...
> If all of the underlying system and setup of Windows is identical to the
> first system (with the exception of the hardware changes to faster
> components). Then unless it is a hardware issue (some setting in the BIOS
> to incorrectly set up the mother board or CPUs); then your statement about
> "revamped some of the major systems (the code and the computer itself)," -
> would lead you to possibly retest the system using the original code base
> for the application that was running on the old server. This will help
> eliminate your code changes as being the source of the error. (alternative
> path is to put your new code version on the old server and retest)
>
> --
> Regards,
>
> Mike
> --
> Mike Brannigan [Microsoft]
>
> This posting is provided "AS IS" with no warranties, and confers no
> rights
>
> Please note I cannot respond to e-mailed questions, please use these
> newsgroups
>
> "BlackHawke" <blackhawke@legacygames.net> wrote in message
> news:C_4Qb.23473$1e.6174@newsread2.news.pas.earthlink.net...
> > Hello!
> >
> > This is my second post. Ppl really helped me with the first. I hope
there
> > are answers for this one as well
> >
> > I own a game company (www.aepoxgames.net) releasing the beta for our
first
> > sci-fi space game in about 2 weeks (www.andromedaonline.net)
> >
> > We have multiple servers, but the game engine (Game Server Program) is a
> > Java program (don't ask why) on a windows 2003 enterprise system with
dual
> > xeon p4 processors and 4GB of RAM. This program needs to process orders
> for
> > thousands of ships as fast as possible.
> >
> > When we first set this up, the Game Server Program took exactly 50% of
the
> > CPU cycles when idle, and up to 80% or 90% when working (processing a
> turn,
> > for example) and could process a turn of 10,000 ships in 15 seconds.
> >
> > We revamped some of the major systems (the code and the computer
itself),
> > did a fresh install of Windows 2003 on a different system (still dual
> Xeon,
> > but faster MB and CPU), migrated the Game Server Program there, changed
> the
> > threadpool priorities in the code, etc.
> >
> > We've now noticed that on idle (IE not processing turns), the Game
Server
> > Program takes 0% of the CPU load, and when processing a turn goes up to
> > 3-7%. It never exceeds 7%, and takes FOREVER now when processing a turn.
> It
> > is the only program running on the machine, and services are at a
minimum.
> > Even with 99% of the CPU resources free (IE on System Idle), the game
will
> > never take more than about 7% of the processor time.
> >
> > This is extremely serious.
> >
> > We've tried increasing the priority of Java, but
> > a) The only way I know to do this is through the Task manager,
meaning
> > it would have to be done every time we run the server
> > b) I increased the priority to "Real Time" and this had absolutely
no
> > impact on the server process. The CPU load didn't change.
> >
> > This is the only program intended to run on this computer. We need it
> > hogging as many resources as it can. Database, development, everything's
> on
> > different systems. This machine has one job, run this Java program, and
> it's
> > not taking that job seriously.
> >
> > We don't know if it's a Windows issue, or a Java issue, but I suspect
it's
> a
> > combination of the two. All we know is it used to run fast as hell, and
> now
> > crawls.
> >
> > This post is going to Java groups and Windows groups on the assumption
> that
> > something can be done on each end to improve things (perhaps there's a
> > command line parameter to tell java to run at a higher priority, perhaps
> > there's a windows issue not giving proper time to the Java App).
> >
> > Any thoughts?
> >
> > Thank you for your time.
> > Nick Soutter
> >
> >
>
>