Bug 639358
Summary: | GROUP_DYNAMIC_MACH_CONSTRAINT undocumented feature | ||
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Product: | Red Hat Enterprise MRG | Reporter: | Tomas Rusnak <trusnak> |
Component: | Grid_User_Guide | Assignee: | Alison Young <alyoung> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | Tomas Rusnak <trusnak> |
Severity: | medium | Docs Contact: | |
Priority: | low | ||
Version: | beta | CC: | iboverma, lbrindle, matt, rrati |
Target Milestone: | 2.1 | Keywords: | FutureFeature |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Enhancement | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2012-01-26 19:17:01 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: | 652506, 733205 | ||
Bug Blocks: |
Description
Tomas Rusnak
2010-10-01 14:32:40 UTC
*** Bug 634744 has been marked as a duplicate of this bug. *** From BZ#634744: Erik Erlandson 2010-09-27 12:58:29 EDT When the Hierarchical Fair Share (HFS) algorithm computes the number of slots it will give to each accounting group, it may include slots that cannot accept any matches during the subsequent negotiation. This may cause the first groups that negotiate to receive a disproportionate number of the actual matchable slots, and subvert the intention of HFS. The condor administrator may choose to mitigate this behavior by setting the GROUP_DYNAMIC_MACH_CONSTRAINT configuration parameter. GROUP_DYNAMIC_MACH_CONSTRAINT stores a boolean expression which is evaluated for each candidate slot. Slots for which this expression evaluates to True are considered by HFS. For example, one useful setting to focus HFS on matchable slots would be: GROUP_DYNAMIC_MACH_CONSTRAINT = (State != "Owner") && (Cpus > 0) This setting causes HFS to consider slots on machines which are currently unused, and which have CPUs to allocate. Another example is: GROUP_DYNAMIC_MACH_CONSTRAINT = (State == "Unclaimed") Which causes HFS to consider only unclaimed slots. Pushing to 2.1 due to time and resource constraints. Documentation changes confirmed on the bottom of 10.3. Hierarchical Fair Share (HFS) chapter. Revision 1-20 Thu Nov 03 2011 Alison Young BZ#639358 - GROUP_DYNAMIC_MACH_CONSTRAINT undocumented feature Revision info included. >>> VERIFIED This book is now available on redhat.com/docs. Please raise a new bug if you spot any issues. Thanks, LKB |