I am getting these troublesome `NoMemoryError: failed to allocate
memory` errors.
What is the best way to track down memory leaks on heroku?
Is there a way to print our the dyno memory usage while logging?
For those that want to know the specific issues that I am having, I am
having two ...
(1) Memcached / Dalli, throws this on fetch
@ad_option = Rails.cache.fetch(generate_key(:ad_option), expires_in:
1.minute) do
@ad.random_ad_option
end
See stack trace 1 below,
and (2) Mongoid / Mongo, throws this on a simple find
@ad = Ad.find(params[:ad_id])
See stack trace 2 below.
Any help will be greatly appreciated!
-- jonathan
Stack Trace 1 =========
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/dalli/server.rb:262:in
`dump'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/dalli/server.rb:262:in
`serialize'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/dalli/server.rb:155:in
`set'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/dalli/server.rb:46:in
`request'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/dalli/options.rb:18:in
`block in request'
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/dalli/options.rb:17:in
`request'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/dalli/client.rb:252:in
`perform'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/dalli/client.rb:132:in
`set'
(eval):7:in `block in set_with_newrelic_trace'
vendor/plugins/rpm/lib/new_relic/agent/method_tracer.rb:193:in
`trace_execution_scoped'
(eval):4:in `set_with_newrelic_trace'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/active_support/cache/
dalli_store.rb:138:in `write_entry'
.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/
cache/strategy/local_cache.rb:135:in `write_entry'
.bundle/gems/ruby/1.9.1/gems/dalli-1.1.2/lib/active_support/cache/
dalli_store.rb:176:in `write_entry'
.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/
cache.rb:364:in `block in write'
.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/
cache.rb:519:in `instrument'
.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/
cache.rb:362:in `write'
.bundle/gems/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/
cache.rb:299:in `fetch'
[PROJECT_ROOT]controllers/assets_controller.rb:37:in `load_creative'
[PROJECT_ROOT]controllers/assets_controller.rb:13:in `show'
Stack Trace 2 ========
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/connection.rb:
775:in `read_documents'
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/connection.rb:
727:in `receive'
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/connection.rb:
484:in `block in receive_message'
:
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/connection.rb:
482:in `receive_message'
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/cursor.rb:407:in
`block in send_initial_query'
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/connection.rb:
609:in `instrument'
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/cursor.rb:406:in
`send_initial_query'
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/cursor.rb:371:in
`refresh'
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/cursor.rb:87:in
`next_document'
.bundle/gems/ruby/1.9.1/gems/mongo-1.3.1/lib/mongo/collection.rb:
251:in `find_one'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
collections/master.rb:25:in `block in find_one'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
collections/retry.rb:29:in `retry_on_connection_failure'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
collections/master.rb:24:in `find_one'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
collection.rb:60:in `find_one'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
contexts/mongo.rb:164:in `first'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
criteria.rb:43:in `one'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
criterion/inclusion.rb:269:in `from_map_or_db'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
criterion/inclusion.rb:250:in `execute_or_raise'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
criterion/inclusion.rb:106:in `find'
.bundle/gems/ruby/1.9.1/bundler/gems/mongoid-30cb67343766/lib/mongoid/
finders.rb:83:in `find'
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