netstat-an|awk'/tcp/{print$6}'|sort|uniq-c173ESTABLISHED43FIN_WAIT120FIN_WAIT25LAST_ACK7LISTEN2SYN_RECV3SYN_SENT1745TIME_WAIT網站運行一會兒就有大量TIME_WAIT,通過netstat可以看到是php調用curl導致的目前CURLOPT_CONNECTTIMEOUT設置為:3CURLOPT_TIMEOUT設置為：3網上說修改/etc/sysctl.conf，net.ipv4.tcp_syncookies=1net.ipv4.tcp_tw_reuse=1net.ipv4.tcp_tw_recycle=1net.ipv4.tcp_fin_timeout=30我修改報錯error:permissiondeniedonkey'net.ipv4.tcp_tw_reuse'error:permissiondeniedonkey'net.ipv4.tcp_tw_recycle'error:permissiondeniedonkey'net.ipv4.tcp_fin_timeout'服務器是centos