Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-24 Thread Otis Gospodnetic
Yup, known stuff, on TODO. Otis -- Solr & ElasticSearch Support -- http://sematext.com/ Performance Monitoring -- http://sematext.com/spm On Mon, Jun 24, 2013 at 12:50 PM, Walter Underwood wrote: > Interesting. It seems to spend more time in GC, but the major GCs aren't any > faster. They are

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-24 Thread Walter Underwood
Interesting. It seems to spend more time in GC, but the major GCs aren't any faster. They are more consistent. I notice that SPM shows average collection time. This is not a particularly useful number. It should use median and percentiles. For a one-sided distribution, never use mean (average),

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-24 Thread Otis Gospodnetic
And here is our most recent experience with G1, although not with Solr, but with HBase: http://blog.sematext.com/2013/06/24/g1-cms-java-garbage-collector/ Otis -- Solr & ElasticSearch Support -- http://sematext.com/ Performance Monitoring -- http://sematext.com/spm On Fri, Jun 21, 2013 at 11:3

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-21 Thread Walter Underwood
On 6/20/2013 10:22 PM, William Bell wrote: > It would be good to see some CMS configs too... Can you send your java > params? Here is what we use in production. We run multiple collections with small documents. One is 3M docs, one is 9M, one is 2M, and the other three are small. We use Amazon m

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-21 Thread Shawn Heisey
On 6/20/2013 10:22 PM, William Bell wrote: > It would be good to see some CMS configs too... Can you send your java > params? I've got it documented on my personal wiki page: https://wiki.apache.org/solr/ShawnHeisey#GC_Tuning Thanks, Shawn

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-20 Thread Bernd Fehling
Hi Shawn, some good information about G1 tuning, may be something for the wiki about GC tuning. Am 20.06.2013 18:01, schrieb Shawn Heisey: > On 6/20/2013 8:02 AM, John Nielsen wrote: > ... > ... When you take a look at the overall stats and the memory graph over time, > G1 looks way better. > U

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-20 Thread William Bell
It would be good to see some CMS configs too... Can you send your java params? On Wed, Jun 19, 2013 at 8:46 PM, Shawn Heisey wrote: > On 6/19/2013 4:18 PM, Timothy Potter wrote: > > I'm sure there's some site to do this but wanted to get a feel for > > who's running Solr 4 on Java 7 with G1 gc

RE: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-20 Thread Petersen, Robert
ilto:thelabd...@gmail.com] Sent: Thursday, June 20, 2013 9:22 AM To: solr-user@lucene.apache.org Subject: Re: Informal poll on running Solr 4 on Java 7 with G1GC Awesome info, thanks Shawn! I'll post back my results with G1 after we've had some time to analyze it in production. On T

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-20 Thread Timothy Potter
Awesome info, thanks Shawn! I'll post back my results with G1 after we've had some time to analyze it in production. On Thu, Jun 20, 2013 at 11:01 AM, Shawn Heisey wrote: > On 6/20/2013 8:02 AM, John Nielsen wrote: >> >> We used to use G1, but recently went back to CMS. >> >> G1 gave us too long

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-20 Thread Shawn Heisey
On 6/20/2013 8:02 AM, John Nielsen wrote: We used to use G1, but recently went back to CMS. G1 gave us too long stop-the-world events. CMS uses more ressources for the same work, but it is more predictable and we get better worst-case performance out of it. This is exactly the behavior I saw.

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-20 Thread John Nielsen
We used to use G1, but recently went back to CMS. G1 gave us too long stop-the-world events. CMS uses more ressources for the same work, but it is more predictable and we get better worst-case performance out of it. Med venlig h

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-20 Thread Bernd Fehling
Am 20.06.2013 00:18, schrieb Timothy Potter: > I'm sure there's some site to do this but wanted to get a feel for > who's running Solr 4 on Java 7 with G1 gc enabled? > > Cheers, > Tim > Currently using Solr 4.2.1 in production with Oracle Java(TM) SE Runtime Environment (build 1.7.0_07-b10) an

Re: Informal poll on running Solr 4 on Java 7 with G1GC

2013-06-19 Thread Shawn Heisey
On 6/19/2013 4:18 PM, Timothy Potter wrote: > I'm sure there's some site to do this but wanted to get a feel for > who's running Solr 4 on Java 7 with G1 gc enabled? I have tried it, but found that G1 didn't give me any better GC pause characteristics than CMS without tuning, and may have actually