#34746: High CPU/memory consumption when a 5XX is raised with large local
variables
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Reporter: Rémi Dupré | Owner: (none)
Type: Cleanup/optimization | Status: new
Component: Error reporting | Version: 4.2
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 1 | UI/UX: 0
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Comment (by Natalia Bidart):
After some experimentation following the suggested link to reprlib,
perhaps something like this could be a good alternative? (it needs better
code formatting, more reprlib limits sets and tests, of course)
{{{
#!diff
--- a/django/views/debug.py
+++ b/django/views/debug.py
@@ -347,12 +347,17 @@ class ExceptionReporter:
self.template_does_not_exist = True
self.postmortem = self.exc_value.chain or [self.exc_value]
+ import reprlib
+ repr_instance = reprlib.Repr()
+ repr_instance.maxstring = 5000
+ repr_instance.maxlist = 1000
+
frames = self.get_traceback_frames()
for i, frame in enumerate(frames):
if "vars" in frame:
frame_vars = []
for k, v in frame["vars"]:
- v = pprint(v)
+ v = repr_instance.repr(v)
# Trim large blobs of data
if len(v) > 4096:
v = "%s… <trimmed %d bytes string>" % (v[0:4096],
len(v))
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/34746#comment:3>
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