Bug 139582
| Summary: | NFS client doesn't push aio requests aggressively | ||||||
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| Product: | Red Hat Enterprise Linux 3 | Reporter: | Chuck Lever <cel> | ||||
| Component: | kernel | Assignee: | Steve Dickson <steved> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | Brian Brock <bbrock> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3.0 | CC: | petrides, riel, steved, xdl-redhat-bugzilla | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2007-10-19 19:14:02 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 106843 [details]
NFS client now pushes queued aio requests immediately
For your review and comment
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. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041111 Firefox/1.0 Description of problem: When using aio with NFS files, performance is terrible, or the application never completes. The problem is because the NFS client doesn't push out reads or writes after they are queued by aio. Version-Release number of selected component (if applicable): kernel-2.4.21-20.EL How reproducible: Always Steps to Reproduce: 1. See 137830 and use OraSim 2. 3. Actual Results: OraSim reports "FATAL: Async I/O queue still jammed after 10000 milliseconds" or other errors that suggests I/O is not progressing. Expected Results: OraSim should run with performance as good as or better than with normal I/O, without error. Additional info: nfs_kvec_read and nfs_kvec_write should flush queued read and write requests after generic_file_kvec_* returns.