Bug 459397
Summary: | Cannot create more than 1024 nfsd threads | ||||||
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Product: | Red Hat Enterprise Linux 5 | Reporter: | Jeff Layton <jlayton> | ||||
Component: | kernel | Assignee: | Jeff Layton <jlayton> | ||||
Status: | CLOSED ERRATA | QA Contact: | Red Hat Kernel QE team <kernel-qe> | ||||
Severity: | high | Docs Contact: | |||||
Priority: | high | ||||||
Version: | 5.2 | CC: | emcnabb, imatusov, mgahagan, pasteur, pbenas, riek, staubach, steved, tao, yanwang | ||||
Target Milestone: | rc | ||||||
Target Release: | --- | ||||||
Hardware: | All | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2009-09-02 08:26:10 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: | |||||||
Bug Depends On: | |||||||
Bug Blocks: | 456229, 483701, 485920 | ||||||
Attachments: |
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Description
Jeff Layton
2008-08-18 13:31:07 UTC
Upstream patch has been modified some and taken into Bruce Fields' git tree. It looks like it'll be on track for 2.6.28. Created attachment 326768 [details]
patchset -- overhaul knfsd readahead cache
I went back through the patch archives and pulled out a couple of other patches that might be useful here. They also make it so that the upstream patch applies cleanly to RHEL.
This set changes the readahead cache to use more granular locking which supposedly reduces CPU utilization on heavily loaded SMP NFS servers (mostly due to spinlock contention). This will need to be well tested, but it looks like a reasonable change to consider.
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. in kernel-2.6.18-131.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5 Please do NOT transition this bugzilla state to VERIFIED until our QE team has sent specific instructions indicating when to do so. However feel free to provide a comment indicating that this fix has been verified. Updating PM score. 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-2009-1243.html |