Bruno: You can also reduce your memory requirements by storing fewer unique values. All the _unique_ values for a field in the index are read in for sorting. People often store timestamps in milliseconds, which essentially means that every document has a unique value.
Storing your timestamps in the coarsest granularity that suits your use-case is always a good idea, see the date math: http://lucene.apache.org/solr/api-4_0_0-ALPHA/org/apache/solr/util/DateMathParser.html Best Erick On Wed, Jul 11, 2012 at 12:44 PM, Yury Kats <yuryk...@yahoo.com> wrote: > This solves the problem by allocating memory up front, instead of at some > point later when JVM needs it. At that later point in time there may not > be enough free memory left on the system to allocate. > > On 7/11/2012 11:04 AM, Michael Della Bitta wrote: >> There is a school of thought that suggests you should always set Xms >> and Xmx to the same thing if you expect your heap to hit Xms. This >> results in your process only needing to allocate the memory once, >> rather in a series of little allocations as the heap expands. >> >> I can't explain how this fixed your problem, but just a datapoint that >> might suggest that doing what you did is not such a bad thing. >> >> Michael Della Bitta >> >> ------------------------------------------------ >> Appinions, Inc. -- Where Influence Isn’t a Game. >> http://www.appinions.com >> >> >> On Wed, Jul 11, 2012 at 4:05 AM, Bruno Mannina <bmann...@free.fr> wrote: >>> Hi, some news this morning... >>> >>> I added -Xms1024m option and now it works?! no outofmemory ?! >>> >>> java -jar -Xms1024m -Xmx2048m start.jar >>> >>> Le 11/07/2012 09:55, Bruno Mannina a écrit : >>> >>>> Hi Yury, >>>> >>>> Thanks for your anwer. >>>> >>>> ok for to increase memory but I have a problem with that, >>>> I have 8Go on my computer but the JVM accepts only 2Go max with the option >>>> -Xmx >>>> is it normal? >>>> >>>> Thanks, >>>> Bruno >>>> >>>> Le 11/07/2012 03:42, Yury Kats a écrit : >>>>> >>>>> Sorting is a memory-intensive operation indeed. >>>>> Not sure what you are asking, but it may very well be that your >>>>> only option is to give JVM more memory. >>>>> >>>>> On 7/10/2012 8:25 AM, Bruno Mannina wrote: >>>>>> >>>>>> Dear Solr Users, >>>>>> >>>>>> Each time I try to do a request with &sort=pubdate+desc.... >>>>>> >>>>>> I get: >>>>>> GRAVE: java.lang.OutOfMemoryError: Java heap space >>>>>> >>>>>> I use Solr3.6, I have around 80M docs and my request gets around 160 >>>>>> results. >>>>>> >>>>>> Actually for my test, i use jetty >>>>>> >>>>>> java -jar -Xmx2g start.jar >>>>>> >>>>>> PS: If I write 3g i get an error, I have 8go Ram >>>>>> >>>>>> Thanks a lot for your help, >>>>>> Bruno >>>>>> >>>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> >>> >>> >> > >
