[Pharo-project] OT: vm performance

Schwab,Wilhelm K bschwab at anest.ufl.edu
Mon Sep 28 21:24:55 EDT 2009

Thanks!  I was thinking in terms of "anything but Smalltalk" to avoid the obligatory FUD and Mud slinging.  However, it does sound like a useful idea, and if the code is already written, it can't hurt to see what it shows.  If it flags something, then I can figure out whether I can get the IT types to believe it.


-----Original Message-----
From: pharo-project-bounces at lists.gforge.inria.fr [mailto:pharo-project-bounces at lists.gforge.inria.fr] On Behalf Of John M McIntosh
Sent: Monday, September 28, 2009 6:50 PM
To: Pharo-project at lists.gforge.inria.fr
Subject: Re: [Pharo-project] OT: vm performance

There was code supplied by both Andreas and Bert  and corrected by Juan that addressed the issue of profiling a server image

	Subject: 	Re: [squeak-dev] Re: How to profile a server image?
	Date: 	March 4, 2009 5:07:52 AM PST

Perhaps you have a seaside component that kicks off a MessageTally then it shows you the results to determine if things look correct.

You'll need to follow the emails and see if any of the changes actually made it into Pharo, it would have been helpful if they were.

You could use OSProcess to pull the results of the command 'uptime' so you can understand how busy it is.

On 2009-09-28, at 4:37 PM, Schwab,Wilhelm K wrote:

> Hello all,
> Here I am referring to a vm in the OS sense.  Suppose you are forced 
> to run code on a virtual machine running on a blade computer hidden 
> behind locked doors.  Access to the machine is limited to a remote 
> desktop connection.  You suspect that the machine is far too busy for 
> its own good.  Is there any way to test that?  Is there any way to 
> separate network latency from the box being slow, or perhaps just 
> plain busy restoring a backup to fix up the most recent crash of some 
> piece of hardware or who-knows-what software?
> Something that periodically runs a lightweight benchmark and logs the 
> results comes to mind.  Is there something that is commonly used for 
> such measurments?  I would rather not add too badly to machine's 
> workload, but it gets sloooooowwwwwww at times :(  Getting some data 
> to objectify that statement could be useful.
> Bill
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