系统性能瓶颈排查点

1、服务器最大连接数

[root@ecs-493b-0007 config]# ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 61550
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 65535
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 61550
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

2、web网络服务器最大连接数配置

ps:tomcat

<Connector port="8080" protocol="org.apache.coyote.http11.Http11Protocol" SSLEnabled="true"
maxThreads="150" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS"
keystoreFile="/home/Demo/apache-tomcat-8.5.47/tomcat.keystore"
keystorePass="111111" />

<Connector port="8090" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />

3、应用服务数据库连接数

spring:
  messages:
    basename: enum,exception,component-errors,web-common-errors,dcm-errors
  datasource:
    druid:
      connection-properties: config.decrypt=false;config.decrypt.key=${publicKey}
      filter:
        config:
          enabled: true
      initial-size: 1
      max-active: 10000
      min-idle: 1
      max-wait: 10000
      pool-prepared-statements: false
      max-open-prepared-statements: 0
      validation-query: SELECT 'X'
      test-on-borrow: false
      test-on-return: false
      test-while-idle: true
      time-between-eviction-runs-millis: 600000
      min-evictable-idle-time-millis: 300000