hi , i have made a test for squid withing 30 minutes and ive logged alot of things during working : 1st of all , the current server is 8 g ram and quad core cpu " 8 cores " here is squid performance and degredation with time : <http://squid-web-proxy-cache.1019090.n4.nabble.com/file/n4663169/237842408.png> as we see from graph , squid is fine as 1st starting and after some time degradation start untill it reach down !!!! also from grahp we note the cpu loading , not congested to specific cores , i see its fine . note to hint that during the squid running the cpus cores was fine and normal except free ram is getting decreasing ! @Alex , during to ur question , the cpu dissipation was jumping to cores during top and pressing 1 then c i monitored it and cpu dissipation is normal ! also , @Alex, ive disabled "named" service of my server and let squid look to 8.8.8.8 for dns resolving , i mean i dont want it to be makking problems . @Alex , about the "vary object loop" which i posted before , i found that when i define cache dir , i dont see this issue in logs , thats why in my squid.conf below i configured only 1 G for rock type and 1 drive. @Alex , ive reduced cache mem , and cache dir , and put mem pools off ,so that we dont face problems in memoery ,but not sure if what i did is fine or not. here is squid.conf file : ################################################################# # 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 mysubnet src zzzzzzzzzzzzzz/zzzzzzzzzzzzzzz 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: # Deny requests to certain unsafe ports http_access deny !Safe_ports http_access allow localnet # Deny CONNECT to other than secure SSL ports http_access deny CONNECT !SSL_ports ####################################################### ###########SMP oPTIONS##################### dns_v4_first on # 3 workers, using worker #1 as the frontend is important workers 3 ######################################### visible_hostname squid.drx #################################################### ####Filterring############## acl blockkeywords dstdomain "/etc/squid/koko.acl" http_access deny blockkeywords ################################################# cache_log /var/log/squid/cache.log access_log stdio:/var/log/squid/access.log ############################################### http_port xxxx:zzzzzz http_port cccccccc:333333333333 tproxy ############################################################### http_access allow mysubnet ############################################################################################ cache_mgr xxxxxxx cachemgr_passwd xxxxxxxxxxxx all # add user authentication and similar options here http_access allow manager localhost http_access allow manager mysubnet http_access allow mysubnet manager http_access deny manager ####################################################################### cache_mem 512 MB ################################################ maximum_object_size_in_memory 64 KB maximum_object_size 10 MB ####################################################################### cache_swap_low 90 cache_swap_high 95 ########################################################### server_persistent_connections off client_persistent_connections off quick_abort_min 0 KB quick_abort_max 0 KB quick_abort_pct 95 fqdncache_size 65535 ipcache_size 65535 ipcache_low 98 ipcache_high 99 ##################################################### ########### WCCP2 Config############# wccp2_router x.x.x.x.x. wccp2_rebuild_wait off wccp_version 2 wccp2_forwarding_method 2 wccp2_return_method 2 wccp2_assignment_method 2 wccp2_service dynamic 92 wccp2_service_info 92 protocol=tcp flags=src_ip_hash priority=250 ports=80 wccp2_service dynamic 93 wccp2_service_info 93 protocol=tcp flags=dst_ip_hash,ports_source priority=250 ports=80 ###################################################### cache_effective_user squid cache_effective_group squid ####################################################### memory_replacement_policy heap GDSF cache_replacement_policy heap LFUDA ##################################################### dns_nameservers 8.8.8.8 ####################################################### http_access deny all ############################## 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 #################################################### cache_dir rock /CACHE1 1000 max-size=32768 swap-timeout=350 max-swap-rate=350 ##################################### memory_pools off ================================================================= i have monitored squid along time : here is monitoring logs : *at 10:25* *no users pumped to squid* top command and cache manage results : top - 14:27:50 up 1 day, 5:43, 3 users, load average: 0.02, 0.04, 0.08 Tasks: 152 total, 1 running, 151 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 8182336k total, 7006844k used, 1175492k free, 173512k buffers Swap: 0k total, 0k used, 0k free, 6527720k cached ============================================================================ Squid Object Cache: Version 3.3.9 Start Time: Thu, 07 Nov 2013 18:22:47 GMT Current Time: Thu, 07 Nov 2013 18:29:14 GMT Connection information for squid: Number of clients accessing cache: 8 Number of HTTP requests received: 209 Number of ICP messages received: 0 Number of ICP messages sent: 0 Number of queued ICP replies: 0 Number of HTCP messages received: 0 Number of HTCP messages sent: 0 Request failure ratio: 0.00 Average HTTP requests per minute since start: 32.4 Average ICP messages per minute since start: 0.0 Select loop called: 685029 times, 2.755 ms avg Cache information for squid: Hits as % of all requests: 5min: 0.0%, 60min: 0.0% Hits as % of bytes sent: 5min: 2.2%, 60min: 2.2% Memory hits as % of hit requests: 5min: 0.0%, 60min: 0.0% Disk hits as % of hit requests: 5min: 0.0%, 60min: 0.0% Storage Swap size: 25584 KB Storage Swap capacity: 2.5% used, 97.5% free Storage Mem size: 1568 KB Storage Mem capacity: 0.3% used, 99.7% free Mean Object Size: 32.02 KB Requests given to unlinkd: 0 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 2.00247 2.00247 Cache Misses: 2.00247 2.00247 Cache Hits: 0.00000 0.00000 Near Hits: 0.00000 0.00000 Not-Modified Replies: 0.00000 0.00000 DNS Lookups: 4.65962 4.65962 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 387.118 seconds CPU Time: 35.047 seconds CPU Usage: 9.05% CPU Usage, 5 minute avg: 0.23% CPU Usage, 60 minute avg: 9.72% Process Data Segment Size via sbrk(): 250724 KB Maximum Resident Size: 1459216 KB Page faults with physical i/o: 0 Memory usage for squid via mallinfo(): Total space in arena: 251252 KB Ordinary blocks: 250303 KB 120 blks Small blocks: 0 KB 0 blks Holding blocks: 291440 KB 31 blks Free Small blocks: 0 KB Free Ordinary blocks: 949 KB Total in use: 949 KB 0% Total free: 949 KB 0% Total size: 542692 KB Memory accounted for: Total accounted: 1463 KB 0% memPool accounted: 1463 KB 0% memPool unaccounted: 541229 KB 100% memPoolAlloc calls: 52 memPoolFree calls: 98503 File descriptor usage for squid: Maximum number of file descriptors: 524288 Largest file desc currently in use: 21 Number of file desc currently in use: 33 Files queued for open: 0 Available number of file descriptors: 524255 Reserved number of file descriptors: 400 Store Disk files open: 1 Internal Data Structures: 214 StoreEntries 214 StoreEntries with MemObjects 49 Hot Object Cache Items 799 on-disk objects =================================================================== Cache Manager menu sample_start_time = 1383848634.943911 (Thu, 07 Nov 2013 18:23:54 GMT) sample_end_time = 1383848994.404908 (Thu, 07 Nov 2013 18:29:54 GMT) client_http.requests = 0.643331/sec client_http.hits = 0.000000/sec client_http.errors = 0.006667/sec client_http.kbytes_in = 0.379999/sec client_http.kbytes_out = 56.286475/sec client_http.all_median_svc_time = 2.002465 seconds client_http.miss_median_svc_time = 2.002465 seconds client_http.nm_median_svc_time = 0.000000 seconds client_http.nh_median_svc_time = 0.000000 seconds client_http.hit_median_svc_time = 0.000000 seconds server.all.requests = 0.603331/sec server.all.errors = 0.000000/sec server.all.kbytes_in = 56.173142/sec server.all.kbytes_out = 0.386665/sec server.http.requests = 0.603331/sec server.http.errors = 0.000000/sec server.http.kbytes_in = 56.173142/sec server.http.kbytes_out = 0.386665/sec server.ftp.requests = 0.000000/sec server.ftp.errors = 0.000000/sec server.ftp.kbytes_in = 0.000000/sec server.ftp.kbytes_out = 0.000000/sec server.other.requests = 0.000000/sec server.other.errors = 0.000000/sec server.other.kbytes_in = 0.000000/sec server.other.kbytes_out = 0.000000/sec icp.pkts_sent = 0.000000/sec icp.pkts_recv = 0.000000/sec icp.queries_sent = 0.000000/sec icp.replies_sent = 0.000000/sec icp.queries_recv = 0.000000/sec icp.replies_recv = 0.000000/sec icp.replies_queued = 0.000000/sec icp.query_timeouts = 0.000000/sec icp.kbytes_sent = 0.000000/sec icp.kbytes_recv = 0.000000/sec icp.q_kbytes_sent = 0.000000/sec icp.r_kbytes_sent = 0.000000/sec icp.q_kbytes_recv = 0.000000/sec icp.r_kbytes_recv = 0.000000/sec icp.query_median_svc_time = 0.000000 seconds icp.reply_median_svc_time = 0.000000 seconds dns.median_svc_time = 4.659619 seconds unlink.requests = 0.000000/sec page_faults = 0.000000/sec select_loops = 1221.763190/sec select_fds = 24.383249/sec average_select_fd_period = 0.000000/fd median_select_fds = -1.000000 swap.outs = 0.163333/sec swap.ins = 0.000000/sec swap.files_cleaned = 0.000000/sec aborted_requests = 0.026667/sec syscalls.disk.opens = 0.006667/sec syscalls.disk.closes = 0.006667/sec syscalls.disk.reads = 0.000000/sec syscalls.disk.writes = 0.163333/sec syscalls.disk.seeks = 0.000000/sec syscalls.disk.unlinks = 0.000000/sec syscalls.sock.accepts = 0.906662/sec syscalls.sock.sockets = 0.983330/sec syscalls.sock.connects = 0.616665/sec syscalls.sock.binds = 0.000000/sec syscalls.sock.closes = 1.676661/sec syscalls.sock.reads = 6.183312/sec syscalls.sock.writes = 16.389944/sec syscalls.sock.recvfroms = 0.673331/sec syscalls.sock.sendtos = 0.779997/sec cpu_time = 0.687000 seconds wall_time = 1200.007428 seconds cpu_usage = 0.057250% Generated Thu, 07 Nov 2013 18:29:54 GMT, by cachemgr.cgi/3.3.9@squid ========================================================================== * after pumping 250 users at 10:35* Cache Manager menu sample_start_time = 1383848994.404908 (Thu, 07 Nov 2013 18:29:54 GMT) sample_end_time = 1383849297.332922 (Thu, 07 Nov 2013 18:34:57 GMT) client_http.requests = 57.339965/sec client_http.hits = 2.996665/sec client_http.errors = 1.753332/sec client_http.kbytes_in = 42.156641/sec client_http.kbytes_out = 3265.764662/sec client_http.all_median_svc_time = 0.277925 seconds client_http.miss_median_svc_time = 0.298933 seconds client_http.nm_median_svc_time = 0.000000 seconds client_http.nh_median_svc_time = 0.090797 seconds client_http.hit_median_svc_time = 0.000000 seconds server.all.requests = 51.156635/sec server.all.errors = 0.000000/sec server.all.kbytes_in = 3269.724660/sec server.all.kbytes_out = 41.756641/sec server.http.requests = 51.156635/sec server.http.errors = 0.000000/sec server.http.kbytes_in = 3269.724660/sec server.http.kbytes_out = 41.756641/sec server.ftp.requests = 0.000000/sec server.ftp.errors = 0.000000/sec server.ftp.kbytes_in = 0.000000/sec server.ftp.kbytes_out = 0.000000/sec server.other.requests = 0.000000/sec server.other.errors = 0.000000/sec server.other.kbytes_in = 0.000000/sec server.other.kbytes_out = 0.000000/sec icp.pkts_sent = 0.000000/sec icp.pkts_recv = 0.000000/sec icp.queries_sent = 0.000000/sec icp.replies_sent = 0.000000/sec icp.queries_recv = 0.000000/sec icp.replies_recv = 0.000000/sec icp.replies_queued = 0.000000/sec icp.query_timeouts = 0.000000/sec icp.kbytes_sent = 0.000000/sec icp.kbytes_recv = 0.000000/sec icp.q_kbytes_sent = 0.000000/sec icp.r_kbytes_sent = 0.000000/sec icp.q_kbytes_recv = 0.000000/sec icp.r_kbytes_recv = 0.000000/sec icp.query_median_svc_time = 0.000000 seconds icp.reply_median_svc_time = 0.000000 seconds dns.median_svc_time = 5.745147 seconds unlink.requests = 0.000000/sec page_faults = 0.000000/sec select_loops = 6369.086425/sec select_fds = 1972.625470/sec average_select_fd_period = 0.000000/fd median_select_fds = -0.750000 swap.outs = 16.923323/sec swap.ins = 0.106667/sec swap.files_cleaned = 0.000000/sec aborted_requests = 3.266665/sec syscalls.disk.opens = 1.109999/sec syscalls.disk.closes = 1.109999/sec syscalls.disk.reads = 0.176667/sec syscalls.disk.writes = 16.826667/sec syscalls.disk.seeks = 0.000000/sec syscalls.disk.unlinks = 0.000000/sec syscalls.sock.accepts = 101.956603/sec syscalls.sock.sockets = 87.023290/sec syscalls.sock.connects = 54.083300/sec syscalls.sock.binds = 53.529967/sec syscalls.sock.closes = 147.856586/sec syscalls.sock.reads = 681.629588/sec syscalls.sock.writes = 1133.832646/sec syscalls.sock.recvfroms = 18.026655/sec syscalls.sock.sendtos = 30.143313/sec cpu_time = 34.626000 seconds wall_time = 1200.000613 seconds cpu_usage = 2.885499% ================================================================= Generated Thu, 07 Nov 2013 18:35:51 GMT, by cachemgr.cgi/3.3.9@squid ======================================== Cache Manager menu Squid Object Cache: Version 3.3.9 Start Time: Thu, 07 Nov 2013 18:22:47 GMT Current Time: Thu, 07 Nov 2013 18:36:28 GMT Connection information for squid: Number of clients accessing cache: 603 Number of HTTP requests received: 24710 Number of ICP messages received: 0 Number of ICP messages sent: 0 Number of queued ICP replies: 0 Number of HTCP messages received: 0 Number of HTCP messages sent: 0 Request failure ratio: 0.00 Average HTTP requests per minute since start: 1804.5 Average ICP messages per minute since start: 0.0 Select loop called: 3529673 times, 1.022 ms avg Cache information for squid: Hits as % of all requests: 5min: 3.7%, 60min: 3.6% Hits as % of bytes sent: 5min: -0.1%, 60min: -0.1% Memory hits as % of hit requests: 5min: 36.1%, 60min: 36.1% Disk hits as % of hit requests: 5min: 1.8%, 60min: 1.8% Storage Swap size: 179632 KB Storage Swap capacity: 17.5% used, 82.5% free Storage Mem size: 149536 KB Storage Mem capacity: 28.5% used, 71.5% free Mean Object Size: 32.00 KB Requests given to unlinkd: 0 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 0.28318 0.28318 Cache Misses: 0.32244 0.32244 Cache Hits: 0.00000 0.00000 Near Hits: 0.09080 0.09080 Not-Modified Replies: 0.00000 0.00000 DNS Lookups: 5.74515 5.74515 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 821.616 seconds CPU Time: 86.324 seconds CPU Usage: 10.51% CPU Usage, 5 minute avg: 15.10% CPU Usage, 60 minute avg: 10.32% Process Data Segment Size via sbrk(): 278704 KB Maximum Resident Size: 2119536 KB Page faults with physical i/o: 0 Memory usage for squid via mallinfo(): Total space in arena: 279232 KB Ordinary blocks: 273204 KB 2572 blks Small blocks: 0 KB 0 blks Holding blocks: 291440 KB 31 blks Free Small blocks: 0 KB Free Ordinary blocks: 6028 KB Total in use: 6028 KB 1% Total free: 6028 KB 1% Total size: 570672 KB Memory accounted for: Total accounted: 21831 KB 4% memPool accounted: 21831 KB 4% memPool unaccounted: 548841 KB 96% memPoolAlloc calls: 52 memPoolFree calls: 6375465 File descriptor usage for squid: Maximum number of file descriptors: 524288 Largest file desc currently in use: 886 Number of file desc currently in use: 1146 Files queued for open: 0 Available number of file descriptors: 523142 Reserved number of file descriptors: 400 Store Disk files open: 2 Internal Data Structures: 511 StoreEntries 511 StoreEntries with MemObjects 4673 Hot Object Cache Items 5613 on-disk objects Generated Thu, 07 Nov 2013 18:36:28 GMT, by cachemgr.cgi/3.3.9@squid ============================================================= *at 8:40 degradation started !!!* ================================================================= Cache Manager menu Squid Object Cache: Version 3.3.9 Start Time: Thu, 07 Nov 2013 18:22:47 GMT Current Time: Thu, 07 Nov 2013 18:40:50 GMT Connection information for squid: Number of clients accessing cache: 682 Number of HTTP requests received: 44173 Number of ICP messages received: 0 Number of ICP messages sent: 0 Number of queued ICP replies: 0 Number of HTCP messages received: 0 Number of HTCP messages sent: 0 Request failure ratio: 0.00 Average HTTP requests per minute since start: 2446.7 Average ICP messages per minute since start: 0.0 Select loop called: 5938295 times, 0.824 ms avg Cache information for squid: Hits as % of all requests: 5min: 4.0%, 60min: 4.0% Hits as % of bytes sent: 5min: -0.1%, 60min: -0.1% Memory hits as % of hit requests: 5min: 34.2%, 60min: 36.6% Disk hits as % of hit requests: 5min: 2.8%, 60min: 2.5% Storage Swap size: 275024 KB Storage Swap capacity: 26.9% used, 73.1% free Storage Mem size: 227904 KB Storage Mem capacity: 43.5% used, 56.5% free Mean Object Size: 32.00 KB Requests given to unlinkd: 0 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 0.35277 0.31556 Cache Misses: 0.39683 0.34658 Cache Hits: 0.00000 0.00000 Near Hits: 0.09080 0.09080 Not-Modified Replies: 0.00000 0.00000 DNS Lookups: 5.49589 5.57654 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 1083.267 seconds CPU Time: 130.129 seconds CPU Usage: 12.01% CPU Usage, 5 minute avg: 17.10% CPU Usage, 60 minute avg: 11.87% Process Data Segment Size via sbrk(): 279416 KB Maximum Resident Size: 2440480 KB Page faults with physical i/o: 0 Memory usage for squid via mallinfo(): Total space in arena: 279944 KB Ordinary blocks: 274059 KB 2744 blks Small blocks: 0 KB 0 blks Holding blocks: 291440 KB 31 blks Free Small blocks: 0 KB Free Ordinary blocks: 5885 KB Total in use: 5885 KB 1% Total free: 5885 KB 1% Total size: 571384 KB Memory accounted for: Total accounted: 22503 KB 4% memPool accounted: 22503 KB 4% memPool unaccounted: 548881 KB 96% memPoolAlloc calls: 52 memPoolFree calls: 11335629 File descriptor usage for squid: Maximum number of file descriptors: 524288 Largest file desc currently in use: 848 Number of file desc currently in use: 1083 Files queued for open: 0 Available number of file descriptors: 523205 Reserved number of file descriptors: 400 Store Disk files open: 3 Internal Data Structures: 508 StoreEntries 507 StoreEntries with MemObjects 7122 Hot Object Cache Items 8594 on-disk objects Generated Thu, 07 Nov 2013 18:40:49 GMT, by cachemgr.cgi/3.3.9@squid ====================================================================== Cache Manager menu sample_start_time = 1383849354.404908 (Thu, 07 Nov 2013 18:35:54 GMT) sample_end_time = 1383849657.332992 (Thu, 07 Nov 2013 18:40:57 GMT) client_http.requests = 74.816660/sec client_http.hits = 4.343333/sec client_http.errors = 1.623333/sec client_http.kbytes_in = 54.336662/sec client_http.kbytes_out = 4725.706260/sec client_http.all_median_svc_time = 0.341861 seconds client_http.miss_median_svc_time = 0.396834 seconds client_http.nm_median_svc_time = 0.000000 seconds client_http.nh_median_svc_time = 0.090797 seconds client_http.hit_median_svc_time = 0.000000 seconds server.all.requests = 65.903327/sec server.all.errors = 0.000000/sec server.all.kbytes_in = 4729.139594/sec server.all.kbytes_out = 54.566662/sec server.http.requests = 65.903327/sec server.http.errors = 0.000000/sec server.http.kbytes_in = 4729.139594/sec server.http.kbytes_out = 54.566662/sec server.ftp.requests = 0.000000/sec server.ftp.errors = 0.000000/sec server.ftp.kbytes_in = 0.000000/sec server.ftp.kbytes_out = 0.000000/sec server.other.requests = 0.000000/sec server.other.errors = 0.000000/sec server.other.kbytes_in = 0.000000/sec server.other.kbytes_out = 0.000000/sec icp.pkts_sent = 0.000000/sec icp.pkts_recv = 0.000000/sec icp.queries_sent = 0.000000/sec icp.replies_sent = 0.000000/sec icp.queries_recv = 0.000000/sec icp.replies_recv = 0.000000/sec icp.replies_queued = 0.000000/sec icp.query_timeouts = 0.000000/sec icp.kbytes_sent = 0.000000/sec icp.kbytes_recv = 0.000000/sec icp.q_kbytes_sent = 0.000000/sec icp.r_kbytes_sent = 0.000000/sec icp.q_kbytes_recv = 0.000000/sec icp.r_kbytes_recv = 0.000000/sec icp.query_median_svc_time = 0.000000 seconds icp.reply_median_svc_time = 0.000000 seconds dns.median_svc_time = 5.495891 seconds unlink.requests = 0.000000/sec page_faults = 0.000000/sec select_loops = 9235.691514/sec select_fds = 2959.706378/sec average_select_fd_period = 0.000000/fd median_select_fds = -0.750000 swap.outs = 19.856665/sec swap.ins = 0.456667/sec swap.files_cleaned = 0.000000/sec aborted_requests = 5.519999/sec syscalls.disk.opens = 0.353333/sec syscalls.disk.closes = 0.353333/sec syscalls.disk.reads = 0.563333/sec syscalls.disk.writes = 19.843324/sec syscalls.disk.seeks = 0.000000/sec syscalls.disk.unlinks = 0.000000/sec syscalls.sock.accepts = 127.843316/sec syscalls.sock.sockets = 110.706649/sec syscalls.sock.connects = 70.273327/sec syscalls.sock.binds = 69.683327/sec syscalls.sock.closes = 193.976642/sec syscalls.sock.reads = 1081.103225/sec syscalls.sock.writes = 1679.543177/sec syscalls.sock.recvfroms = 21.279997/sec syscalls.sock.sendtos = 33.633328/sec cpu_time = 50.542000 seconds wall_time = 1200.000335 seconds cpu_usage = 4.211832% enerated Thu, 07 Nov 2013 18:41:19 GMT, by cachemgr.cgi/3.3.9@squid ============================================================== *at 10:45 , squid is very bad and cant login to ssh terminal and interrupts if terminal succeed* ================================== top command top - 14:07:43 up 1 day, 5:23, 4 users, load average: 0.11, 0.15, 0.15 Tasks: 159 total, 1 running, 158 sleeping, 0 stopped, 0 zombie Cpu0 : 1.0%us, 0.3%sy, 0.0%ni, 93.9%id, 0.7%wa, 0.0%hi, 4.1%si, 0.0%st Cpu1 : 1.0%us, 1.0%sy, 0.0%ni, 97.2%id, 0.0%wa, 0.0%hi, 0.7%si, 0.0%st Cpu2 : 0.0%us, 0.0%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st Cpu3 : 2.4%us, 1.7%sy, 0.0%ni, 94.8%id, 0.0%wa, 0.0%hi, 1.0%si, 0.0%st Cpu4 : 0.7%us, 0.7%sy, 0.0%ni, 97.3%id, 0.0%wa, 0.0%hi, 1.4%si, 0.0%st Cpu5 : 1.3%us, 0.7%sy, 0.0%ni, 96.3%id, 0.0%wa, 0.0%hi, 1.7%si, 0.0%st Cpu6 : 0.7%us, 0.7%sy, 0.0%ni, 97.0%id, 0.0%wa, 0.0%hi, 1.7%si, 0.0%st Cpu7 : 0.3%us, 0.0%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 8182336k total, 7957752k used, 224584k free, 172808k buffers Swap: 0k total, 0k used, 0k free, 6897624k cached ================================================================== Cache Manager menu Squid Object Cache: Version 3.3.9 Start Time: Thu, 07 Nov 2013 18:22:47 GMT Current Time: Thu, 07 Nov 2013 18:46:38 GMT Connection information for squid: Number of clients accessing cache: 749 Number of HTTP requests received: 76299 Number of ICP messages received: 0 Number of ICP messages sent: 0 Number of queued ICP replies: 0 Number of HTCP messages received: 0 Number of HTCP messages sent: 0 Request failure ratio: 0.00 Average HTTP requests per minute since start: 3198.4 Average ICP messages per minute since start: 0.0 Select loop called: 9250833 times, 0.712 ms avg Cache information for squid: Hits as % of all requests: 5min: 5.7%, 60min: 4.7% Hits as % of bytes sent: 5min: 0.1%, 60min: 0.0% Memory hits as % of hit requests: 5min: 46.1%, 60min: 40.8% Disk hits as % of hit requests: 5min: 3.3%, 60min: 3.0% Storage Swap size: 395280 KB Storage Swap capacity: 38.6% used, 61.4% free Storage Mem size: 312704 KB Storage Mem capacity: 59.6% used, 40.4% free Mean Object Size: 32.00 KB Requests given to unlinkd: 0 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 0.25301 0.28720 Cache Misses: 0.28720 0.31417 Cache Hits: 0.00000 0.00000 Near Hits: 0.09080 0.09080 Not-Modified Replies: 0.00000 0.00000 DNS Lookups: 5.49589 5.49589 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 1431.315 seconds CPU Time: 193.163 seconds CPU Usage: 13.50% CPU Usage, 5 minute avg: 18.24% CPU Usage, 60 minute avg: 13.46% Process Data Segment Size via sbrk(): 280820 KB Maximum Resident Size: 2865248 KB Page faults with physical i/o: 0 Memory usage for squid via mallinfo(): Total space in arena: 281348 KB Ordinary blocks: 274362 KB 2359 blks Small blocks: 0 KB 0 blks Holding blocks: 291440 KB 31 blks Free Small blocks: 0 KB Free Ordinary blocks: 6986 KB Total in use: 6986 KB 1% Total free: 6986 KB 1% Total size: 572788 KB Memory accounted for: Total accounted: 22509 KB 4% memPool accounted: 22509 KB 4% memPool unaccounted: 550279 KB 96% memPoolAlloc calls: 52 memPoolFree calls: 19470245 File descriptor usage for squid: Maximum number of file descriptors: 524288 Largest file desc currently in use: 892 Number of file desc currently in use: 1121 Files queued for open: 0 Available number of file descriptors: 523167 Reserved number of file descriptors: 400 Store Disk files open: 2 Internal Data Structures: 497 StoreEntries 496 StoreEntries with MemObjects 9772 Hot Object Cache Items 12352 on-disk objects Generated Thu, 07 Nov 2013 18:46:37 GMT, by cachemgr.cgi/3.3.9@squid ================================================================== Cache Manager menu sample_start_time = 1383849714.405043 (Thu, 07 Nov 2013 18:41:54 GMT) sample_end_time = 1383850017.332992 (Thu, 07 Nov 2013 18:46:57 GMT) client_http.requests = 90.849991/sec client_http.hits = 6.389999/sec client_http.errors = 1.430000/sec client_http.kbytes_in = 70.366660/sec client_http.kbytes_out = 4938.722996/sec client_http.all_median_svc_time = 0.253008 seconds client_http.miss_median_svc_time = 0.287199 seconds client_http.nm_median_svc_time = 0.000000 seconds client_http.nh_median_svc_time = 0.090797 seconds client_http.hit_median_svc_time = 0.000000 seconds server.all.requests = 79.706659/sec server.all.errors = 0.000000/sec server.all.kbytes_in = 4931.719662/sec server.all.kbytes_out = 69.639993/sec server.http.requests = 79.706659/sec server.http.errors = 0.000000/sec server.http.kbytes_in = 4931.719662/sec server.http.kbytes_out = 69.639993/sec server.ftp.requests = 0.000000/sec server.ftp.errors = 0.000000/sec server.ftp.kbytes_in = 0.000000/sec server.ftp.kbytes_out = 0.000000/sec server.other.requests = 0.000000/sec server.other.errors = 0.000000/sec server.other.kbytes_in = 0.000000/sec server.other.kbytes_out = 0.000000/sec icp.pkts_sent = 0.000000/sec icp.pkts_recv = 0.000000/sec icp.queries_sent = 0.000000/sec icp.replies_sent = 0.000000/sec icp.queries_recv = 0.000000/sec icp.replies_recv = 0.000000/sec icp.replies_queued = 0.000000/sec icp.query_timeouts = 0.000000/sec icp.kbytes_sent = 0.000000/sec icp.kbytes_recv = 0.000000/sec icp.q_kbytes_sent = 0.000000/sec icp.r_kbytes_sent = 0.000000/sec icp.q_kbytes_recv = 0.000000/sec icp.r_kbytes_recv = 0.000000/sec icp.query_median_svc_time = 0.000000 seconds icp.reply_median_svc_time = 0.000000 seconds dns.median_svc_time = 5.415243 seconds unlink.requests = 0.000000/sec page_faults = 0.000000/sec select_loops = 9473.238553/sec select_fds = 3062.906428/sec average_select_fd_period = 0.000000/fd median_select_fds = -0.750000 swap.outs = 23.526664/sec swap.ins = 0.493333/sec swap.files_cleaned = 0.000000/sec aborted_requests = 5.513333/sec syscalls.disk.opens = 0.373333/sec syscalls.disk.closes = 0.373333/sec syscalls.disk.reads = 0.870000/sec syscalls.disk.writes = 23.640000/sec syscalls.disk.seeks = 0.000000/sec syscalls.disk.unlinks = 0.000000/sec syscalls.sock.accepts = 154.756643/sec syscalls.sock.sockets = 131.653323/sec syscalls.sock.connects = 83.856659/sec syscalls.sock.binds = 83.043326/sec syscalls.sock.closes = 231.946647/sec syscalls.sock.reads = 1084.103251/sec syscalls.sock.writes = 1738.646543/sec syscalls.sock.recvfroms = 23.476662/sec syscalls.sock.sendtos = 37.269994/sec cpu_time = 54.046000 seconds wall_time = 1200.000237 seconds cpu_usage = 4.503832% Generated Thu, 07 Nov 2013 18:47:06 GMT, by cachemgr.cgi/3.3.9@squid ========================= just to hint , the free memory before using squid is 1 g and after some time the free is about 200 M could this be the problem ??? i did my best to let squid far from memory problems . ========= currently i stopped squid and want to fix the issue before using the other servers and pump more users regards ----- Dr.x -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/is-there-any-thing-wrong-from-cache-manager-logs-tp4663156p4663169.html 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