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zowe / docs-site

Documentation for the Zowe project
https://docs.zowe.org/
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Document Zowe and zD&T optimization #1192

Open Joe-Winchester opened 4 years ago

Joe-Winchester commented 4 years ago

Is your request for enhancement related to a problem? Please describe.

Zowe is often run on zD&T images. There are tuning options available for this scenario.

Describe the solution you'd like

Document zD&T optimization to get Zowe up and running refernce: https://zeeohhsss.wordpress.com/2020/04/23/turbo-java-in-adcd/ https://www.linkedin.com/pulse/running-zowe-zdt-michael-erichsen/?trackingId=DlVV0%2BpIRjWir6fKczG1Wg%3D%3D

Joe-Winchester commented 4 years ago

Also reference the post https://community.openmainframeproject.org/t/configuring-instance-certificates-on-zd-t/5859

Joe-Winchester commented 3 years ago

Doing some experiments I found that the parms

 -Xlp:objectheap:pagesize=1m,warn,pageable -Xlp:codecache:pagesize=1m,pageable \

have the biggest difference.

plavjanik commented 3 years ago

This information is very useful. Is there a way how Zowe configuration scripts can recognize that run on zD&T and use these options automatically?

Joe-Winchester commented 3 years ago

@plavjanik - yes this is possible. I'll get some more measurements and perhaps present it on next week's Arch call to get input. Currently the parms have to be added manually to the start.sh scripts for the various Java runtimes (APIML and Explorer API servers) which means they're not part of the instance.env file (so get overwritten release to release). There may be other variable args that a system programmer would want to set, so perhaps there could be a generic way for a Zowe instance directory to append to the startup args of the different servers based on local tuning.

plavjanik commented 3 years ago

Another useful post - https://emuframe.com/index.php/eng/blog-en/130-z-osmf-2-4-autostart-during-ipl. This and the suggestions from the above link are in the ADCD May 2020 images and z/OSMF starts significantly faster and REST APIs are usable.