Bug 456983
| Summary: | fingerprinting has gone from bad to AIYEEEEE | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Bill Nottingham <notting> |
| Component: | rpm | Assignee: | Panu Matilainen <pmatilai> |
| Status: | CLOSED RAWHIDE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | rawhide | CC: | ffesti, jnovy, n3npq, pnasrat, quantumburnz, rvokal |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-10-28 19:43:07 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
Bill Nottingham
2008-07-29 02:15:21 UTC
Hmm, I haven't seen any significant difference in fingerprinting (or otherwise) memory use between 4.4.x and the new version. The fp code is untouched except for alloca() elimination and such. I can reproduce rpm memory use exploding on fingerprinting easily enough, but all the cases I've seen so far explode on both 4.4.x and 4.5.90. It'd be helpful if you can test whether rpm 4.4.x survives the same operation on same hw and packageset so I know if I'm actually looking for a regression. I couldn't reproduce it in a third try, so that's going to make it difficult. no reproducer != fixed I can hazard a guess: Fingerprints are heavily used when multiple kernel-devel packages are installed, and the malloc assertion failure is dependent on retrieving reliable rpmdb data. There's a class of problems with __db* cache inconsistency, and NPTL locking, that have x86_64 as the only obvious correlate (to me). E.g. see bz #455681 and a long line of other bug reports from Orion on x86_64. The platform in this report is also "x86_64" judging from the reported installed rpm version. Failures with cache inconsistency are dramatically different, and with no simple reproducers, yes. But there still appears to be a NPTL locking issue with rpmdb's on x86_64 imho. Have you run into this problem again Bill? Panu, would you like this to be assigned to you to look at still or should it be closed if Bill can't recreate the problem again? I believe this has been addressed upstream in a recent commit. I'll reopen if it comes back. The fingerprinting issue is unlikely to be resolved by any timestamp imposed by bugzilla. The issue is a fundamental design flaw dating back to RHL 6.0 and rpm-3.0 that is nowhere near being "fixed" anywhere. Perhaps bugzilla is not the right place to track design flaws in rpm. But if notting can't reproduce, the symptom was surely cured long ago. |