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authorDan McGee <dan@archlinux.org>2012-12-28 14:41:18 -0600
committerDan McGee <dan@archlinux.org>2012-12-28 14:48:29 -0600
commit20b64e42672d185821cc584dfa4b133ee259a144 (patch)
treee4ac17f704cc73eaeb1c806f09cb40b05da1de92 /main
parent29be1e06032ad8a0a38921b9e04be888141881b1 (diff)
Reduce query count when retrieving satisfiers and providers
Django doesn't attach the parent object to the child objects, even when queried through the related manager. This causes up to 3 extra queries: one to retrieve the package again, and one each for arch and repo retrieval. For a package like archboot, this drops the number of necessary queries for the package page from 805 to 222 (yes, this is still too high) and cuts the time spent waiting on the database from 505ms to 262ms. Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'main')
-rw-r--r--main/models.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/main/models.py b/main/models.py
index b3cc97e1..ba246458 100644
--- a/main/models.py
+++ b/main/models.py
@@ -271,10 +271,10 @@ class Package(models.Model):
arches = None
# TODO: we can use list comprehension and an 'in' query to make this more effective
for dep in self.depends.all():
- pkg = dep.get_best_satisfier()
+ pkg = dep.get_best_satisfier(self)
providers = None
if not pkg:
- providers = dep.get_providers()
+ providers = dep.get_providers(self)
deps.append({'dep': dep, 'pkg': pkg, 'providers': providers})
# sort the list; deptype sorting makes this tricker than expected
sort_order = {'D': 0, 'O': 1, 'M': 2, 'C': 3}