RE: Java and CPU -- JAVA400-L

The Apache server is easier on resources than Websphere, HTTP server, or
both?

Brad

> -----Original Message-----
> From: David Morris [mailto:dmorris@plumcreek.com]
> Sent: Thursday, March 01, 2001 3:57 PM
> To: JAVA400-L@midrange.com
> Subject: Re: Java and CPU
> 
> 
> Brad,
> 
> I see a lot of background activity on my machine.  It seems a 
> lot better with 
> V4R5 and 1.2.2.  On my system now, that background is less 
> than .5 percent, 
> but over a week the total CPU adds up.  I see the same thing 
> with the HTTP 
> server.  The Apache server is easier on resources.
> 
> David Morris  
> 
> >>> bvstone@taylorcorp.com 03/01/01 01:34PM >>>
> This I found interesting.
> 
> We have an AS/400 that is a web server only.  We're running CGI to do
> customer service online for multiple customer/catalogs.  
> Right now it's
> about 30 sites (all using the same 3 or 4 programs, webfacing 
> controled by
> config files, SSIs, etc..).  
> 
> Some CPU stats for the normal HTTP Server: (jobs entered 
> system 2/14/2001)
> Subsystem/Job  Type  Pool  Pty      CPU  
> CSO            BCH     2   25    1516.4   
> CSO            BCI     2   25        .1   
> CSO            BCI     2   25        .3   
> CSO            BCI     2   25      69.0   
> CSO            BCI     2   25      26.1   
> CSO            BCI     2   25     727.4   
> 
> Now, I have also have websphere running.  I've been trying to 
> duplicate this
> CGI system using servlets and and making progress (no wonder 
> I'm asking so
> many questions!).  
> 
> Anyhow Here's the CPU stats for the default WAS server that 
> is processing
> the servlets: (entered system 2/19/2001)
> 
> Subsystem/Job  Type  Pool  Pty      CPU  
> DEFAULT_SE     BCI     2   25+   2847.7      
> QEJBADMIN      BCI     2   25+   6203.9      
> QEJBMNTR       ASJ     2   25        .1     
> 
> The HTTP server has received about 7000 hits since it started 
> on 2/14/2001.
> This server serves up those 30 sites and is available 24/7.  
> 
> The WAS server hasn't even broken a couple hundred hits since 
> it's only me
> testing when I have time (started on 2/19/2001).  It's not 
> available to the
> interent and I am the only developer on the box. 
> 
> The Java version of the application isn't querying customer 
> service data
> yet, I'm simply building the web pages.  The CGI programs run 
> dynamic SQLs
> to select and display data depending on customer signon information.
> 
> The numbers compared to just the default WAS server may be close, but
> remember, it's doing about 1/100th of the work right now.
> 
> Any thoughts, ideas, or otherwise?  I'm really wondering why 
> so much more
> CPU is used.  If I were to take my app and java-ize it, it 
> looks like it
> would bury the current machine we are using.  
> 
> Last question, does WAS start more instances when it needs to 
> them to handle
> more requests like the HTTP server does?  What about the new 
> Apache server,
> does it start more jobs to handle more requests?
> 
> Thanks!
> 
> Brad
> 
> 
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