Bug 1285624
| Summary: | AIO is processing only 1 request, even if >1 requests in virtio | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Stefan Hajnoczi <stefanha> |
| Component: | qemu-kvm-rhev | Assignee: | Stefan Hajnoczi <stefanha> |
| Status: | CLOSED DUPLICATE | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.2 | CC: | atheurer, huding, jherrman, jkurik, juzhang, knoel, mrezanin, mst, psuriset, stefanha, virt-bugs, virt-maint, xfu |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-rhev-2.5.0-1.el7 | Doc Type: | Bug Fix |
| Doc Text: |
When QEMU was configured with the aio=native parameter, KVM virtual machines were slowed significantly. With this update, asynchronous I/O (AIO) can correctly process more than one request at a time, and using aio=native no longer has a negative impact on guest performance.
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Story Points: | --- |
| Clone Of: | 1243548 | Environment: | |
| Last Closed: | 2016-03-17 07:33:27 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1243548 | ||
| Bug Blocks: | |||
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Comment 2
Stefan Hajnoczi
2015-11-26 08:37:24 UTC
Setting RHEL 7.2.z flag. For RHEL 7.3, please see bz#1243548. |