Change auto-deletion throttling constants to better scale with server…

… size (mastodon#23320)

app/workers/scheduler/accounts_statuses_cleanup_scheduler.rb

@@ -7,36 +7,30 @@ class Scheduler::AccountsStatusesCleanupScheduler
   # This limit is mostly to be nice to the fediverse at large and not
   # generate too much traffic.
   # This also helps limiting the running time of the scheduler itself.
-  MAX_BUDGET         = 50
+  MAX_BUDGET         = 150
 
   # This is an attempt to spread the load across instances, as various
   # accounts are likely to have various followers.
   PER_ACCOUNT_BUDGET = 5
 
   # This is an attempt to limit the workload generated by status removal
   # jobs to something the particular instance can handle.
-  PER_THREAD_BUDGET  = 5
+  PER_THREAD_BUDGET  = 6
 
   # Those avoid loading an instance that is already under load
-  MAX_DEFAULT_SIZE    = 2
+  MAX_DEFAULT_SIZE    = 200
   MAX_DEFAULT_LATENCY = 5
-  MAX_PUSH_SIZE       = 5
+  MAX_PUSH_SIZE       = 500
   MAX_PUSH_LATENCY    = 10
+
   # 'pull' queue has lower priority jobs, and it's unlikely that pushing
   # deletes would cause much issues with this queue if it didn't cause issues
   # with default and push. Yet, do not enqueue deletes if the instance is
   # lagging behind too much.
-  MAX_PULL_SIZE       = 500
-  MAX_PULL_LATENCY    = 300
-
-  # This is less of an issue in general, but deleting old statuses is likely
-  # to cause delivery errors, and thus increase the number of jobs to be retried.
-  # This doesn't directly translate to load, but connection errors and a high
-  # number of dead instances may lead to this spiraling out of control if
-  # unchecked.
-  MAX_RETRY_SIZE = 50_000
+  MAX_PULL_SIZE       = 10_000
+  MAX_PULL_LATENCY    = 5.minutes.to_i
 
-  sidekiq_options retry: 0, lock: :until_executed
+  sidekiq_options retry: 0, lock: :until_executed, lock_ttl: 1.day.to_i
 
   def perform
     return if under_load?
@@ -73,8 +67,6 @@ def compute_budget
   end
 
   def under_load?
-    return true if Sidekiq::Stats.new.retry_size > MAX_RETRY_SIZE
-
     queue_under_load?('default', MAX_DEFAULT_SIZE, MAX_DEFAULT_LATENCY) || queue_under_load?('push', MAX_PUSH_SIZE, MAX_PUSH_LATENCY) || queue_under_load?('pull', MAX_PULL_SIZE, MAX_PULL_LATENCY)
   end
 

spec/workers/scheduler/accounts_statuses_cleanup_scheduler_spec.rb

@@ -25,7 +25,6 @@
       },
     ]
   end
-  let(:retry_size) { 0 }
 
   before do
     queue_stub = double
@@ -35,7 +34,6 @@
     allow(Sidekiq::ProcessSet).to receive(:new).and_return(process_set_stub)
 
     sidekiq_stats_stub = double
-    allow(sidekiq_stats_stub).to receive(:retry_size).and_return(retry_size)
     allow(Sidekiq::Stats).to receive(:new).and_return(sidekiq_stats_stub)
 
     # Create a bunch of old statuses
@@ -72,14 +70,6 @@
         expect(subject.under_load?).to be true
       end
     end
-
-    context 'when there is a huge amount of jobs to retry' do
-      let(:retry_size) { 1_000_000 }
-
-      it 'returns true' do
-        expect(subject.under_load?).to be true
-      end
-    end
   end
 
   describe '#get_budget' do