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From Alberto São Marcos <alberto....@gmail.com>
Subject Re: Usage of G1 Garbage collector
Date Mon, 06 Jun 2016 18:08:02 GMT
indeed, helpful
thanks!

On Fri, Jun 3, 2016 at 9:31 PM, Spico Florin <spicoflorin@gmail.com> wrote:

> than you very much for sharing these. i hope that others will contribute.
> regards,
> florin
>
>
> On Friday, June 3, 2016, Stephen Powis <spowis@salesforce.com> wrote:
>
>> Here's the flags we're using:
>>
>> -Xms3G -Xmx3G -XX:MaxPermSize=100M  -Xloggc:gc-%ID%.log
>> -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintTenuringDistribution
>> -XX:+PrintGCApplicationStoppedTime -XX:+DisableExplicitGC -XX:+UseGCLogFileRotation
>> -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=50M -XX:+UseCompressedOops -XX:+AlwaysPreTouch
-XX:+UseG1GC
>> -XX:MaxGCPauseMillis=20 -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=OOMDump-%ID%.log
>>
>> Here's a link to a GC log analysis (takes several minutes to load)
>>  http://gceasy.io/my-gc-report?p=L2hvbWUvcmFtL3VwbG9hZC9pbnN0YW5jZTEvc2hhcmVkLzIwMTYtNi0zL2djbG9nLnppcC0wLTU3LTE3
>>
>> This is definitely outside the realm of my knowledge, so don't use this as any kind
of benchmark.
>> I'm curious if anyone can comment on any suggested adjustments?  I feel like we have
a ton of churn
>> in our young gen, but really don't have the experience tuning java's GC or any examples
to compare it with.
>>
>> Thanks!
>>
>>
>> On Fri, Jun 3, 2016 at 3:41 PM, Otis Gospodnetić <
>> otis.gospodnetic@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> +1 for G1 for large heaps where you are seeing big GC pauses.  Works
>>> well for us.
>>> See:
>>> https://sematext.com/blog/2013/06/24/g1-cms-java-garbage-collector/
>>>
>>> Otis
>>> --
>>> Monitoring - Log Management - Alerting - Anomaly Detection
>>> Solr & Elasticsearch Consulting Support Training - http://sematext.com/
>>>
>>>
>>> On Tue, May 31, 2016 at 5:21 AM, Spico Florin <spicoflorin@gmail.com>
>>> wrote:
>>>
>>>> Hello!
>>>>  I would like the community  the following:
>>>> 1. Are you using the G1 garbage collector for your workers/supervisors
>>>>  in production?
>>>> 2. Have you observed any improvement added by adding this GC style?
>>>> 3. What are the JVM options that you are using and are a good fit for
>>>> you?
>>>>
>>>> Thank you in advance.
>>>>  Regards,
>>>>  Florin
>>>>
>>>>
>>>
>>

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