well, they all pretty much confirm what I've been saying. There are plenty of good reasons to virtualize, performance (under the vast majority of use cases) isn't one of them. Software rarely scales linearly with respect to it's consumption of hardware. Virtualization will parcel out hardware to your application how it sees fit and that is generally in a different pattern with different scaling characteristics than the native environment would have. Net result, test != prod. Conclusion, test environment is likely to expose phantom performance bottlenecks that once "fixed" will likely offer very little if any difference in the performance of the production system. virtualization
advice, advance at your own peril with this one ;-) Regards, Kirk On Jul 8, 2011, at 7:04 AM, Selvam T, Palani wrote: > Kirk, > Thanks for the points. > > I have gone through following links and suggested not to use virtualized > servers.. > > Virtualization: Performance testing - > http://www.macworld.com/article/145878/2010/01/virtulapptesting.html > > Measuring the Performance Impact of Virtualizing a Web Application > Server > http://www.webperformance.com/library/reports/LoadTestingVirtualizationP > erformance/index.html > > Response to 'Load Testing a Virtual Web Application' > http://blogs.vmware.com/vmtn/2007/04/response_to_loa.html > > Virtualization performance testing tips > http://blogs.intel.com/idf/2008/08/virtualization_performance_tes.php > > Thanks & Regards, > Palani Selvam > > > -----Original Message----- > From: Kirk [mailto:kirk.pepperd...@gmail.com] > Sent: Thursday, July 07, 2011 11:59 PM > To: JMeter Users List > Subject: Re: [GENERAL]Perf Testing on virtualized servers > > > 1) You cannot virtualize yourself into more hardware > 2) prod != test environment == potential to shift bottlenecks. > 3) not testing in the environment of deployment significantly increases > the risk of the deployment failing > > I see no pro's > Regards, > Kirk > On Jul 6, 2011, at 5:01 PM, Selvam T, Palani wrote: > >> Hi, >> >> >> >> We are planning to do load testing on virtual machines as servers, > which >> is scaled down version of production environment. I would like to know >> the pros & cons for virtualized servers for performance testing. >> >> >> >> What are the things, should I take care...? >> >> >> >> >> >> Thanks & Regards, >> >> Palani Selvam >> >> >> >> >> >> >> > ************************************************************************ > ******************************* >> >> This E-mail message and its attachments, if any are intended solely > for the use of the addressee hereof. In addition, this message and the > attachments, if any may contain information that is confidential, > privileged and exempt from disclosure under applicable law. If you are > not the intended recipient of this message, you are prohibited from > reading, disclosing, reproducing, distributing, disseminating or > otherwise using this transmission. >> >> >> Delivery of this message to any person other than the intended > recipient is not intended to waive any right or privilege. If you have > received this message in error, please promptly notify the sender by > reply E-mail and immediately delete this message from your system. > Instructions transmitted over this system are not binding on us until > they are confirmed by us. Message transmission is not guaranteed to be > secure or free of software virus. While Altisource Portfolio Solutions > and its subsidiaries collectively "Altisource" takes every reasonable > precaution to minimize such risks, Altisource cannot accept liability > for any damage sustained by you or any third party as a result of > software viruses. >> >> > ************************************************************************ > ******************************* >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org > For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org > > > > > ******************************************************************************************************* > > This E-mail message and its attachments, if any are intended solely for the > use of the addressee hereof. In addition, this message and the attachments, > if any may contain information that is confidential, privileged and exempt > from disclosure under applicable law. If you are not the intended recipient > of this message, you are prohibited from reading, disclosing, reproducing, > distributing, disseminating or otherwise using this transmission. > > > Delivery of this message to any person other than the intended recipient is > not intended to waive any right or privilege. If you have received this > message in error, please promptly notify the sender by reply E-mail and > immediately delete this message from your system. Instructions transmitted > over this system are not binding on us until they are confirmed by us. > Message transmission is not guaranteed to be secure or free of software > virus. While Altisource Portfolio Solutions and its subsidiaries collectively > "Altisource" takes every reasonable precaution to minimize such risks, > Altisource cannot accept liability for any damage sustained by you or any > third party as a result of software viruses. > > ******************************************************************************************************* > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org > For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org
