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Make mirror log time query a bit more efficient

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We don't need the full mirror log objects; we just need a very small
subset of values from them here to do the required math and object
building.

Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Dan McGee 2012-10-10 20:17:55 -05:00
parent ddb7f4825f
commit f0b7e73de6
1 changed files with 6 additions and 4 deletions
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10
mirrors/utils.py
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@ -50,12 +50,14 @@ def get_mirror_statuses(cutoff=DEFAULT_CUTOFF):
# The Django ORM makes it really hard to get actual average delay in the
# above query, so run a seperate query for it and we will process the
# results here.
times = MirrorLog.objects.filter(is_success=True, last_sync__isnull=False,
times = MirrorLog.objects.values_list(
'url_id', 'check_time', 'last_sync').filter(
is_success=True, last_sync__isnull=False,
check_time__gte=cutoff_time)
delays = {}
for log in times:
delay = log.check_time - log.last_sync
delays.setdefault(log.url_id, []).append(delay)
for url_id, check_time, last_sync in times:
delay = check_time - last_sync
delays.setdefault(url_id, []).append(delay)
if urls:
last_check = max([u.last_check for u in urls])