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Month: February 2013

Isolating Java Process to vCD Job

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February 5, 2013

Let’s assume that one of your vCD cells is using a bit of CPU and you are curious what actual task inside of vCD is requiring all of those resources. Here’s how you can find out.

Get the PID from “top –H –u vcloud”; this is the specific task in vCD as opposed to the vCD general process you will find later. In my case the PID = 16225

Convert this PID to Hex = 3F61 or 0x3F61

Find the vCD Java Process; “ps –auxf |grep vcloud” should return at least 2 results. You want the process that has /opt/vmware/vcloud-director/jre/bin/java.

Get a java thread dump with “kill –3 < vCD Java Process PID>”.

Go search the cell.log (/opt/vmware/vcloud-director/logs) for the Hex value of the process that you are trying to identify. In our case the process we want to investigate is 0x3F61. A quick search for that value brings up the java trace of what vCD is attempting to do.

high CPU, Isolate, java, Process, vCD, vcloud director, VMware

About Me

My name is Caleb Stephenson, and I am a Sr. Cloud Reliability Engineer working on the Private Cloud Team at VMware and specializing in Systems Management and Automation. We make cloud computing happen at scale. If you have attended a VMworld since 2013 and taken a Hands-On-Labs or used HOL for another event, it is just one of the many things that we provide as a cloud provider.

I am a jack-of-all-trades and unfortunately, master at none. My various IT certifications over the years have included AWS Certified Solutions Architect – Associate,  VMware Certified Professional (VCP), Certified Scrum Product Owner (CSPO), ITIL-F, RHCSA (RHEL 7), MCSA 2003 and MCSE 2003. While I am an engineer, I am also the Product Owner for my team which means my career is a delicate balance of technical and managerial skills.

Everything on this blog should be considered mine personally and not representative of my employer. There may be stuff published here that is pertaining to VMware products or product issues/fixes or bits of code I wrote. My blog should be read just like any other blog and not as a representative of VMware in any way, shape or form.

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