请教下LNMP RESTART老是出错

undi

请教下LNMP RESTART老是出错（start apache... httpd (pid xxx) already running看下面图片。
感觉网站速度变慢了，就重启下，然后就一直报错，要重启好多次才可以,

licess

already running 说明apache已经启动

undi

主要是网站也打不开，如果出现那个ALREADY RUNNING的话
[Mon Sep 11 22:18:58.210034 2017] [mpm_prefork:notice] [pid 28362] AH00169: caught SIGTERM, shutting down
[Mon Sep 11 22:19:00.344505 2017] [ssl:warn] [pid 29557] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
[Mon Sep 11 22:19:00.347286 2017] [lbmethod_heartbeat:notice] [pid 29557] AH02282: No slotmem from mod_heartmonitor
[Mon Sep 11 22:19:00.358758 2017] [mpm_prefork:notice] [pid 29557] AH00163: Apache/2.4.20 (Unix) OpenSSL/1.0.1e-fips PHP/5.6.22 configured -- resuming normal operations
[Mon Sep 11 22:19:00.358804 2017] [core:notice] [pid 29557] AH00094: Command line: '/usr/local/apache/bin/httpd'
*** glibc detected *** /usr/local/apache/bin/httpd: free(): invalid pointer: 0x0000000001eb0c60 ***
*** glibc detected *** /usr/local/apache/bin/httpd: free(): invalid pointer: 0x0000000001eb0c60 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x75f3e)[0x7fc224fb2f3e]
/lib64/libc.so.6(+0x78d8d)[0x7fc224fb5d8d]