加上 nginx 反向代理后, apache 出现了诡异的味道 - V2EX
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iceiceberg

加上 nginx 反向代理后, apache 出现了诡异的味道

  •  
  •   iceiceberg Sep 9, 2015 3509 views
    This topic created in 3886 days ago, the information mentioned may be changed or developed.

    之前一直用 apache ,因为要搭集群,今天就在前端加了 nginx 做反向代理。
    加完以后发现:
    a ) apache 的进程减少了,大概从 100 个减到了 20 个。(很开心)
    b )但是每个 apache 进程的时间变长( 1 个小时),占内存变多( RES 400 多 m )。导致系统内存占用接近 100%

    我是新手,想请问:
    1 )这是正常的情况么?
    2 )如果正常的话,原理是什么?是 apache 对请求也有 pool 的机制么?
    3 )系统内存占用接近 100%的话,是个问题吧?

    多谢!

    7 replies    2015-09-09 23:52:18 +08:00
    cevincheung
        1
    cevincheung  
       Sep 9, 2015   1
    linux 内存占用“高”很正常。看看真实实际占用内存多少吧。

    用 htop
    akira
        2
    akira  
       Sep 9, 2015   1
    1 正常
    2 正常
    3 正常
    iceiceberg
        3
    iceiceberg  
    OP
       Sep 9, 2015
    @akira 感谢大侠!
    iceiceberg
        4
    iceiceberg  
    OP
       Sep 9, 2015
    @cevincheung 没看 VIRT 。看 RES 也不准?
    ericFork
        5
    ericFork  
       Sep 9, 2015
    我还以为是 Apache 尸变了……
    iceiceberg
        6
    iceiceberg  
    OP
       Sep 9, 2015
    @ericFork haha
    ryd994
        7
    ryd994  
       Sep 9, 2015 via Android
    是因为 Nginx 的长连接还有缓冲吧
    顺便挡了一些 slowloris ……
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