Sunspot-solr is eating up too much memory? What's a convenient way to reduce memory usage?

So it seems Sunspot-Solr is eating a lot of memory up. And its probably due to my malpractice as a programmer allocating proper usage of it.

First of all, I do not allow sunspot to reindex by itself.

searchable :auto_index => false do

This alone I believe is preventing it from reindexing. Instead I run the reindex process on a cron-tab that runs once a day in the early morning.

The reason I started doing this, was because as the application scaled, the data seemed to sitting so heavily on the machine that it would take quite awhile just to simply load the homepage.

What am I doing wrong to cause the error below? And what can I do better?

Error in question:

ActionView::TemplateError (Solr Response: Lock_obtain_timed_out_NativeFSLocktmpindexlucenede61b2c77401967646cf8916982a09a0writelock__orgapachelucenestoreLockObtainFailedException_Lock_obtain_timed_out_NativeFSLocktmpindexlucenede61b2c77401967646cf8916982a09a0writelock__at_orgapachelucenestoreLockobtainLockjava85__at_orgapacheluceneindexIndexWriterinitIndexWriterjava1545__at_orgapacheluceneindexIndexWriterinitIndexWriterjava1402__at_orgapachesolrupdateSolrIndexWriterinitSolrIndexWriterjava190__at_orgapachesolrupdateUpdateHandlercreateMainIndexWriterUpdateHandlerjava98__at_orgapachesolrupdateDirectUpdateHandler2openWriterDirectUpdateHandler2java173__at_orgapachesolrupdateDirectUpdateHandler2addDocDirectUpdateHandler2java220__at_orgapachesolrupdateprocessorRunUpdateProcessorprocessAddRunUpdateProcessorFactoryjava61__at_orgapachesolrhandlerXMLLoaderprocessUpdateXMLLoaderjava139__at_orgapachesolrhandlerXMLLoaderloadXMLLoaderjava69__at_orgapachesolrhandlerContentStreamHandlerBasehandleRequestBodyContentStreamHandlerBasejava54__at_orgapachesolrhandlerRequestHandlerBasehandleRequestRequestHandlerBasejava131__at_orgapachesolrcoreSolrCoreexecuteSolrCorejava1316__at_orgapachesolrservletSolrDispatchF开发者_运维百科ilterexecuteSolrDispatchFilterjava338__at_orgapachesolrservletSolrDispatchFilterdoFilterSolrDispatchFilterjava241__at_orgmortbayjettyservletServletHandler$CachedChaindoFilterServletHandlerjava1089__at_orgmortbayjettyservletServletHandlerhandleServletHandlerjava365__at_orgmortbayjettysecuritySecurityHandlerhandleSecurityHandlerjava216__at_orgmortbayjettyservletSessionHandlerhandleSessionHandlerjava181__at_orgmortbayjettyhandlerContextHandlerhandleContextHandlerjava712__at_orgmortbayjettywebappWebAppContexthandleWebAppContextjava405__at_orgmortbayjettyhandlerContextHandlerCollectionhandleContextHandlerCollectionjava211__at_orgmortbayjettyhandlerHand) on line #24 of app/views/main/_main_nav.html.haml:
21:         %br
22:         community calendars
23: 
24:   - if (current_user.blank? || current_user.card_signup.blank?)
25:     %li
26:       - if current_user.blank?
27:         = link_to 'Get Your HQcard', signup_path, :title => "Signup for your free HQcard and redeem local deals and promotions."

    rsolr (0.12.1) [v] lib/rsolr/connection/requestable.rb:39:in `request'
    rsolr (0.12.1) [v] lib/rsolr/client.rb:34:in `request_without_rails_logging'
    /usr/lib/ruby/gems/1.8/gems/sunspot_rails-1.2.1/lib/sunspot/rails/solr_logging.rb:25:in `request'
    /usr/lib/ruby/gems/1.8/gems/sunspot_rails-1.2.1/lib/sunspot/rails/solr_logging.rb:24:in `request'
    rsolr (0.12.1) [v] lib/rsolr/client.rb:22:in `update'
    rsolr (0.12.1) [v] lib/rsolr/client.rb:46:in `add'
    sunspot (1.2.1) lib/sunspot/indexer.rb:101:in `add_documents'
    sunspot (1.2.1) lib/sunspot/indexer.rb:26:in `add'
    sunspot (1.2.1) lib/sunspot/session.rb:91:in `index'
    sunspot (1.2.1) lib/sunspot/session_proxy/abstract_session_proxy.rb:11:in `index'
    sunspot (1.2.1) lib/sunspot.rb:175:in `index'
    /usr/lib/ruby/gems/1.8/gems/sunspot_rails-1.2.1/lib/sunspot/rails/searchable.rb:349:in `solr_index'
    /usr/lib/ruby/gems/1.8/gems/sunspot_rails-1.2.1/lib/sunspot/rails/searchable.rb:405:in `maybe_auto_index'
    vendor/gems/binarylogic-authlogic-2.1.1/lib/authlogic/acts_as_authentic/session_maintenance.rb:73:in `save_without_session_maintenance'
    vendor/gems/binarylogic-authlogic-2.1.1/lib/authlogic/session/callbacks.rb:83:in `save_record'
    vendor/gems/binarylogic-authlogic-2.1.1/lib/authlogic/session/priority_record.rb:30:in `save_record'
    vendor/gems/binarylogic-authlogic-2.1.1/lib/authlogic/session/persistence.rb:60:in `persisting?'
    vendor/gems/binarylogic-authlogic-2.1.1/lib/authlogic/session/persistence.rb:39:in `find'
    app/controllers/application_controller.rb:23:in `current_user_session'
    app/controllers/application_controller.rb:28:in `current_user'
    (eval):2:in `send'
    (eval):2:in `current_user'
    app/views/main/_main_nav.html.haml:24:in `_run_haml_app47views47main47_main_nav46html46haml_locals_main_nav_object'
    haml (2.2.2) [v] lib/haml/helpers/action_view_mods.rb:11:in `render'
    haml (2.2.2) [v] lib/haml/helpers.rb:96:in `non_haml'
    haml (2.2.2) [v] lib/haml/helpers/action_view_mods.rb:11:in `render'
    app/views/main/index.html.haml:2:in `_run_haml_app47views47main47index46html46haml'
    haml (2.2.2) [v] lib/haml/helpers/action_view_mods.rb:13:in `render'
    haml (2.2.2) [v] lib/haml/helpers/action_view_mods.rb:13:in `render'
    haml (2.2.2) [v] rails/./lib/sass/plugin/rails.rb:19:in `process'
    lib/flash_session_cookie_middleware.rb:14:in `call'
    vendor/gems/hoptoad_notifier-2.2.2/lib/hoptoad_notifier/rack.rb:27:in `call'

You can specify minimum and maximum memory allocation as per the current environment in your config/sunspot.yml file, e.g.

development:
  solr:
    min_memory: 512M
    max_memory: 1G
    solr_jar: /path/to/start.jar
    log_level: DEBUG

Documentation: http://outoftime.github.com/sunspot/rails/docs/classes/Sunspot/Rails/Configuration.html

max_memory and min_memory was changed to memory in https://github.com/sunspot/sunspot/commit/74ea3881872398bd14cf6e96481826141ee82c93

So the current answers should be:

development:
  solr:
    memory: 1G
    solr_jar: /path/to/start.jar
    log_level: DEBUG

I reversed the Lucene engine execution and forced it to use 64 bit JVM which allowed it full access to all the memory available on my machine ...

Why would rake use 32bit JVM on 64 bit windows is beyond me ...

I'm now using sunspot:solr run script to execute manually:

cd \RailsInstaller\Ruby1.9.3\lib\ruby\gems\1.9.1\gems\sunspot_solr-2.1.0\solr\

java -d64 -Djetty.port=8982 -Dsolr.data.dir=C:/[your-project-dir]/solr/data/development -Dsolr.solr.home=solr -Djava.util.logging.config.file=C:/Users/[user-name]/AppData/Local/Temp/logging.properties20140117 -jar start.jar