Bug 670063
| Summary: | pages stuck in ksm pages_volatile | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Qian Cai <qcai> |
| Component: | kernel | Assignee: | Andrea Arcangeli <aarcange> |
| Status: | CLOSED ERRATA | QA Contact: | Caspar Zhang <czhang> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 6.1 | CC: | aarcange, czhang, qcai, tburke |
| Target Milestone: | rc | Keywords: | Reopened |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | kernel-2.6.32-121.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-05-23 20:37:48 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: | |||
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Description
Qian Cai
2011-01-17 03:14:31 UTC
I assume you're using my last kernel build that should include the fix for this. The lru_add_drain_all happens only at the end of a full ksm scan. That means the bigger the memory size to scan, the less frequently the flush will happen. Before reading pages_volatile, can you wait /sys/kernel/mm/ksm/full_scans to increase 2 times? that may fix it if it was a timing issue because we only drain the lru at the end of the scan. Yes, you are right. I'll fix the test cases. fix posted to rhkernel-list Message-ID: <20110214163829.GF6494> This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. Patch(es) available on kernel-2.6.32-121.el6 An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2011-0542.html |