Bug 111514
| Summary: | [PATCH] incorrect HighTotal field in /proc/meminfo | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Ken Chen <kenneth.w.chen> | ||||
| Component: | kernel | Assignee: | Anil S Keshavamurthy <akeshava> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | Brian Brock <bbrock> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3.0 | CC: | grgustaf, jbaron, kaccardi, peterm, petrides, riel | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | ia64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2007-10-19 19:32:28 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: | |||||||
| Attachments: |
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Created attachment 96348 [details]
not to count boot time reserved page as totalhigh_pages
This bug is filed against RHEL 3, which is in maintenance phase. During the maintenance phase, only security errata and select mission critical bug fixes will be released for enterprise products. Since this bug does not meet that criteria, it is now being closed. For more information of the RHEL errata support policy, please visit: http://www.redhat.com/security/updates/errata/ If you feel this bug is indeed mission critical, please contact your support representative. You may be asked to provide detailed information on how this bug is affecting you. |
On DIG compliant platform like tiger4 machine, physical memory are partitioned into DMA and HIGHMEM zones. The count_highmem_pages function incorrectly count all boot time reserved page as part of total highmem page. As a result, causing inflated highmem total reported in /proc/meminfo. The LowTotal field in /proc/meminfo is calculated as totalram_page - totalhigh_pages. Since total high is inflated, it cause total low to be under count and on some machine, we observed that low total is less than low free from /proc/meminfo. Version-Release number of selected component (if applicable): kernel-2.4.21-4.EL How reproducible: Always Steps to Reproduce: 1. on any tiger4 or DIG compliant ia64 machine with large amount of memory 2. cat /proc/meminfo 3. Actual Results: MemTotal: 262361248 kB MemFree: 93100976 kB MemShared: 0 kB Buffers: 9824 kB Cached: 64496 kB SwapCached: 0 kB Active: 75872 kB ActiveAnon: 10992 kB ActiveCache: 64880 kB Inact_dirty: 9440 kB Inact_laundry: 0 kB Inact_clean: 0 kB Inact_target: 17056 kB HighTotal: 260570320 kB HighFree: 90778928 kB LowTotal: 1790928 kB LowFree: 2322048 kB SwapTotal: 2040208 kB SwapFree: 2040208 kB Expected Results: LowTotal to be equal or greater than LowFree field Additional info: