diff options
Diffstat (limited to 'lib/gitlab/sidekiq_middleware/memory_killer.rb')
-rw-r--r-- | lib/gitlab/sidekiq_middleware/memory_killer.rb | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/lib/gitlab/sidekiq_middleware/memory_killer.rb b/lib/gitlab/sidekiq_middleware/memory_killer.rb deleted file mode 100644 index b89ae2505c9..00000000000 --- a/lib/gitlab/sidekiq_middleware/memory_killer.rb +++ /dev/null @@ -1,67 +0,0 @@ -module Gitlab - module SidekiqMiddleware - class MemoryKiller - # Default the RSS limit to 0, meaning the MemoryKiller is disabled - MAX_RSS = (ENV['SIDEKIQ_MEMORY_KILLER_MAX_RSS'] || 0).to_s.to_i - # Give Sidekiq 15 minutes of grace time after exceeding the RSS limit - GRACE_TIME = (ENV['SIDEKIQ_MEMORY_KILLER_GRACE_TIME'] || 15 * 60).to_s.to_i - # Wait 30 seconds for running jobs to finish during graceful shutdown - SHUTDOWN_WAIT = (ENV['SIDEKIQ_MEMORY_KILLER_SHUTDOWN_WAIT'] || 30).to_s.to_i - - # Create a mutex used to ensure there will be only one thread waiting to - # shut Sidekiq down - MUTEX = Mutex.new - - def call(worker, job, queue) - yield - - current_rss = get_rss - - return unless MAX_RSS > 0 && current_rss > MAX_RSS - - Thread.new do - # Return if another thread is already waiting to shut Sidekiq down - return unless MUTEX.try_lock - - Sidekiq.logger.warn "Sidekiq worker PID-#{pid} current RSS #{current_rss}"\ - " exceeds maximum RSS #{MAX_RSS} after finishing job #{worker.class} JID-#{job['jid']}" - Sidekiq.logger.warn "Sidekiq worker PID-#{pid} will stop fetching new jobs in #{GRACE_TIME} seconds, and will be shut down #{SHUTDOWN_WAIT} seconds later" - - # Wait `GRACE_TIME` to give the memory intensive job time to finish. - # Then, tell Sidekiq to stop fetching new jobs. - wait_and_signal(GRACE_TIME, 'SIGSTP', 'stop fetching new jobs') - - # Wait `SHUTDOWN_WAIT` to give already fetched jobs time to finish. - # Then, tell Sidekiq to gracefully shut down by giving jobs a few more - # moments to finish, killing and requeuing them if they didn't, and - # then terminating itself. - wait_and_signal(SHUTDOWN_WAIT, 'SIGTERM', 'gracefully shut down') - - # Wait for Sidekiq to shutdown gracefully, and kill it if it didn't. - wait_and_signal(Sidekiq.options[:timeout] + 2, 'SIGKILL', 'die') - end - end - - private - - def get_rss - output, status = Gitlab::Popen.popen(%W(ps -o rss= -p #{pid}), Rails.root.to_s) - return 0 unless status.zero? - - output.to_i - end - - def wait_and_signal(time, signal, explanation) - Sidekiq.logger.warn "waiting #{time} seconds before sending Sidekiq worker PID-#{pid} #{signal} (#{explanation})" - sleep(time) - - Sidekiq.logger.warn "sending Sidekiq worker PID-#{pid} #{signal} (#{explanation})" - Process.kill(signal, pid) - end - - def pid - Process.pid - end - end - end -end |