server_cpu_quota_max

OceanBase
#1

server_cpu_quota_max 用于设置系统可以使用的最大 CPU 配额。

问题：
指的是整个OB集群的最大 CPU 配额？ 还是单个observer进程的最大 CPU 配额？

#3 
SHOW parameters LIKE '%server_cpu%';
zone svr_type svr_ip svr_port name data_type value info section scope source edit_level
zone2 observer 10.0.0.70 2882 server_cpu_quota_max 2 the number of maximal vCPUs allocated to the server tenant(a special internal tenant that exists on every observer). Range: [1, 16] TENANT CLUSTER DEFAULT STATIC_EFFECTIVE
zone2 observer 10.0.0.70 2882 server_cpu_quota_min 2 the number of minimal vCPUs allocated to the server tenant(a special internal tenant that exists on every observer). Range: [1, 16] TENANT CLUSTER DEFAULT STATIC_EFFECTIVE
zone1 observer 10.0.0.66 2882 server_cpu_quota_max 1 the number of maximal vCPUs allocated to the server tenant(a special internal tenant that exists on every observer). Range: [1, 16] TENANT CLUSTER DEFAULT STATIC_EFFECTIVE
zone1 observer 10.0.0.66 2882 server_cpu_quota_min 1 the number of minimal vCPUs allocated to the server tenant(a special internal tenant that exists on every observer). Range: [1, 16] TENANT CLUSTER DEFAULT STATIC_EFFECTIVE

看描述这两个参数是控制以前版本常说的内部租户（500序列租户）的CPU 虚拟CPU个数，与机器物理 CPU 无直接关系，仅影响多租户线程池的初始大小和最大大小。3.2版本默认值分别是 [2, 5] . 4.2版本默认都变成 [1,1].

推测 4.x 由于有了 meta租户，以前常说的 500 租户的这个参数可能就没用了。

the number of minimal vCPUs allocated to the server tenant(a special internal tenant that exists on every observer). Range: [1, 16]
the number of maximal vCPUs allocated to the server tenant(a special internal tenant that exists on every observer). Range: [1, 16]

这个参数不能用 SQL 修改，只能在进程启动的时候指定。

[admin@server070 oceanbase]$ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/admin/oceanbase/lib
[admin@server070 oceanbase]$ bin/observer -o "server_cpu_quota_max=2,server_cpu_quota_min=2"
bin/observer -o server_cpu_quota_max=2,server_cpu_quota_min=2
optstr: server_cpu_quota_max=2,server_cpu_quota_min=2
[admin@server070 oceanbase]$ ps -ef|grep observer
admin     1268 32334  0 22:29 pts/2    00:00:00 grep --color=auto observer
admin    32722     1 99 22:29 ?        00:00:23 bin/observer -o server_cpu_quota_max=2,server_cpu_quota_min=2
#4

配置sys租户的默认cpu规格