Re: Usage of G1 Garbage collector

[Alberto São Marcos]

indeed, helpful
thanks!

On Fri, Jun 3, 2016 at 9:31 PM, Spico Florin  wrote:

> than you very much for sharing these. i hope that others will contribute.
> regards,
> florin
>
>
> On Friday, June 3, 2016, Stephen Powis  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.gospodne...@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 
>>> 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


>>>
>>

Re: Usage of G1 Garbage collector

[Spico Florin]

than you very much for sharing these. i hope that others will contribute.
regards,
florin

On Friday, June 3, 2016, Stephen Powis  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.gospodne...@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 > > 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
>>>
>>>
>>
>

Re: Usage of G1 Garbage collector

[Stephen Powis]

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  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 
> 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
>>
>>
>

Re: Usage of G1 Garbage collector

[Otis Gospodnetić]

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  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
>
>

Fwd: Usage of G1 Garbage collector

[Spico Florin]

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

Usage of G1 Garbage collector

[Spico Florin]

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