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Posted to dev@cloudstack.apache.org by "vishesh92 (via GitHub)" <gi...@apache.org> on 2024/01/18 07:51:33 UTC
[PR] Document advance DRS settings [cloudstack-documentation]
vishesh92 opened a new pull request, #374:
URL: https://github.com/apache/cloudstack-documentation/pull/374
(no comment)
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Re: [PR] Document advance DRS settings [cloudstack-documentation]
Posted by "rohityadavcloud (via GitHub)" <gi...@apache.org>.
rohityadavcloud merged PR #374:
URL: https://github.com/apache/cloudstack-documentation/pull/374
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Re: [PR] Document advance DRS settings [cloudstack-documentation]
Posted by "sureshanaparti (via GitHub)" <gi...@apache.org>.
sureshanaparti commented on code in PR #374:
URL: https://github.com/apache/cloudstack-documentation/pull/374#discussion_r1466265836
##########
source/adminguide/clusters.rst:
##########
@@ -74,6 +74,30 @@ Following are the configuration parameters for DRS.
Very high value for ``drs.max.migrations`` can result in management server using up all of it's workers for DRS tasks
and not being able to execute other tasks.
+There are some advanced parameters that can be configured for DRS. These paramters impact the way imbalance is calculated
+for a cluster. Do not change these parameters unless you know what you are doing.
+
+.. list-table:: Advanced DRS related cluster parameters
+ :header-rows: 1
+
+ * - Parameter
+ - Default
+ - Description
+ * - ``drs.metric.type``
+ - `used`
+ - The metric type used to measure imbalance in a cluster. This can completely change the imbalance value.
+ Possible values are free, used.
+ * - ``drs.metric.use.ratio``
+ - `true`
+ - Whether to use ratio of selected metric & total. Useful when the cluster has hosts with different capacities.
+ * - ``drs.imbalance.condensed.skip.threshold``
+ - `0.95`
+ - Threshold to ignore the metric for a host while calculating the imbalance to decide whether DRS is required for
+ a cluster.This is to avoid cases when the calculated imbalance gets skewed due to a single host having a very
+ high/low metric value resulting in imbalance being higher than 1. If ``drs.metric.type`` is ``free``, set a lower
Review Comment:
```suggestion
high/low metric value resulting in imbalance being higher than 1. If ``drs.metric.type`` is ``free``, set a lower
```
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Re: [PR] Document advance DRS settings [cloudstack-documentation]
Posted by "sureshanaparti (via GitHub)" <gi...@apache.org>.
sureshanaparti commented on code in PR #374:
URL: https://github.com/apache/cloudstack-documentation/pull/374#discussion_r1466265505
##########
source/adminguide/clusters.rst:
##########
@@ -74,6 +74,30 @@ Following are the configuration parameters for DRS.
Very high value for ``drs.max.migrations`` can result in management server using up all of it's workers for DRS tasks
and not being able to execute other tasks.
+There are some advanced parameters that can be configured for DRS. These paramters impact the way imbalance is calculated
+for a cluster. Do not change these parameters unless you know what you are doing.
+
+.. list-table:: Advanced DRS related cluster parameters
+ :header-rows: 1
+
+ * - Parameter
+ - Default
+ - Description
+ * - ``drs.metric.type``
+ - `used`
+ - The metric type used to measure imbalance in a cluster. This can completely change the imbalance value.
+ Possible values are free, used.
+ * - ``drs.metric.use.ratio``
+ - `true`
+ - Whether to use ratio of selected metric & total. Useful when the cluster has hosts with different capacities.
+ * - ``drs.imbalance.condensed.skip.threshold``
+ - `0.95`
+ - Threshold to ignore the metric for a host while calculating the imbalance to decide whether DRS is required for
+ a cluster.This is to avoid cases when the calculated imbalance gets skewed due to a single host having a very
Review Comment:
```suggestion
a cluster. This is to avoid cases when the calculated imbalance gets skewed due to a single host having a very
```
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Re: [PR] Document advance DRS settings [cloudstack-documentation]
Posted by "sureshanaparti (via GitHub)" <gi...@apache.org>.
sureshanaparti commented on code in PR #374:
URL: https://github.com/apache/cloudstack-documentation/pull/374#discussion_r1466263602
##########
source/adminguide/clusters.rst:
##########
@@ -74,6 +74,30 @@ Following are the configuration parameters for DRS.
Very high value for ``drs.max.migrations`` can result in management server using up all of it's workers for DRS tasks
and not being able to execute other tasks.
+There are some advanced parameters that can be configured for DRS. These paramters impact the way imbalance is calculated
Review Comment:
```suggestion
There are some advanced parameters that can be configured for DRS. These parameters impact the way imbalance is calculated
```
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Re: [PR] Document advance DRS settings [cloudstack-documentation]
Posted by "vishesh92 (via GitHub)" <gi...@apache.org>.
vishesh92 closed pull request #374: Document advance DRS settings
URL: https://github.com/apache/cloudstack-documentation/pull/374
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Re: [PR] Document advance DRS settings [cloudstack-documentation]
Posted by "DaanHoogland (via GitHub)" <gi...@apache.org>.
DaanHoogland commented on PR #374:
URL: https://github.com/apache/cloudstack-documentation/pull/374#issuecomment-1910017237
@vishesh92 is this for 4.19? or next release?
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Re: [PR] Document advance DRS settings [cloudstack-documentation]
Posted by "vishesh92 (via GitHub)" <gi...@apache.org>.
vishesh92 commented on PR #374:
URL: https://github.com/apache/cloudstack-documentation/pull/374#issuecomment-1910028475
> @vishesh92 is this for 4.19? or next release?
I was thinking of getting this in 4.19.1.
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