PollScheduler: disable default _loadavg_latency

Move the 30 second default to the Scheduler class, since that's the
only place that it's currently needed (all other schedulers have
relatively short-running jobs).

3 files changed, 10 insertions, 3 deletions

diff --git a/pym/_emerge/PollScheduler.py b/pym/_emerge/PollScheduler.py
index 1a81e2d17..d02b0dafc 100644
--- a/pym/_emerge/PollScheduler.py
+++ b/pym/_emerge/PollScheduler.py
@@ -15,7 +15,7 @@ from _emerge.getloadavg import getloadavg
 class PollScheduler(object):
 
 	# max time between loadavg checks (milliseconds)
-	_loadavg_latency = 30000
+	_loadavg_latency = None
 
 	def __init__(self, main=False, event_loop=None):
 		"""
diff --git a/pym/_emerge/Scheduler.py b/pym/_emerge/Scheduler.py
index 40033c2c3..3b55b2bdb 100644
--- a/pym/_emerge/Scheduler.py
+++ b/pym/_emerge/Scheduler.py
@@ -66,6 +66,9 @@ if sys.hexversion >= 0x3000000:
 
 class Scheduler(PollScheduler):
 
+	# max time between loadavg checks (milliseconds)
+	_loadavg_latency = 30000
+
 	# max time between display status updates (milliseconds)
 	_max_display_latency = 3000
 
@@ -1339,7 +1342,9 @@ class Scheduler(PollScheduler):
 	def _main_loop(self):
 		term_check_id = self._event_loop.idle_add(self._termination_check)
 		loadavg_check_id = None
-		if self._max_load is not None:
+		if self._max_load is not None and \
+			self._loadavg_latency is not None and \
+			(self._max_jobs is True or self._max_jobs > 1):
 			# We have to schedule periodically, in case the load
 			# average has changed since the last call.
 			loadavg_check_id = self._event_loop.timeout_add(
diff --git a/pym/portage/util/_async/AsyncScheduler.py b/pym/portage/util/_async/AsyncScheduler.py
index c6a37f59e..182e19ee8 100644
--- a/pym/portage/util/_async/AsyncScheduler.py
+++ b/pym/portage/util/_async/AsyncScheduler.py
@@ -66,7 +66,9 @@ class AsyncScheduler(AsynchronousTask, PollScheduler):
 
 	def _start(self):
 		self._term_check_id = self._event_loop.idle_add(self._termination_check)
-		if self._max_load is not None:
+		if self._max_load is not None and \
+			self._loadavg_latency is not None and \
+			(self._max_jobs is True or self._max_jobs > 1):
 			# We have to schedule periodically, in case the load
 			# average has changed since the last call.
 			self._loadavg_check_id = self._event_loop.timeout_add(