鱿鱼需要2分钟来caching一个小pdf

我们有一个问题，从某个特定的url的某些PDF需要很长时间来显示。 鱿鱼似乎用了很长时间来caching（超过2分钟）为110kb。 如果我没有通过鱿鱼浏览这个pdf，它完美的作品。

1359106030.833 120114 160.85.85.46 TCP_MISS/200 116194 GET http://www2.zhlex.zh.ch/appl/zhlex_r.nsf/0/9429732E0BEDB5EDC12574C60044A4CC/$file/xxx.pdf - DIRECT/195.65.218.66 application/pdf 

你也可以看到tcpdump的差距

它存在于我们的Squid 3.1中，但也在Squid 3.2上。 它只发生在该url的PDF文件。 其他pdf工作正常。

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它不能成为他们的服务器，因为它无需通过代理就可以顺利运行

这是我们的卫生configuration。 它从旧的鱿鱼版本被接pipe，并且从那以后没有被调整。

 acl manager proto cache_object acl localhost src 127.0.0.1/32 acl bigip src xx.xx.xx.xx/32 acl to_localhost dst 127.0.0.0/8 acl monhost src xx.xx.xx.xx/32 acl srv-ts-057 src xx.xx.xx.xx/32 acl srv-ts-058 src xx.xx.xx.xx/32 acl snmppublic snmp_community Fast3thernet acl xxnet src xx.xx.xx.xx/16 # xx acl xxnet src xx.xx.xx.xx/32 # HSWNAT acl xxnet src xx.xx.xx.xx/16 # VoIP acl xxnet src xx.xx.xx.xx/22 # HAP acl xxnet src xx.xx.xx.xx/22 # HSSAZ acl xxnet src xx.xx.xx.xx/24 # Management Netz 1 acl xxnet src xx.xx.xx.xx/24 # Management Netz 2 acl xxnet src xx.xx.xx.xx/24 # FET-DEV acl xxnet src xx.xx.xx.xx/24 # FET-TEST acl xxnet src xx.xx.xx.xx/24 # BET-DEV acl xxnet src xx.xx.xx.xx/24 # BET-TEST acl xxnet src xx.xx.xx.xx/24 # FET-VDP acl xxnet src xx.xx.xx.xx/24 # FET-VDP acl STAFFMGR src xx.xx.xx.xx/26 acl SSL_ports port 443 8443 28443 50001 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT acl MONxxCH dstdomain mon.xx.ch acl ZREG dstdomain zreg.xx.ch acl PUT method PUT http_access allow PUT xxnet http_access deny PUT acl PURGE method PURGE http_access allow PURGE localhost http_access deny PURGE acl PROPFIND method PROPFIND http_access allow PROPFIND srv-ts-057 http_access allow PROPFIND srv-ts-058 http_access deny PROPFIND http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access deny to_localhost http_access deny !STAFFMGR MONxxCH http_access deny !STAFFMGR ZREG http_access allow xxnet http_access deny all icp_access deny all follow_x_forwarded_for allow localhost follow_x_forwarded_for allow bigip acl_uses_indirect_client on delay_pool_uses_indirect_client on log_uses_indirect_client on http_port 160.85.104.11:8080 hierarchy_stoplist cgi-bin ? cache_mem 768 MB maximum_object_size_in_memory 32 KB cache_dir ufs /var/cache/squid 25000 64 256 coredump_dir /var/cache/squid #access_log /var/log/squid/access.log #cache_log /var/log/squid/cache.log cache_store_log none #pid_filename /var/run/squid.pid ftp_user [email protected] refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern . 0 20% 4320 acl shoutcast rep_header X-HTTP09-First-Line ^ICY.[0-9] acl apache rep_header Server ^Apache request_timeout 30 seconds cache_mgr [email protected] #mail_from [email protected] #mail_program /usr/local/bin/mutt cache_effective_user squid cache_effective_group squid httpd_suppress_version_string on visible_hostname srv-app-901.xx.ch unique_hostname srv-app-901.xx.ch snmp_port 3401 snmp_access allow snmppublic monhost snmp_access deny all snmp_incoming_address xx.xx.xx.xx snmp_outgoing_address 255.255.255.255 icp_port 0 allow_underscore off dns_retransmit_interval 3 seconds dns_timeout 1 minute dns_nameservers xx.xx.xx.xx append_domain .xx.ch max_filedescriptors 8192 

任何想法可能会导致这一点？

 acl to_ipv6 dst ipv6 tcp_outgoing_address <your_proxy_ipv4_address> !to_ipv6