Hello, I am running squid as http caching server, after running for few days our squid server will stop responding to client requests. When this occurs, I see below errors in cache.log. 2014/05/02 12:02:57| assertion failed: store_swapout.cc:315: "mem->swapout.sio == self" 2014/05/02 12:03:01| Starting Squid Cache version 3.1.10 for x86_64-redhat-linux-gnu... 2014/05/02 12:03:01| Process ID 23162 2014/05/02 12:03:01| With 65536 file descriptors available 2014/05/02 12:03:01| Initializing IP Cache... 2014/05/02 12:03:01| DNS Socket created at 0.0.0.0, FD 7 2014/05/02 12:03:01| Adding domain compute-1.internal from /etc/resolv.conf 2014/05/02 12:03:01| Adding nameserver 172.16.0.23 from /etc/resolv.conf 2014/05/02 12:03:01| User-Agent logging is disabled. 2014/05/02 12:03:01| Referer logging is disabled. 2014/05/02 12:03:01| Unlinkd pipe opened on FD 12 2014/05/02 12:03:01| Local cache digest enabled; rebuild/rewrite every 3600/3600 sec 2014/05/02 12:03:01| Swap maxSize 340787200 + 262144 KB, estimated 26234564 objects 2014/05/02 12:03:01| Target number of buckets: 1311728 2014/05/02 12:03:01| Using 2097152 Store buckets Squid is running on CentOS 6.2 , below is the package details, I deployed using yum. ########### Name : squid Arch : x86_64 Epoch : 7 Version : 3.1.10 Release : 20.el6_5 Size : 5.8 M Repo : installed >From repo : updates Summary : The Squid proxy caching server URL : http://www.squid-cache.org License : GPLv2 and (LGPLv2+ and Public Domain) Description : Squid is a high-performance proxy caching server for Web clients, : supporting FTP, gopher, and HTTP data objects. Unlike traditional : caching software, Squid handles all requests in a single, : non-blocking, I/O-driven process. Squid keeps meta data and especially : hot objects cached in RAM, caches DNS lookups, supports non-blocking : DNS lookups, and implements negative caching of failed requests. : : Squid consists of a main server program squid, a Domain Name System : lookup program (dnsserver), a program for retrieving FTP data : (ftpget), and some management and client tools. ########################### Please find the below squid configuration I have. squid.conf ################################################################### # # Recommended minimum configuration: # acl manager proto cache_object acl localhost src 127.0.0.1/32 ::1 acl localhost src 206.80.1.253/32 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 # Example rule allowing access from your local networks. # Adapt to list your (internal) IP networks from where browsing # should be allowed acl localnet src 10.0.0.0/8 # RFC1918 possible internal network acl localnet src 172.16.0.0/12 # RFC1918 possible internal network acl localnet src 192.168.0.0/16 # RFC1918 possible internal network acl localnet src fc00::/7 # RFC 4193 local private network range acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines acl SSL_ports port 443 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 # # Recommended minimum Access Permission configuration: # # Only allow cachemgr access from localhost http_access allow manager localhost http_access deny manager # Deny requests to certain unsafe ports http_access deny !Safe_ports # Deny CONNECT to other than secure SSL ports http_access deny CONNECT !SSL_ports # We strongly recommend the following be uncommented to protect innocent # web applications running on the proxy server who think the only # one who can access services on "localhost" is a local user #http_access deny to_localhost cache_mgr root@localhost #################Logging configurations####################### cache_log /mnt/log/squid/cache.log access_log /mnt/log/squid/access.log squid cache_store_log /mnt/log/squid/store.log squid # # INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS # # Example rule allowing access from your local networks. # Adapt localnet in the ACL section to list your (internal) IP networks # from where browsing should be allowed http_access allow localnet http_access allow localhost # And finally deny all other access to this proxy http_access deny all # Squid normally listens to port 3128 http_port 3128 # We recommend you to use at least the following line. hierarchy_stoplist cgi-bin ? #Maximum object size maximum_object_size 32 MB # Uncomment and adjust the following to add a disk cache directory. cache_dir ufs /data/squid/dirs/1 5120 4 1024 cache_dir ufs /data/squid/dirs/2 5120 4 1024 cache_dir ufs /data/squid/dirs/3 5120 4 1024 cache_dir ufs /data/squid/dirs/4 5120 4 1024 cache_dir ufs /data/squid/dirs/5 5120 4 1024 cache_dir ufs /data/squid/dirs/6 5120 4 1024 cache_dir ufs /data/squid/dirs/7 5120 4 1024 cache_dir ufs /data/squid/dirs/8 5120 4 1024 cache_dir ufs /data/squid/dirs/9 5120 4 1024 cache_dir ufs /data/squid/dirs/10 5120 4 1024 cache_dir ufs /data/squid/dirs/11 5120 4 1024 cache_dir ufs /data/squid/dirs/12 5120 4 1024 cache_dir ufs /data/squid/dirs/13 5120 4 1024 cache_dir ufs /data/squid/dirs/14 5120 4 1024 cache_dir ufs /data/squid/dirs/15 5120 4 1024 cache_dir ufs /data/squid/dirs/16 5120 4 1024 cache_dir ufs /data/squid/dirs/17 5120 4 1024 cache_dir ufs /data/squid/dirs/18 5120 4 1024 cache_dir ufs /data/squid/dirs/19 5120 4 1024 cache_dir ufs /data/squid/dirs/20 5120 4 1024 cache_dir ufs /data/squid/dirs/21 5120 4 1024 cache_dir ufs /data/squid/dirs/22 5120 4 1024 cache_dir ufs /data/squid/dirs/23 5120 4 1024 cache_dir ufs /data/squid/dirs/24 5120 4 1024 cache_dir ufs /data/squid/dirs/25 5120 4 1024 cache_dir ufs /data/squid/dirs/26 5120 4 1024 cache_dir ufs /data/squid/dirs/27 5120 4 1024 cache_dir ufs /data/squid/dirs/28 5120 4 1024 cache_dir ufs /data/squid/dirs/29 5120 4 1024 cache_dir ufs /data/squid/dirs/30 5120 4 1024 cache_dir ufs /data/squid/dirs/31 5120 4 1024 cache_dir ufs /data/squid/dirs/32 5120 4 1024 cache_dir ufs /data/squid/dirs/33 5120 4 1024 cache_dir ufs /data/squid/dirs/34 5120 4 1024 cache_dir ufs /data/squid/dirs/35 5120 4 1024 cache_dir ufs /data/squid/dirs/36 5120 4 1024 cache_dir ufs /data/squid/dirs/37 5120 4 1024 cache_dir ufs /data/squid/dirs/38 5120 4 1024 cache_dir ufs /data/squid/dirs/39 5120 4 1024 cache_dir ufs /data/squid/dirs/40 5120 4 1024 cache_dir ufs /data/squid/dirs/41 5120 4 1024 cache_dir ufs /data/squid/dirs/42 5120 4 1024 cache_dir ufs /data/squid/dirs/43 5120 4 1024 cache_dir ufs /data/squid/dirs/44 5120 4 1024 cache_dir ufs /data/squid/dirs/45 5120 4 1024 cache_dir ufs /data/squid/dirs/46 5120 4 1024 cache_dir ufs /data/squid/dirs/47 5120 4 1024 cache_dir ufs /data/squid/dirs/48 5120 4 1024 cache_dir ufs /data/squid/dirs/49 5120 4 1024 cache_dir ufs /data/squid/dirs/50 5120 4 1024 cache_dir ufs /data/squid/dirs/51 5120 4 1024 cache_dir ufs /data/squid/dirs/52 5120 4 1024 cache_dir ufs /data/squid/dirs/53 5120 4 1024 cache_dir ufs /data/squid/dirs/54 5120 4 1024 cache_dir ufs /data/squid/dirs/55 5120 4 1024 cache_dir ufs /data/squid/dirs/56 5120 4 1024 cache_dir ufs /data/squid/dirs/57 5120 4 1024 cache_dir ufs /data/squid/dirs/58 5120 4 1024 cache_dir ufs /data/squid/dirs/59 5120 4 1024 cache_dir ufs /data/squid/dirs/60 5120 4 1024 cache_dir ufs /data/squid/dirs/61 5120 4 1024 cache_dir ufs /data/squid/dirs/62 5120 4 1024 cache_dir ufs /data/squid/dirs/63 5120 4 1024 cache_dir ufs /data/squid/dirs/64 5120 4 1024 # Leave coredumps in the first cache dir coredump_dir /data/squid/coredump # Add any of your own refresh_pattern entries above these. refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/) 0 0% 0 refresh_pattern . 129600 100% 518400 ############################################################################################## Tried searching mailing list for any help with this error, unfortunately couldn't find anything useful. Can someone please help me with this error. Thanks in advance. Viral
