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https://issues.apache.org/jira/browse/DTACLOUD-290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13426512#comment-13426512
]
Michal Fojtik commented on DTACLOUD-290:
----------------------------------------
Hi,
After some debugging we tried this patch that seems to solve the problem of
memory growing. However, the memory usage after first request still jump to
1.5gb.
diff --git a/server/lib/deltacloud/helpers/driver_helper.rb
b/server/lib/deltacloud/helpers/driver_helper.r
index 5c5e7c6..96fd1d7 100644
--- a/server/lib/deltacloud/helpers/driver_helper.rb
+++ b/server/lib/deltacloud/helpers/driver_helper.rb
@@ -49,8 +49,12 @@ module Deltacloud::Helpers
def driver
$:.unshift File.join(File.dirname(__FILE__), '..', '..')
begin
- require_relative driver_source_name
- driver_class
+ @@driver ||= nil
+ unless @@driver
+ puts "Loading driver..."
+ require_relative driver_source_name
+ end
+ @@driver ||= driver_class
rescue LoadError => e
raise "[ERROR] The driver '#{driver_name}' is unknown or not installed
(#{driver_source_name})\n"
"\n#{e.message}\n"
> Memory leaking on Fedora 17
> ---------------------------
>
> Key: DTACLOUD-290
> URL: https://issues.apache.org/jira/browse/DTACLOUD-290
> Project: DeltaCloud
> Issue Type: Bug
> Components: Server
> Environment: deltacloud-core-1.0.0-4.fc17.noarch (though same issue
> with dc-core from git)
> sinatra (1.3.2)
> sinatra-rabbit (1.0.6)
> Fedora 17
> Reporter: Jan Provaznik
> Priority: Critical
>
> Memory used by deltacloudd process increases with time. After 12 hours, it's
> common it uses ~4G of virt memory and >1G of physical memory (only
> conductor's dbomatic script which periodically checks running instances every
> minute was running).
> You can reproduce the memory leak by this simple script:
> #!/usr/bin/ruby
>
> require 'rubygems'
>
> require 'deltacloud'
>
> 1000.times do |i| { DeltaCloud.new('mockuser', 'mockpassword',
> 'http://localhost:3002/api') }
> Used memory will increase by >10M (both virt and physical). The problem is
> probably with lambda in check_capability usage in
> lib/deltacloud/collections/* files:
> check_capability :for => lambda { |m| driver.respond_to? m }
> if the lambda is replaced by true or other static value, the memory usage
> remains constant.
> I see that in git the 'check_capability' call was replaced by 'set' call,
> this change has no influence on this problem.
> Also it's weird that after starting deltacloudd, used memory is 233m/33m
> (virt/res), but after first request, used memory jumps to 776m/90m (virt/res)
> - this is far more than on Fedora 16, where used memory remains around
> 160m/50m.
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