实例的OOM有时很频繁，同时OOM很难提前监控 我们的办法 利用外部脚本监控cgroup中的内存统计 发生内存水位较高时，将实例移入公共 cgroup；同时发出cancel query信号给内核 水位下降时移回实例的cgroup 2016Postgres中国用户大会 Linux Box CGroup backend backend backend CGroup backend backend backend backend 2016Postgres中国用户大会 Linux Box CGroup backend backend backend CGroup backend backend backend CGroup Public CGroup Kill –USR2 2016Postgres中国用户大会 未来规划 满足客户需求！ 列存优化 – 某些场景下提高数倍性能 CPU优化

发 执行的查询数量，内存的消耗量，以及CPU的使用量。GP提供了两种资源管理的方案， 资源组和资源队列。 注意：在RedHat6或者CentOS6中使用资源组是有问题的，这是因为早期的 cgroup有缺陷，最好将Kernel升级到2.6.32-696或者更高的版本以修复已知问题， 从而可以更好的使用资源组功能。这些问题在Redhat7或者CentOS7中已经修复。 资源队列或者资源 +86 18616691889) 编写：陈淼 - 48 - 跃事务的数量，当然，也可以用于压制 CPU 和内存资源的使用量。 基于角色的资源组通过 Linux Kernel 的 cgroup 来管理 CPU 资源，GP 数据库 使用名为 vmtracker 的内存管理模式为基于角色的资源组进行内存的管理。 当执行一个事务时，数据库会根据 ROLE 所属的资源组的资源配额进行评估，当所 队。 使用基于外部组件的资源组来管理外部组件的 CPU 和内存资源。这种资源组，使 用 cgroup 来管理外部组件的 CPU 和内存的使用总量。 注意：GP 的容器化部署，例如 Greenplum for Kubernetes(GP4K)，可能会创建 一组嵌套的 cgroup 配置来管理系统资源，这可能会影响 GP 的资源组管理 CPU 的使 用率、Core 数量和内存使用量

group-based workload management on RedHat 6.x and CentOS 6.x 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/8.x systems. Note For (8) Process: 8636 ExecStart=/etc/rc.d/init.d/vmware-tools start (code=exited, statu s=0/SUCCESS) CGroup: /system.slice/vmware-tools.service ├─8739 /usr/sbin/vmtoolsd └─8775 /usr/lib/vm security and resource management, Greenplum Database makes use of the Linux cgroups. 1. Install the cgroup configuration package: $ yum install -y libcgroup-tools 2. Verify that the directory /etc/cgconfig

Limits 980 Configuring and Using Resource Groups 980 Prerequisites 981 Configuring cgroup v1 981 Configuring cgroup v2 983 Enabling Resource Groups 984 Creating Resource Groups 985 Configuring Automatic on the cgroup v1 version of Linux cgroup functionality. group-v2 - Configures Greenplum Database to use resource groups and base resource group behavior on the cgroup v2 version of Linux cgroup functionality I/O. There are two versions of cgroups: cgroup v1 and cgroup v2. Greenplum Database 7 supports both versions, but it only supports the parameter IO_LIMIT for cgroup v2. The version of Linux Control Groups

group-based workload management on RedHat 6.x and CentOS 6.x 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/8.x systems. If you use (8) Process: 8636 ExecStart=/etc/rc.d/init.d/vmware-tools start (code=exited, statu s=0/SUCCESS) CGroup: /system.slice/vmware-tools.service ├─8739 /usr/sbin/vmtoolsd └─8775 /usr/lib/vm security and resource management, Greenplum Database makes use of the Linux cgroups. 1. Install the cgroup configuration package: $ yum install -y libcgroup-tools 2. Verify that the directory /etc/cgconfig

group-based workload management on RedHat 6.x and CentOS 6.x 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/8.x systems. If you use Process: 8636 ExecStart=/etc/rc.d/init.d/vmware-tools start (code=exited, statu s=0/SUCCESS) CGroup: /system.slice/vmware-tools.service ├─8739 /usr/sbin/vmtoolsd └─8775 /usr/lib/ security and resource management, Greenplum Database makes use of the Linux cgroups. 1. Install the cgroup configuration package: $ yum install -y libcgroup-tools 2. Verify that the directory /etc/cgconfig

8) libcurl libevent (RHEL/CentOS 7 and RHEL/Rocky 8) 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/8.x systems. Caution resource group to manage the resources of a PL/Container runtime, you must specify MEMORY_AUDITOR=cgroup and CONCURRENCY=0 in addition to the required CPU and memory limits. For example, the following plpy_run1_rg for a PL/Container runtime: CREATE RESOURCE GROUP plpy_run1_rg WITH (MEMORY_AUDITOR=cgroup, CONCURRENCY=0, CPU_RATE_LIMIT=10, MEMORY_LIMIT=10);

group-based workload management on RedHat 6.x and CentOS 6.x 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/8.x systems. If you use (8) Process: 8636 ExecStart=/etc/rc.d/init.d/vmware-tools start (code=exited, statu s=0/SUCCESS) CGroup: /system.slice/vmware-tools.service ├─8739 /usr/sbin/vmtoolsd VMware Tanzu Greenplum 6 Documentation security and resource management, Greenplum Database makes use of the Linux cgroups. 1. Install the cgroup configuration package: VMware Tanzu Greenplum 6 Documentation VMware, Inc 310 $ yum install -y

group-based workload management on RedHat 6.x and CentOS 6.x 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/8.x systems. Caution resource group to manage the resources of a PL/Container runtime, you must specify MEMORY_AUDITOR=cgroup and CONCURRENCY=0 in addition to the required CPU and memory limits. For example, the following plpy_run1_rg for a PL/Container runtime: CREATE RESOURCE GROUP plpy_run1_rg WITH (MEMORY_AUDITOR=cgroup, CONCURRENCY=0, CPU_RATE_LIMIT=10, MEMORY_LIMIT=10);

group-based workload management on RedHat 6.x and CentOS 6.x 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 resource group-based workload management on RedHat 6.x and CentOS 6.x. 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 group. For example, Greenplum Database is running in a cgroup demo, and the Greenplum Database cgroup is nested in the cgroup demo. If the cgroup demo is configured with a CPU limit of 60% of system CPU