Bug 803976
Summary: | rpm and updatedb cause (temporary) system lockup | ||
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Product: | [Fedora] Fedora | Reporter: | Dov Grobgeld <dov.grobgeld> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | high | Docs Contact: | |
Priority: | unspecified | ||
Version: | 15 | CC: | ffesti, gansalmon, itamar, jforbes, jnovy, jonathan, kernel-maint, madhu.chinakonda, pmatilai |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | i386 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2012-07-11 17:51:29 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
Dov Grobgeld
2012-03-16 07:58:19 UTC
System freezes on rpm, updatedb or such are kernel land, reassigning. See the timings at https://bugzilla.redhat.com/show_bug.cgi?id=752897#c28 with different kernels - the test-case timing goes from 2m 39s to 7m 53s (ie nearly triples) depending on which kernel is running. That's quite a regression, apparently related to heavy IO. As for the rpm part, make sure you're using this update which migitates the issue somewhat: https://admin.fedoraproject.org/updates/FEDORA-2012-1510/rpm-4.9.1.2-4.fc15 I just installed that update and it made a *huge* difference in response time for rpm! :-) Now we just need a similar fix for mlocate/updatedb. But we can consider this bug closed or a duplicate. The rpm update only helps to avoid triggering the worst-case scenario (whatever it is) by using a smaller cache for the rpm database. The case is not really closed until somebody figures out what has caused the severe IO performance degration in the more recent kernels (again, see the figures in bug 752897). Is this still happening with kernel-2.6.42.10-3.fc15 (in updates-testing)? 2.6.41.10-3.fc15 is actually quite old, several things have been fixed in that time, including several security issues. I updated to kernel-2.6.42.10-3.fc15 and the result was as follows: * Running `updatedb` at the default nice level still caused firefox to be inaccessible for periods of roughly 5s. This is still much better than the behaviour I experienced before. * Running `updatedb` at nice level 19 (nicest level) causes no detectable interference in desktop use. Since I updated rpm I can no longer test its desktop influence. Do you need me to downgrade rpm to test without the latest workaround? Are you still seeing the updatedb issue with 2.6.43/3.3? Fedora 15 has reached it's end of life as of June 26, 2012. As a result, we will not be fixing any remaining bugs found in Fedora 15. In the event that you have upgraded to a newer release and the bug you reported is still present, please reopen the bug and set the version field to the newest release you have encountered the issue with. Before doing so, please ensure you are testing the latest kernel update in that release and attach any new and relevant information you may have gathered. Thank you for taking the time to file a report. We hope newer versions of Fedora suit your needs. |