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Description of problem: When this system is under fairly heavy load it likes to spew this message, repeatedly to the logs: pkg info: 2.6.32-220.4.1.el6.x86_64 kernel: httpd: page allocation failure. order:1, mode:0x20 kernel: Pid: 16505, comm: httpd Not tainted 2.6.32-220.4.1.el6.x86_64 #1 kernel: [<ffffffff81123daf>] ? __alloc_pages_nodemask+0x77f/0x940 kernel: [<ffffffff8115dc62>] ? kmem_getpages+0x62/0x170 kernel: [<ffffffff8115e87a>] ? fallback_alloc+0x1ba/0x270 kernel: [<ffffffff8115e2cf>] ? cache_grow+0x2cf/0x320 kernel: [<ffffffff8115e5f9>] ? ____cache_alloc_node+0x99/0x160 kernel: [<ffffffff8115ee3a>] ? kmem_cache_alloc_notrace+0xfa/0x130 kernel: [<ffffffff810cbada>] ? audit_log_d_path+0x5a/0x140 kernel: [<ffffffff8122fd83>] ? common_lsm_audit+0x2e3/0x540 kernel: [<ffffffff81212ef3>] ? avc_audit+0x73/0xe0 kernel: [<ffffffff8121363f>] ? avc_has_perm_noaudit+0x3df/0x470 kernel: [<ffffffff81213741>] ? avc_has_perm+0x71/0x90 kernel: [<ffffffff81215144>] ? inode_has_perm+0x54/0xa0 kernel: [<ffffffff81195630>] ? mntput_no_expire+0x30/0x110 kernel: [<ffffffff81183601>] ? path_put+0x31/0x40 kernel: [<ffffffff8121571b>] ? dentry_has_perm+0x5b/0x80 kernel: [<ffffffff81212f60>] ? avc_audit_pre_callback+0x0/0x130 kernel: [<ffffffff81213090>] ? avc_audit_post_callback+0x0/0x150 kernel: [<ffffffff812157cc>] ? selinux_inode_getattr+0x2c/0x30 kernel: [<ffffffff8120d1e3>] ? security_inode_getattr+0x23/0x30 kernel: [<ffffffff8117b6ef>] ? vfs_getattr+0x2f/0x80 kernel: [<ffffffff81038488>] ? pvclock_clocksource_read+0x58/0xd0 kernel: [<ffffffff8117b7a8>] ? vfs_fstatat+0x68/0x80 kernel: [<ffffffff8117b8eb>] ? vfs_stat+0x1b/0x20 kernel: [<ffffffff8117b914>] ? sys_newstat+0x24/0x50 kernel: [<ffffffff814f23fe>] ? do_page_fault+0x3e/0xa0 kernel: [<ffffffff814ef7b5>] ? page_fault+0x25/0x30 kernel: [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b kernel: Mem-Info: kernel: Node 0 DMA per-cpu: kernel: CPU 0: hi: 0, btch: 1 usd: 0 kernel: CPU 1: hi: 0, btch: 1 usd: 0 kernel: CPU 2: hi: 0, btch: 1 usd: 0 kernel: CPU 3: hi: 0, btch: 1 usd: 0 kernel: Node 0 DMA32 per-cpu: kernel: CPU 0: hi: 186, btch: 31 usd: 39 kernel: CPU 1: hi: 186, btch: 31 usd: 177 kernel: CPU 2: hi: 186, btch: 31 usd: 95 kernel: CPU 3: hi: 186, btch: 31 usd: 159 kernel: Node 0 Normal per-cpu: kernel: CPU 0: hi: 186, btch: 31 usd: 92 kernel: CPU 1: hi: 186, btch: 31 usd: 165 kernel: CPU 2: hi: 186, btch: 31 usd: 156 kernel: CPU 3: hi: 186, btch: 31 usd: 165 kernel: active_anon:63224 inactive_anon:24396 isolated_anon:0 kernel: active_file:442466 inactive_file:1295410 isolated_file:0 kernel: unevictable:9061 dirty:31 writeback:0 unstable:0 kernel: free:62628 slab_reclaimable:64402 slab_unreclaimable:23859 kernel: mapped:4288 shmem:139 pagetables:3636 bounce:0 kernel: Node 0 DMA free:15724kB min:124kB low:152kB high:184kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15336kB 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 kernel: lowmem_reserve[]: 0 3512 8057 8057 kernel: Node 0 DMA32 free:120872kB min:29404kB low:36752kB high:44104kB active_anon:92088kB inactive_anon:39260kB active_file:650356kB inactive_file:2269912kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3596500kB mlocked:0kB dirty:24kB writeback:0kB mapped:1228kB shmem:48kB slab_reclaimable:123620kB slab_unreclaimable:23444kB kernel_stack:264kB pagetables:3536kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no kernel: lowmem_reserve[]: 0 0 4545 4545 kernel: Node 0 Normal free:109948kB min:38052kB low:47564kB high:57076kB active_anon:164764kB inactive_anon:58324kB active_file:1119508kB inactive_file:2911728kB unevictable:36244kB isolated(anon):0kB isolated(file):0kB present:4654080kB mlocked:11716kB dirty:100kB writeback:0kB mapped:15924kB shmem:508kB slab_reclaimable:133988kB slab_unreclaimable:71992kB kernel_stack:1616kB pagetables:11008kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no kernel: lowmem_reserve[]: 0 0 0 0 kernel: Node 0 DMA: 3*4kB 2*8kB 1*16kB 2*32kB 2*64kB 1*128kB 0*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15724kB kernel: Node 0 DMA32: 20132*4kB 4261*8kB 289*16kB 13*32kB 19*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 120872kB kernel: Node 0 Normal: 20515*4kB 3168*8kB 37*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 107996kB kernel: 1738870 total pagecache pages kernel: 61 pages in swap cache kernel: Swap cache stats: add 211, delete 150, find 605802/605804 kernel: Free swap = 2096824kB kernel: Total swap = 2097144kB kernel: 2097151 pages RAM kernel: 82172 pages reserved kernel: 506921 pages shared kernel: 1526802 pages non-shared
Since RHEL 6.3 External Beta has begun, and this bug remains unresolved, it has been rejected as it is not proposed as exception or blocker. Red Hat invites you to ask your support representative to propose this request, if appropriate and relevant, in the next release of Red Hat Enterprise Linux.
This request was not resolved in time for the current release. Red Hat invites you to ask your support representative to propose this request, if still desired, for consideration in the next release of Red Hat Enterprise Linux.
Out of memory under load - hardly a bug Closing