From 3d1f24b6f828a0c7d1ad1621eef463d6e0414d7a Mon Sep 17 00:00:00 2001 From: dyozie Date: Wed, 6 Dec 2017 09:38:44 -0800 Subject: [PATCH] docs - update resource groups kernel bug note for SuSE 12 --- gpdb-doc/dita/admin_guide/wlmgmt.xml | 13 +++++++------ .../dita/admin_guide/workload_mgmt_resgroups.xml | 14 +++++++------- 2 files changed, 14 insertions(+), 13 deletions(-) diff --git a/gpdb-doc/dita/admin_guide/wlmgmt.xml b/gpdb-doc/dita/admin_guide/wlmgmt.xml index 9140a045b8..076b5f612c 100644 --- a/gpdb-doc/dita/admin_guide/wlmgmt.xml +++ b/gpdb-doc/dita/admin_guide/wlmgmt.xml @@ -14,12 +14,13 @@ Significant Greenplum Database performance degradation has been observed when enabling resource group-based workload management on RedHat 6.x, CentOS 6.x, and SuSE 11 systems. This issue is caused by a Linux cgroup kernel bug. This kernel bug has been fixed in - CentOS 7.x and Red Hat 7.x systems.

If you use RedHat 6 and the performance with resource - groups is acceptable for your use case, upgrade your kernel to version 2.6.32-696 or higher - to benefit from other fixes to the cgroups implementation.

SuSE 11 does not have a - kernel version that resolves this issue; resource groups are still considered to be an - experimental feature on this platform. Resource groups are not - supported on SuSE 11 for production use.

 + CentOS 7.x and Red Hat 7.x systems, and on SuSE 12 SP2/SP3 systems with kernel version + 4.4.73-5.1 or newer.

If you use RedHat 6 and the performance with resource groups is + acceptable for your use case, upgrade your kernel to version 2.6.32-696 or higher to benefit + from other fixes to the cgroups implementation.

SuSE 11 does not have a kernel + version that resolves this issue; resource groups are still considered to be an experimental + feature on this platform. Resource groups are not supported on SuSE + 11 for production use.

Either the resource queue or the resource group management scheme can be active in Greenplum Database; both schemes cannot be active at the same time.

Resource queues are enabled by default when you install your Greenplum Database cluster. diff --git a/gpdb-doc/dita/admin_guide/workload_mgmt_resgroups.xml b/gpdb-doc/dita/admin_guide/workload_mgmt_resgroups.xml index d8da389c30..01fe3df937 100644 --- a/gpdb-doc/dita/admin_guide/workload_mgmt_resgroups.xml +++ b/gpdb-doc/dita/admin_guide/workload_mgmt_resgroups.xml @@ -237,13 +237,13 @@ Significant Greenplum Database performance degradation has been observed when enabling resource group-based workload management on RedHat 6.x, CentOS 6.x, and SuSE 11 systems. This issue is caused by a Linux cgroup kernel bug. This kernel bug has - been fixed in CentOS 7.x and Red Hat 7.x systems.

If you use RedHat 6 and the performance - with resource groups is acceptable for your use case, upgrade your kernel to version - 2.6.32-696 or higher to benefit from other fixes to the cgroups implementation. -

SuSE 11 does not have a kernel version that resolves this issue; resource groups - are still considered to be an experimental feature on this platform. Resource groups are not supported on SuSE 11 for production - use.

+ been fixed in CentOS 7.x and Red Hat 7.x systems, and on SuSE 12 SP2/SP3 systems with kernel + version 4.4.73-5.1 or newer.

If you use RedHat 6 and the performance with resource groups + is acceptable for your use case, upgrade your kernel to version 2.6.32-696 or higher to + benefit from other fixes to the cgroups implementation.

SuSE 11 does not have a + kernel version that resolves this issue; resource groups are still considered to be an + experimental feature on this platform. Resource groups are not + supported on SuSE 11 for production use.

Prerequisite

Greenplum Database resource groups use Linux Control Groups (cgroups) to manage CPU -- GitLab