https://bugzilla.redhat.com/show_bug.cgi?id=1193177
Bug ID: 1193177
Summary: sqlite3_drv bad memory free and severe performance bug
- with patch
Product: Fedora EPEL
Version: el6
Component: dspam
Severity: medium
Assignee: nathan...@gnat.ca
Reporter: stu...@gathman.org
QA Contact: extras...@fedoraproject.org
CC: nathan...@gnat.ca, perl-devel@lists.fedoraproject.org
Created attachment 992325
--> https://bugzilla.redhat.com/attachment.cgi?id=992325&action=edit
Patch for problems reported
Description of problem:
The dspam sqlite3_drv runs in auto_commit mode, resulting in 1000s of
transactions on a single email - rendering it unusably slow. Further, it
crashes on sql errors (include expected failures such as with
_ds_verify_signature) because it uses the system free() on the error message
from sqlite3, instead of sqlite3_free().
Version-Release number of selected component (if applicable):
dspam-3.10.2-4.el6.x86_64
How reproducible:
always
Steps to Reproduce:
1. run dspam_train with sqlite3 configured to see performance bug.
2. verify_signature error can be seen eventually in normal operation, but more
quickly with the pydspam-1.3 test suite, with Dspam.py modified to load the
sqlite3 driver (one line change). Apply the performance bug fix first - or it
will be a while...
3.
Actual results:
Unusably slow, and crashes on verify_signature when signature does not exist.
Expected results:
Reasonable performance, and no crashes.
Additional info:
https://pypi.python.org/pypi?%3Aaction=pkg_edit&name=pydspam
Patch to fix the problems attached.
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