On Tue, 20 May 2008 09:15:18 -0700, Gordon Messmer wrote: > This morning I noticed that firefox had crashed overnight, and the > desktop was behaving very slow, as if the machine were swapping heavily. > I expected to see some bloated process in "top"s output, but after > sorting the processes by memory, I saw nothing unusual. Applications > were fairly normal, but there was very little free memory. > > Next, I turned to /proc/meminfo, and it looks like the kernel had > allocated 1.4GB of slab! According to the slabinfo file, there were > nearly 7 million dentry slabs "active" (if I'm reading it correctly). I > don't really understand the dentry cache, but it seems odd to have 7M > dentry caches when I have fewer than 500k files and directories total on > all of the mounted filesystems. > > There's nothing odd in the logs except this: > > May 20 03:24:44 herald kernel: printk: 37 messages suppressed. > > The kernel didn't print any messages in several hours prior to 3:24, and > nothing afterward until I rebooted the system. Unfortunately, I didn't > check "dmesg" before rebooting. :( > > Not much was running overnight: I was logged in to Gnome, Thunderbird > and Firefox were running, and so was Miro. > > Before I file a bug report, I was hoping to see if anyone else has seen > this behaviour, or can shed any light on possible causes other than a > kernel bug. > > Copies of the meminfo and slabinfo files from /proc, taken before > rebooting, are attached. > MemTotal: 2061404 kB > MemFree: 227456 kB > Buffers: 2752 kB > Cached: 98996 kB > SwapCached: 39640 kB > Active: 288544 kB > Inactive: 41160 kB > SwapTotal: 2064376 kB > SwapFree: 1937560 kB > Dirty: 8 kB > Writeback: 0 kB > AnonPages: 212972 kB > Mapped: 42116 kB > Slab: 1448668 kB > SReclaimable: 1421052 kB > SUnreclaim: 27616 kB > PageTables: 25564 kB > NFS_Unstable: 4 kB > Bounce: 0 kB > CommitLimit: 3095076 kB > Committed_AS: 706336 kB > VmallocTotal: 34359738367 kB > VmallocUsed: 83940 kB > VmallocChunk: 34359654311 kB > HugePages_Total: 0 > HugePages_Free: 0 > HugePages_Rsvd: 0 > HugePages_Surp: 0 > Hugepagesize: 2048 kB > slabinfo - version: 2.1 > # name <active_objs> <num_objs> <objsize> <objperslab> > <pagesperslab> : tunables <limit> <batchcount> <sharedfactor> : slabdata > <active_slabs> <num_slabs> <sharedavail> udf_inode_cache 6 6 > 640 6 1 : tunables 0 0 0 : slabdata 1 1 > 0 nfs_direct_cache 0 0 128 32 1 : tunables 0 0 > 0 : slabdata 0 0 0 nfs_inode_cache 350 372 > 992 4 1 : tunables 0 0 0 : slabdata 93 93 0 > fuse_request 14 14 584 7 1 : tunables 0 0 > 0 : slabdata 2 2 0 fuse_inode 6 6 640 > 6 1 : tunables 0 0 0 : slabdata 1 1 0 > rpc_inode_cache 18 18 832 9 2 : tunables 0 0 > 0 : slabdata 2 2 0 nf_conntrack_expect 0 0 > 240 17 1 : tunables 0 0 0 : slabdata 0 0 0 > UDPv6 12 12 960 4 1 : tunables 0 0 > 0 : slabdata 3 3 0 TCPv6 8 8 1792 > 4 2 : tunables 0 0 0 : slabdata 2 2 0 > kmalloc_dma-512 8 8 512 8 1 : tunables 0 0 > 0 : slabdata 1 1 0 dm_uevent 0 0 2608 > 3 2 : tunables 0 0 0 : slabdata 0 0 0 > scsi_io_context 144 144 112 36 1 : tunables 0 0 > 0 : slabdata 4 4 0 ext3_inode_cache 2414 3830 768 > 5 1 : tunables 0 0 0 : slabdata 766 766 0 > ext3_xattr 92 92 88 46 1 : tunables 0 0 > 0 : slabdata 2 2 0 journal_handle 340 340 24 > 170 1 : tunables 0 0 0 : slabdata 2 2 0 > journal_head 85 126 96 42 1 : tunables 0 0 > 0 : slabdata 3 3 0 revoke_table 256 256 16 > 256 1 : tunables 0 0 0 : slabdata 1 1 0 > revoke_record 256 256 32 128 1 : tunables 0 0 > 0 : slabdata 2 2 0 UNIX 538 561 704 > 11 2 : tunables 0 0 0 : slabdata 51 51 0 > cfq_io_context 101 120 168 24 1 : tunables 0 0 > 0 : slabdata 5 5 0 cfq_queue 107 120 136 > 30 1 : tunables 0 0 0 : slabdata 4 4 0 > mqueue_inode_cache 4 4 896 4 1 : tunables 0 0 > 0 : slabdata 1 1 0 isofs_inode_cache 0 0 > 616 6 1 : tunables 0 0 0 : slabdata 0 0 0 > hugetlbfs_inode_cache 7 7 584 7 1 : tunables 0 > 0 0 : slabdata 1 1 0 dquot 0 0 > 256 16 1 : tunables 0 0 0 : slabdata 0 0 0 > shmem_inode_cache 939 950 792 5 1 : tunables 0 0 > 0 : slabdata 190 190 0 pid_namespace 0 0 2104 > 3 2 : tunables 0 0 0 : slabdata 0 0 0 > nsproxy 0 0 56 73 1 : tunables 0 0 > 0 : slabdata 0 0 0 xfrm_dst_cache 28 30 384 > 10 1 : tunables 0 0 0 : slabdata 3 3 0 > ip_dst_cache 132 552 320 12 1 : tunables 0 0 > 0 : slabdata 46 46 0 TCP 19 24 1664 > 4 2 : tunables 0 0 0 : slabdata 6 6 0 > blkdev_queue 32 32 1752 4 2 : tunables 0 0 > 0 : slabdata 8 8 0 blkdev_requests 30 39 296 > 13 1 : tunables 0 0 0 : slabdata 3 3 0 > biovec-128 52 56 2048 4 2 : tunables 0 0 > 0 : slabdata 14 14 0 sock_inode_cache 594 649 704 > 11 2 : tunables 0 0 0 : slabdata 59 59 0 > file_lock_cache 42 42 192 21 1 : tunables 0 0 > 0 : slabdata 2 2 0 Acpi-Parse 714 714 40 > 102 1 : tunables 0 0 0 : slabdata 7 7 0 > taskstats 26 26 312 13 1 : tunables 0 0 > 0 : slabdata 2 2 0 proc_inode_cache 767 786 600 > 6 1 : tunables 0 0 0 : slabdata 131 131 0 > sigqueue 50 50 160 25 1 : tunables 0 0 > 0 : slabdata 2 2 0 radix_tree_node 3353 4515 560 > 7 1 : tunables 0 0 0 : slabdata 645 645 0 > bdev_cache 30 30 768 5 1 : tunables 0 0 > 0 : slabdata 6 6 0 sysfs_dir_cache 9129 9129 80 > 51 1 : tunables 0 0 0 : slabdata 179 179 0 > inode_cache 1614 1645 568 7 1 : tunables 0 0 > 0 : slabdata 235 235 0 dentry 6722227 6722295 > 208 19 1 : tunables 0 0 0 : slabdata 353805 353805 0 > names_cache 40 40 4096 2 2 : tunables 0 0 > 0 : slabdata 20 20 0 selinux_inode_security 7505 19152 > 72 56 1 : tunables 0 0 0 : slabdata 342 342 0 > idr_layer_cache 509 525 536 7 1 : tunables 0 0 > 0 : slabdata 75 75 0 buffer_head 1495 3384 112 > 36 1 : tunables 0 0 0 : slabdata 94 94 0 > mm_struct 105 126 832 9 2 : tunables 0 0 > 0 : slabdata 14 14 0 vm_area_struct 11692 12627 176 > 23 1 : tunables 0 0 0 : slabdata 549 549 0 > files_cache 166 180 768 5 1 : tunables 0 0 > 0 : slabdata 36 36 0 signal_cache 141 152 896 > 4 1 : tunables 0 0 0 : slabdata 38 38 0 > sighand_cache 139 147 2112 3 2 : tunables 0 0 > 0 : slabdata 49 49 0 task_struct 224 224 6272 > 1 2 : tunables 0 0 0 : slabdata 224 224 0 > anon_vma 4095 4992 32 128 1 : tunables 0 0 > 0 : slabdata 39 39 0 shared_policy_node 0 0 > 48 85 1 : tunables 0 0 0 : slabdata 0 0 0 > numa_policy 295708 295970 24 170 1 : tunables 0 0 > 0 : slabdata 1741 1741 0 kmalloc-4096 99 104 4096 > 8 8 : tunables 0 0 0 : slabdata 13 13 0 > kmalloc-2048 1103 1152 2048 16 8 : tunables 0 0 > 0 : slabdata 72 72 0 kmalloc-1024 599 624 1024 > 4 1 : tunables 0 0 0 : slabdata 156 156 0 > kmalloc-512 245 264 512 8 1 : tunables 0 0 > 0 : slabdata 33 33 0 kmalloc-256 913 976 256 > 16 1 : tunables 0 0 0 : slabdata 61 61 0 > kmalloc-128 748 960 128 32 1 : tunables 0 0 > 0 : slabdata 30 30 0 kmalloc-64 4954 7168 64 > 64 1 : tunables 0 0 0 : slabdata 112 112 0 > kmalloc-32 25988 27392 32 128 1 : tunables 0 0 > 0 : slabdata 214 214 0 kmalloc-16 126907 127744 16 > 256 1 : tunables 0 0 0 : slabdata 499 499 0 > kmalloc-8 9179 9216 8 512 1 : tunables 0 0 > 0 : slabdata 18 18 0 kmalloc-192 5706 6909 192 > 21 1 : tunables 0 0 0 : slabdata 329 329 0 > kmalloc-96 2979 3360 96 42 1 : tunables 0 0 > 0 : slabdata 80 80 0 kmem_cache_node 0 0 56 > 73 1 : tunables 0 0 0 : slabdata 0 0 0 Mine looks ok: more /proc/meminfo MemTotal: 1537948 kB MemFree: 290780 kB Buffers: 67920 kB Cached: 689064 kB SwapCached: 4 kB Active: 560348 kB Inactive: 478792 kB HighTotal: 638140 kB HighFree: 40424 kB LowTotal: 899808 kB LowFree: 250356 kB SwapTotal: 3068372 kB SwapFree: 3068220 kB Dirty: 52 kB Writeback: 0 kB AnonPages: 276684 kB Mapped: 70920 kB Slab: 82964 kB SReclaimable: 53528 kB SUnreclaim: 29436 kB PageTables: 4692 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 3837344 kB Committed_AS: 1029028 kB VmallocTotal: 110584 kB VmallocUsed: 8700 kB VmallocChunk: 95044 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 4096 kB -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
