Hi guys , I have server with about 1000 users and its okay with 2 workers Now I added more 1000 and its now 2000 users with 4 workers But sometime some process of squid get killed suddenly and here is log below , Here is sysctl.conf [root@Largerock-squid ~]# cat /etc/sysctl.conf # Kernel sysctl configuration file for Red Hat Linux # # For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and # sysctl.conf(5) for more details. # Controls IP packet forwarding ################net.ipv4.ip_forward = 0 net.ipv4.ip_forward = 1 # Controls source route verification #################net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.default.rp_filter = 0 ################################### net.ipv4.conf.all.rp_filter = 0 net.ipv4.conf.eth0.rp_filter = 0 ############################### # Do not accept source routing net.ipv4.conf.default.accept_source_route = 0 # Controls the System Request debugging functionality of the kernel kernel.sysrq = 0 # Controls whether core dumps will append the PID to the core filename. # Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1 # Controls the use of TCP syncookies net.ipv4.tcp_syncookies = 1 # Disable netfilter on bridges. net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 # Controls the default maxmimum size of a mesage queue kernel.msgmnb = 65536 # Controls the maximum size of a message, in bytes kernel.msgmax = 65536 # Controls the maximum shared segment size, in bytes kernel.shmmax = 68719476736 # Controls the maximum number of shared memory segments, in pages kernel.shmall = 4294967296 ################################ ############################### fs.file-max = 1131072 net.local.dgram.recvspace = 1262144 net.local.dgram.maxdgram = 116384 net.netfilter.nf_conntrack_max = 1130000 ######################################## net.nf_conntrack_max = 1131072 ######################################### ####kernel: possible SYN flooding on port 80. Sending cookies.##### net.ipv4.tcp_syncookies=0 im wondering wt should I do , or modify my kernel linux the error code is below : Nov 7 14:52:16 Largerock-squid snmpd[1576]: Connection from UDP: [xxx]:57067xxx] Nov 7 14:52:17 Largerock-squid kernel: snmpd invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0 Nov 7 14:52:17 Largerock-squid kernel: snmpd cpuset=/ mems_allowed=0 Nov 7 14:52:17 Largerock-squid kernel: Pid: 1576, comm: snmpd Not tainted 2.6.32-431.el6.x86_64 #1 Nov 7 14:52:17 Largerock-squid kernel: Call Trace: Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff810d05b1>] ? cpuset_print_task_mems_allowed+0x91/0xb0 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff81122960>] ? dump_header+0x90/0x1b0 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8122798c>] ? security_real_capable_noaudit+0x3c/0x70 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff81122de2>] ? oom_kill_process+0x82/0x2a0 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff81122d21>] ? select_bad_process+0xe1/0x120 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff81123220>] ? out_of_memory+0x220/0x3c0 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8112fb3c>] ? __alloc_pages_nodemask+0x8ac/0x8d0 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff81167a9a>] ? alloc_pages_current+0xaa/0x110 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8111fd57>] ? __page_cache_alloc+0x87/0x90 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8111f73e>] ? find_get_page+0x1e/0xa0 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff81120cf7>] ? filemap_fault+0x1a7/0x500 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8114a084>] ? __do_fault+0x54/0x530 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8114a657>] ? handle_pte_fault+0xf7/0xb00 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff81447c54>] ? move_addr_to_kernel+0x64/0x70 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff810129de>] ? copy_user_generic+0xe/0x20 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8114b28a>] ? handle_mm_fault+0x22a/0x300 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8104a8d8>] ? __do_page_fault+0x138/0x480 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff81448119>] ? sys_sendto+0x139/0x190 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff810149b9>] ? read_tsc+0x9/0x20 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff810a70a1>] ? ktime_get_ts+0xb1/0xf0 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8119fb18>] ? poll_select_copy_remaining+0xf8/0x150 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8152d45e>] ? do_page_fault+0x3e/0xa0 Nov 7 14:52:17 Largerock-squid kernel: [<ffffffff8152a815>] ? page_fault+0x25/0x30 Nov 7 14:52:17 Largerock-squid kernel: Mem-Info: Nov 7 14:52:17 Largerock-squid kernel: Node 0 DMA per-cpu: Nov 7 14:52:17 Largerock-squid kernel: CPU 0: hi: 0, btch: 1 usd: 0 Nov 7 14:52:17 Largerock-squid kernel: CPU 1: hi: 0, btch: 1 usd: 0 Nov 7 14:52:17 Largerock-squid kernel: CPU 2: hi: 0, btch: 1 usd: 0 Nov 7 14:52:17 Largerock-squid kernel: CPU 3: hi: 0, btch: 1 usd: 0 Nov 7 14:52:17 Largerock-squid kernel: CPU 4: hi: 0, btch: 1 usd: 0 Nov 7 14:52:17 Largerock-squid kernel: CPU 5: hi: 0, btch: 1 usd: 0 Nov 7 14:52:17 Largerock-squid kernel: CPU 6: hi: 0, btch: 1 usd: 0 Nov 7 14:52:17 Largerock-squid kernel: CPU 7: hi: 0, btch: 1 usd: 0 Nov 7 14:52:17 Largerock-squid kernel: Node 0 DMA32 per-cpu: Nov 7 14:52:17 Largerock-squid kernel: CPU 0: hi: 186, btch: 31 usd: 77 Nov 7 14:52:17 Largerock-squid kernel: CPU 1: hi: 186, btch: 31 usd: 34 Nov 7 14:52:17 Largerock-squid kernel: CPU 2: hi: 186, btch: 31 usd: 31 Nov 7 14:52:17 Largerock-squid kernel: CPU 3: hi: 186, btch: 31 usd: 33 Nov 7 14:52:17 Largerock-squid kernel: CPU 4: hi: 186, btch: 31 usd: 24 Nov 7 14:52:17 Largerock-squid kernel: CPU 5: hi: 186, btch: 31 usd: 24 Nov 7 14:52:17 Largerock-squid kernel: CPU 6: hi: 186, btch: 31 usd: 22 Nov 7 14:52:17 Largerock-squid kernel: CPU 7: hi: 186, btch: 31 usd: 17 Nov 7 14:52:17 Largerock-squid kernel: Node 0 Normal per-cpu: Nov 7 14:52:17 Largerock-squid kernel: CPU 0: hi: 186, btch: 31 usd: 148 Nov 7 14:52:17 Largerock-squid kernel: CPU 1: hi: 186, btch: 31 usd: 59 Nov 7 14:52:17 Largerock-squid kernel: CPU 2: hi: 186, btch: 31 usd: 64 Nov 7 14:52:17 Largerock-squid kernel: CPU 3: hi: 186, btch: 31 usd: 34 Nov 7 14:52:17 Largerock-squid kernel: CPU 4: hi: 186, btch: 31 usd: 21 Nov 7 14:52:17 Largerock-squid kernel: CPU 5: hi: 186, btch: 31 usd: 22 Nov 7 14:52:17 Largerock-squid kernel: CPU 6: hi: 186, btch: 31 usd: 50 Nov 7 14:52:17 Largerock-squid kernel: CPU 7: hi: 186, btch: 31 usd: 55 Nov 7 14:52:17 Largerock-squid kernel: active_anon:3847274 inactive_anon:2365500 isolated_anon:0 Nov 7 14:52:17 Largerock-squid kernel: active_file:77 inactive_file:0 isolated_file:32 Nov 7 14:52:17 Largerock-squid kernel: unevictable:0 dirty:1 writeback:0 unstable:0 Nov 7 14:52:17 Largerock-squid kernel: free:41667 slab_reclaimable:28547 slab_unreclaimable:280933 Nov 7 14:52:17 Largerock-squid kernel: mapped:2365635 shmem:2365544 pagetables:48036 bounce:0 Nov 7 14:52:17 Largerock-squid kernel: Node 0 DMA free:15548kB min:36kB low:44kB high:52kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15156kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes Nov 7 14:52:17 Largerock-squid kernel: lowmem_reserve[]: 0 3000 26482 26482 Nov 7 14:52:17 Largerock-squid kernel: Node 0 DMA32 free:101504kB min:7652kB low:9564kB high:11476kB active_anon:1681480kB inactive_anon:47812kB active_file:8kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3072160kB mlocked:0kB dirty:0kB writeback:0kB mapped:47836kB shmem:47812kB slab_reclaimable:18296kB slab_unreclaimable:591000kB kernel_stack:56kB pagetables:3520kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:64 all_unreclaimable? yes Nov 7 14:52:17 Largerock-squid kernel: lowmem_reserve[]: 0 0 23482 23482 Nov 7 14:52:17 Largerock-squid kernel: Node 0 Normal free:49616kB min:59892kB low:74864kB high:89836kB active_anon:13707616kB inactive_anon:9414188kB active_file:300kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):128kB present:24046080kB mlocked:0kB dirty:4kB writeback:0kB mapped:9414704kB shmem:9414364kB slab_reclaimable:95892kB slab_unreclaimable:533024kB kernel_stack:1648kB pagetables:188624kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:458 all_unreclaimable? yes Nov 7 14:52:17 Largerock-squid kernel: lowmem_reserve[]: 0 0 0 0 Nov 7 14:52:17 Largerock-squid kernel: Node 0 DMA: 1*4kB 1*8kB 1*16kB 1*32kB 2*64kB 0*128kB 0*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15548kB Nov 7 14:52:17 Largerock-squid kernel: Node 0 DMA32: 23974*4kB 1*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB 1*4096kB = 102048kB Nov 7 14:52:17 Largerock-squid kernel: Node 0 Normal: 11163*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 48748kB Nov 7 14:52:17 Largerock-squid kernel: 2365580 total pagecache pages Nov 7 14:52:17 Largerock-squid kernel: 0 pages in swap cache Nov 7 14:52:17 Largerock-squid kernel: Swap cache stats: add 0, delete 0, find 0/0 Nov 7 14:52:17 Largerock-squid kernel: Free swap = 0kB Nov 7 14:52:17 Largerock-squid kernel: Total swap = 0kB Nov 7 14:52:17 Largerock-squid kernel: 6881264 pages RAM Nov 7 14:52:17 Largerock-squid kernel: 147804 pages reserved Nov 7 14:52:17 Largerock-squid kernel: 4911130 pages shared Nov 7 14:52:17 Largerock-squid kernel: 4272662 pages non-shared Nov 7 14:52:17 Largerock-squid kernel: [ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name Nov 7 14:52:17 Largerock-squid kernel: [ 500] 0 500 2737 179 5 -17 -1000 udevd Nov 7 14:52:17 Largerock-squid kernel: [ 921] 0 921 2662 107 6 -17 -1000 udevd Nov 7 14:52:17 Largerock-squid kernel: [ 922] 0 922 2662 107 7 -17 -1000 udevd Nov 7 14:52:17 Largerock-squid kernel: [ 1230] 0 1230 23294 68 4 -17 -1000 auditd Nov 7 14:52:17 Largerock-squid kernel: [ 1254] 0 1254 1540 24 4 0 0 portreserve Nov 7 14:52:17 Largerock-squid kernel: [ 1261] 0 1261 63856 235 1 0 0 rsyslogd Nov 7 14:52:17 Largerock-squid kernel: [ 1290] 0 1290 2738 62 6 0 0 irqbalance Nov 7 14:52:17 Largerock-squid kernel: [ 1304] 32 1304 4744 62 6 0 0 rpcbind Nov 7 14:52:17 Largerock-squid kernel: [ 1322] 29 1322 5837 114 1 0 0 rpc.statd Nov 7 14:52:17 Largerock-squid kernel: [ 1432] 81 1432 5351 71 2 0 0 dbus-daemon Nov 7 14:52:17 Largerock-squid kernel: [ 1448] 0 1448 47336 223 4 0 0 cupsd Nov 7 14:52:17 Largerock-squid kernel: [ 1473] 0 1473 1020 27 5 0 0 acpid Nov 7 14:52:17 Largerock-squid kernel: [ 1482] 68 1482 9476 234 1 0 0 hald Nov 7 14:52:17 Largerock-squid kernel: [ 1483] 0 1483 5082 54 4 0 0 hald-runner Nov 7 14:52:17 Largerock-squid kernel: [ 1512] 0 1512 5612 41 5 0 0 hald-addon-inpu Nov 7 14:52:17 Largerock-squid kernel: [ 1530] 68 1530 4484 36 4 0 0 hald-addon-acpi Nov 7 14:52:17 Largerock-squid kernel: [ 1551] 0 1551 96434 124 1 0 0 automount Nov 7 14:52:17 Largerock-squid kernel: [ 1567] 0 1567 1570 32 4 0 0 mcelog Nov 7 14:52:17 Largerock-squid kernel: [ 1576] 0 1576 49460 955 5 0 0 snmpd Nov 7 14:52:17 Largerock-squid kernel: [ 1588] 0 1588 16655 177 4 -17 -1000 sshd Nov 7 14:52:17 Largerock-squid kernel: [ 1664] 0 1664 20326 226 6 0 0 master Nov 7 14:52:17 Largerock-squid kernel: [ 1677] 89 1677 20389 221 0 0 0 qmgr Nov 7 14:52:17 Largerock-squid kernel: [ 1688] 0 1688 27580 35 1 0 0 abrtd Nov 7 14:52:17 Largerock-squid kernel: [ 1703] 0 1703 29324 152 2 0 0 crond Nov 7 14:52:17 Largerock-squid kernel: [ 1717] 500 1717 5166698 14730 4 0 0 squid Nov 7 14:52:17 Largerock-squid kernel: [ 1719] 500 1719 5168582 21614 0 0 0 squid Nov 7 14:52:17 Largerock-squid kernel: [ 1721] 500 1721 6119473 2180266 6 0 0 squid Nov 7 14:52:17 Largerock-squid kernel: [ 1722] 500 1722 6136601 2165217 4 0 0 squid Nov 7 14:52:17 Largerock-squid kernel: [ 1723] 500 1723 6252323 2575690 4 0 0 squid Nov 7 14:52:17 Largerock-squid kernel: [ 1724] 500 1724 5950985 1737617 0 0 0 squid Nov 7 14:52:17 Largerock-squid kernel: [ 1742] 0 1742 5385 46 1 0 0 atd Nov 7 14:52:17 Largerock-squid kernel: [ 1754] 0 1754 15587 89 4 0 0 certmonger Nov 7 14:52:17 Largerock-squid kernel: [ 1770] 0 1770 1016 18 4 0 0 mingetty Nov 7 14:52:17 Largerock-squid kernel: [ 1772] 0 1772 1016 18 3 0 0 mingetty Nov 7 14:52:17 Largerock-squid kernel: [ 1774] 0 1774 1016 19 6 0 0 mingetty Nov 7 14:52:17 Largerock-squid kernel: [ 1776] 0 1776 1016 19 2 0 0 mingetty Nov 7 14:52:17 Largerock-squid kernel: [ 1778] 0 1778 1016 17 6 0 0 mingetty Nov 7 14:52:17 Largerock-squid kernel: [ 1780] 0 1780 1016 19 5 0 0 mingetty Nov 7 14:52:17 Largerock-squid kernel: [ 7149] 89 7149 20346 220 4 0 0 pickup Nov 7 14:52:17 Largerock-squid kernel: [ 7295] 0 7295 25095 264 6 0 0 sshd Nov 7 14:52:17 Largerock-squid kernel: [ 7297] 0 7297 27085 90 7 0 0 bash Nov 7 14:52:17 Largerock-squid kernel: [ 7316] 0 7316 28210 211 0 0 0 htop Nov 7 14:52:17 Largerock-squid kernel: [ 7339] 0 7339 27085 91 5 0 0 bash Nov 7 14:52:17 Largerock-squid kernel: [ 7360] 0 7360 25224 31 6 0 0 tailf Nov 7 14:52:17 Largerock-squid kernel: [ 7361] 0 7361 27085 93 3 0 0 bash Nov 7 14:52:17 Largerock-squid kernel: [ 7380] 0 7380 27057 220 4 0 0 nano Nov 7 14:52:17 Largerock-squid kernel: [ 7383] 0 7383 27085 89 5 0 0 bash Nov 7 14:52:17 Largerock-squid kernel: [ 7402] 0 7402 27590 226 0 0 0 iptraf Nov 7 14:52:17 Largerock-squid kernel: [ 7412] 0 7412 27085 91 4 0 0 bash Nov 7 14:52:17 Largerock-squid kernel: [ 7431] 0 7431 25224 30 5 0 0 tailf Nov 7 14:52:17 Largerock-squid kernel: Out of memory: Kill process 1723 (squid) score 384 or sacrifice child Nov 7 14:52:17 Largerock-squid kernel: Killed process 1723, UID 500, (squid) total-vm:25009292kB, anon-rss:4356424kB, file-rss:5946336kB |
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