Bug 803985
| Summary: | [virtio-win][balloon]the speed of enlarging memory is much faster than the speed of evicting memory | ||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | Mike Cao <bcao> |
| Component: | virtio-win | Assignee: | Vadim Rozenfeld <vrozenfe> |
| Status: | CLOSED NOTABUG | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 6.2 | CC: | acathrow, amit.shah, bsarathy, dawu, mdeng, michen, rhod |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2012-03-18 11:01:37 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
Mike Cao
2012-03-16 08:25:36 UTC
(In reply to comment #0) > Description of problem: > > > Version-Release number of selected component (if applicable): > 2.6.32-252.el6.x86_64 > qemu-kvm-0.12.1.2-2.248.el6rhev.x86_64 > virtio-win-prewhql-23 > > > How reproducible: > 100% > > Steps to Reproduce: > 1.start guest with -m 8G > 2.(qemu)balloon 1024 > 3.after step ,(qemu)balloon 8192 > > Actual results: > the speed of evicting memory is 53MB/Sec > the speed of enlarging memroy is 700MB/Sec > > Expected results: > the speed of evicting memory and enlaring memory should be same . Let me disagree, allocating memory from and releasing memory to non-paged pool are not equal process in any terms. So you cannot expect both of them to be performed at the same speed. BTW, while allocating (ballon inflating) speed will vary, depending on the balloon size, size of free memory, and system load. Best regards, Vadim. > > > Additional info: |