* Re: memory leak in recent (3.x) kernels? [not found] <20120622112614.GA17413@msgid.wurtel.net> @ 2012-06-28 15:22 ` Michal Hocko 2012-06-28 17:20 ` Paul Slootman 0 siblings, 1 reply; 2+ messages in thread From: Michal Hocko @ 2012-06-28 15:22 UTC (permalink / raw) To: Paul Slootman; +Cc: linux-kernel, linux-mm On Fri 22-06-12 13:26:14, Paul Slootman wrote: > Perhaps I'm triggering something that exists since before 3.0, but > anyway: > > After some time, all swap space gets gradually used up, without a clear > indication what's using it (at least, I haven't managed to find out). > > System is running debian testing, and most usage is a lot of rxvt > processes mostly ssh'ed out to other systems, and google chrome. > I suspect google chrome may be the cause of the problem. > Root is btrfs, /home is NFS. > > The system earlier had 4GB RAM and swap is currently 5 x 2GB LVM > partitions. With that config I needed to reboot after about a week, as > the system ended up thrashing the swap. I've added 8GB RAM, and now the > uptime is 42 days, system still usable. > > Stopping google-chrome at such a point in time usually does not help. > > At every reboot I upgrade to the latest kernel :) Currently running > 3.4.0-rc6, but I saw the same behaviour with all 3.x kernels I tried. > > Situation now is: > > # free > total used free shared buffers cached > Mem: 12179368 11600220 579148 0 12 9313200 > -/+ buffers/cache: 2287008 9892360 > Swap: 6291444 6238388 53056 > > Swap is now 6GB, as I did a swapoff of 2 swap partitions. > Doing a swapoff of any of the remaining 3 partitions immediately gives: > swapoff failed: Cannot allocate memory > > I would have thought that with almost 10GB memory free (w/o cache) such > a swapoff should succeed. I also wonder why that 9GB cached memory is > being held; it's not released after echo 3 > drop_caches . Because the most of the memory is anonymous and shmem. ipcs -pm should tell you about the current segments and pids behind. [...] > /proc/meminfo > ---------------------------------------------------------------- > MemTotal: 12179368 kB > MemFree: 620712 kB > Buffers: 20 kB > Cached: 9264392 kB > SwapCached: 23644 kB > Active: 1996988 kB > Inactive: 9319588 kB > Active(anon): 1919880 kB > Inactive(anon): 9313300 kB > Active(file): 77108 kB > Inactive(file): 6288 kB > Unevictable: 0 kB > Mlocked: 0 kB > SwapTotal: 6291444 kB > SwapFree: 53056 kB > Dirty: 368 kB > Writeback: 0 kB > AnonPages: 2028736 kB > Mapped: 79584 kB > Shmem: 9181016 kB <<< > Slab: 101360 kB > SReclaimable: 66488 kB > SUnreclaim: 34872 kB > KernelStack: 4336 kB > PageTables: 49176 kB > NFS_Unstable: 0 kB > Bounce: 0 kB > WritebackTmp: 0 kB > CommitLimit: 12381128 kB > Committed_AS: 20465716 kB > VmallocTotal: 34359738367 kB > VmallocUsed: 345912 kB > VmallocChunk: 34359371519 kB > HardwareCorrupted: 0 kB > DirectMap4k: 202372 kB > DirectMap2M: 12249088 kB > ---------------------------------------------------------------- > /proc/slabinfo > ---------------------------------------------------------------- > slabinfo - version: 2.1 > # name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : tunables <limit> <batchcount> <sharedfactor> : slabdata <active_slabs> <num_slabs> <sharedavail> > fat_inode_cache 0 0 664 6 1 : tunables 54 27 8 : slabdata 0 0 0 > fat_cache 0 0 32 112 1 : tunables 120 60 8 : slabdata 0 0 0 > pid_2 214 240 128 30 1 : tunables 120 60 8 : slabdata 8 8 0 > fuse_request 0 0 608 6 1 : tunables 54 27 8 : slabdata 0 0 0 > fuse_inode 0 0 704 11 2 : tunables 54 27 8 : slabdata 0 0 0 > nfsd4_delegations 0 0 368 10 1 : tunables 54 27 8 : slabdata 0 0 0 > nfsd4_stateids 0 0 120 32 1 : tunables 120 60 8 : slabdata 0 0 0 > nfsd4_files 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0 > nfsd4_lockowners 0 0 392 10 1 : tunables 54 27 8 : slabdata 0 0 0 > nfsd4_openowners 0 0 392 10 1 : tunables 54 27 8 : slabdata 0 0 0 > nfs_direct_cache 0 0 136 28 1 : tunables 120 60 8 : slabdata 0 0 0 > nfs_write_data 38 90 832 9 2 : tunables 54 27 8 : slabdata 10 10 0 > nfs_read_data 0 0 768 5 1 : tunables 54 27 8 : slabdata 0 0 0 > nfs_inode_cache 161 256 1000 4 1 : tunables 54 27 8 : slabdata 64 64 0 > nfs_page 92 120 128 30 1 : tunables 120 60 8 : slabdata 4 4 0 > fscache_cookie_jar 9 53 72 53 1 : tunables 120 60 8 : slabdata 1 1 0 > rpc_inode_cache 15 24 640 6 1 : tunables 54 27 8 : slabdata 4 4 0 > rpc_buffers 8 12 2048 2 1 : tunables 24 12 8 : slabdata 5 6 0 > rpc_tasks 9 30 256 15 1 : tunables 120 60 8 : slabdata 2 2 0 > ext2_inode_cache 8 10 744 5 1 : tunables 54 27 8 : slabdata 2 2 0 > ext2_xattr 0 0 88 44 1 : tunables 120 60 8 : slabdata 0 0 0 > sd_ext_cdb 2 112 32 112 1 : tunables 120 60 8 : slabdata 1 1 0 > fib6_nodes 6 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0 > ip6_dst_cache 5 12 320 12 1 : tunables 54 27 8 : slabdata 1 1 0 > ip6_mrt_cache 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0 > RAWv6 14 14 1088 7 2 : tunables 24 12 8 : slabdata 2 2 0 > UDPLITEv6 0 0 1024 4 1 : tunables 54 27 8 : slabdata 0 0 0 > UDPv6 10 12 1024 4 1 : tunables 54 27 8 : slabdata 3 3 0 > tw_sock_TCPv6 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0 > request_sock_TCPv6 0 0 192 20 1 : tunables 120 60 8 : slabdata 0 0 0 > TCPv6 10 12 1856 2 1 : tunables 24 12 8 : slabdata 6 6 0 > flow_cache 0 0 104 37 1 : tunables 120 60 8 : slabdata 0 0 0 > kcopyd_job 0 0 3240 2 2 : tunables 24 12 8 : slabdata 0 0 0 > io 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0 > dm_uevent 0 0 2608 3 2 : tunables 24 12 8 : slabdata 0 0 0 > dm_rq_clone_bio_info 0 0 16 202 1 : tunables 120 60 8 : slabdata 0 0 0 > dm_rq_target_io 0 0 400 10 1 : tunables 54 27 8 : slabdata 0 0 0 > dm_target_io 1853 3312 24 144 1 : tunables 120 60 8 : slabdata 23 23 0 > dm_io 1853 3312 40 92 1 : tunables 120 60 8 : slabdata 36 36 0 > uhci_urb_priv 1 67 56 67 1 : tunables 120 60 8 : slabdata 1 1 0 > scsi_sense_cache 120 120 128 30 1 : tunables 120 60 8 : slabdata 4 4 0 > scsi_cmd_cache 105 105 256 15 1 : tunables 120 60 8 : slabdata 7 7 0 > btree_node 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0 > cfq_io_cq 160 333 104 37 1 : tunables 120 60 8 : slabdata 9 9 0 > cfq_queue 161 306 232 17 1 : tunables 120 60 8 : slabdata 18 18 0 > bsg_cmd 0 0 312 12 1 : tunables 54 27 8 : slabdata 0 0 0 > mqueue_inode_cache 1 4 896 4 1 : tunables 54 27 8 : slabdata 1 1 0 > delayed_node 525 2899 288 13 1 : tunables 54 27 8 : slabdata 223 223 0 > extent_map 38088 49160 96 40 1 : tunables 120 60 8 : slabdata 1229 1229 0 > extent_buffers 314 396 344 11 1 : tunables 54 27 8 : slabdata 36 36 0 > extent_state 2674 13022 112 34 1 : tunables 120 60 8 : slabdata 383 383 0 > btrfs_free_space_cache 7574 8024 64 59 1 : tunables 120 60 8 : slabdata 136 136 0 > btrfs_path_cache 10 27 144 27 1 : tunables 120 60 8 : slabdata 1 1 0 > btrfs_transaction_cache 1 13 296 13 1 : tunables 54 27 8 : slabdata 1 1 0 > btrfs_trans_handle_cache 12 48 80 48 1 : tunables 120 60 8 : slabdata 1 1 0 > btrfs_inode_cache 750 1480 984 4 1 : tunables 54 27 8 : slabdata 370 370 0 > jbd2_transaction_s 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0 > jbd2_inode 0 0 48 77 1 : tunables 120 60 8 : slabdata 0 0 0 > jbd2_journal_handle 0 0 24 144 1 : tunables 120 60 8 : slabdata 0 0 0 > jbd2_journal_head 0 0 112 34 1 : tunables 120 60 8 : slabdata 0 0 0 > jbd2_revoke_table_s 0 0 16 202 1 : tunables 120 60 8 : slabdata 0 0 0 > jbd2_revoke_record_s 0 0 32 112 1 : tunables 120 60 8 : slabdata 0 0 0 > ext4_inode_cache 0 0 872 4 1 : tunables 54 27 8 : slabdata 0 0 0 > ext4_xattr 0 0 88 44 1 : tunables 120 60 8 : slabdata 0 0 0 > ext4_free_data 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0 > ext4_allocation_context 0 0 136 28 1 : tunables 120 60 8 : slabdata 0 0 0 > ext4_prealloc_space 0 0 104 37 1 : tunables 120 60 8 : slabdata 0 0 0 > ext4_system_zone 0 0 40 92 1 : tunables 120 60 8 : slabdata 0 0 0 > ext4_io_end 0 0 1128 3 1 : tunables 24 12 8 : slabdata 0 0 0 > ext4_io_page 0 0 16 202 1 : tunables 120 60 8 : slabdata 0 0 0 > dquot 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0 > kioctx 0 0 384 10 1 : tunables 54 27 8 : slabdata 0 0 0 > kiocb 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0 > fanotify_response_event 0 0 32 112 1 : tunables 120 60 8 : slabdata 0 0 0 > fsnotify_mark 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0 > inotify_event_private_data 3 112 32 112 1 : tunables 120 60 8 : slabdata 1 1 0 > inotify_inode_mark 73 84 136 28 1 : tunables 120 60 8 : slabdata 3 3 0 > dnotify_mark 4 28 136 28 1 : tunables 120 60 8 : slabdata 1 1 0 > dnotify_struct 4 112 32 112 1 : tunables 120 60 8 : slabdata 1 1 0 > dio 0 0 640 6 1 : tunables 54 27 8 : slabdata 0 0 0 > fasync_cache 4 77 48 77 1 : tunables 120 60 8 : slabdata 1 1 0 > pid_namespace 1 3 2128 3 2 : tunables 24 12 8 : slabdata 1 1 0 > user_namespace 0 0 1072 7 2 : tunables 24 12 8 : slabdata 0 0 0 > posix_timers_cache 1 27 144 27 1 : tunables 120 60 8 : slabdata 1 1 0 > uid_cache 7 60 128 30 1 : tunables 120 60 8 : slabdata 2 2 0 > UNIX 531 540 832 9 2 : tunables 54 27 8 : slabdata 60 60 0 > ip_mrt_cache 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0 > UDP-Lite 0 0 896 4 1 : tunables 54 27 8 : slabdata 0 0 0 > tcp_bind_bucket 48 177 64 59 1 : tunables 120 60 8 : slabdata 3 3 0 > inet_peer_cache 49 160 192 20 1 : tunables 120 60 8 : slabdata 8 8 0 > secpath_cache 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0 > xfrm_dst_cache 0 0 448 8 1 : tunables 54 27 8 : slabdata 0 0 0 > ip_fib_trie 9 67 56 67 1 : tunables 120 60 8 : slabdata 1 1 0 > ip_fib_alias 10 77 48 77 1 : tunables 120 60 8 : slabdata 1 1 0 > ip_dst_cache 139 285 256 15 1 : tunables 120 60 8 : slabdata 19 19 0 > PING 0 0 832 9 2 : tunables 54 27 8 : slabdata 0 0 0 > RAW 11 18 832 9 2 : tunables 54 27 8 : slabdata 2 2 0 > UDP 11 20 896 4 1 : tunables 54 27 8 : slabdata 5 5 0 > tw_sock_TCP 1 20 192 20 1 : tunables 120 60 8 : slabdata 1 1 0 > request_sock_TCP 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0 > TCP 45 56 1664 4 2 : tunables 24 12 8 : slabdata 14 14 0 > eventpoll_pwq 289 424 72 53 1 : tunables 120 60 8 : slabdata 8 8 0 > eventpoll_epi 269 360 128 30 1 : tunables 120 60 8 : slabdata 12 12 0 > sgpool-128 2 2 4096 1 1 : tunables 24 12 8 : slabdata 2 2 0 > sgpool-64 2 2 2048 2 1 : tunables 24 12 8 : slabdata 1 1 0 > sgpool-32 2 4 1024 4 1 : tunables 54 27 8 : slabdata 1 1 0 > sgpool-16 3 8 512 8 1 : tunables 54 27 8 : slabdata 1 1 0 > sgpool-8 135 135 256 15 1 : tunables 120 60 8 : slabdata 9 9 0 > scsi_data_buffer 0 0 24 144 1 : tunables 120 60 8 : slabdata 0 0 0 > blkdev_queue 17 20 1784 4 2 : tunables 24 12 8 : slabdata 5 5 0 > blkdev_requests 64 132 360 11 1 : tunables 54 27 8 : slabdata 12 12 2 > blkdev_ioc 162 320 96 40 1 : tunables 120 60 8 : slabdata 8 8 0 > fsnotify_event_holder 0 0 24 144 1 : tunables 120 60 8 : slabdata 0 0 0 > fsnotify_event 4 34 112 34 1 : tunables 120 60 8 : slabdata 1 1 0 > bio-0 178 840 192 20 1 : tunables 120 60 8 : slabdata 42 42 0 > biovec-256 164 185 4096 1 1 : tunables 24 12 8 : slabdata 164 185 32 > biovec-128 0 0 2048 2 1 : tunables 24 12 8 : slabdata 0 0 0 > biovec-64 0 0 1024 4 1 : tunables 54 27 8 : slabdata 0 0 0 > biovec-16 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0 > sock_inode_cache 625 792 640 6 1 : tunables 54 27 8 : slabdata 132 132 0 > skbuff_fclone_cache 5 14 512 7 1 : tunables 54 27 8 : slabdata 2 2 0 > skbuff_head_cache 414 630 256 15 1 : tunables 120 60 8 : slabdata 42 42 0 > file_lock_cache 14 40 192 20 1 : tunables 120 60 8 : slabdata 2 2 0 > net_namespace 1 3 2624 3 2 : tunables 24 12 8 : slabdata 1 1 0 > shmem_inode_cache 4441 4788 616 6 1 : tunables 54 27 8 : slabdata 798 798 0 > Acpi-Operand 1411 1484 72 53 1 : tunables 120 60 8 : slabdata 28 28 0 > Acpi-ParseExt 0 0 72 53 1 : tunables 120 60 8 : slabdata 0 0 0 > Acpi-Parse 0 0 48 77 1 : tunables 120 60 8 : slabdata 0 0 0 > Acpi-State 0 0 80 48 1 : tunables 120 60 8 : slabdata 0 0 0 > Acpi-Namespace 939 1012 40 92 1 : tunables 120 60 8 : slabdata 11 11 0 > task_delay_info 561 680 112 34 1 : tunables 120 60 8 : slabdata 20 20 0 > taskstats 5 24 328 12 1 : tunables 54 27 8 : slabdata 2 2 0 > proc_inode_cache 843 852 616 6 1 : tunables 54 27 8 : slabdata 142 142 0 > sigqueue 37 48 160 24 1 : tunables 120 60 8 : slabdata 2 2 0 > bdev_cache 21 24 832 4 1 : tunables 54 27 8 : slabdata 6 6 0 > sysfs_dir_cache 13150 13430 112 34 1 : tunables 120 60 8 : slabdata 395 395 0 > mnt_cache 31 45 256 15 1 : tunables 120 60 8 : slabdata 3 3 0 > filp 8472 9870 256 15 1 : tunables 120 60 8 : slabdata 658 658 480 > inode_cache 1015 1183 552 7 1 : tunables 54 27 8 : slabdata 169 169 0 > dentry 8267 45240 192 20 1 : tunables 120 60 8 : slabdata 2262 2262 60 > names_cache 12 12 4096 1 1 : tunables 24 12 8 : slabdata 12 12 0 > key_jar 2 20 192 20 1 : tunables 120 60 8 : slabdata 1 1 0 > buffer_head 14 111 104 37 1 : tunables 120 60 8 : slabdata 3 3 0 > nsproxy 2 77 48 77 1 : tunables 120 60 8 : slabdata 1 1 0 > vm_area_struct 31533 31970 168 23 1 : tunables 120 60 8 : slabdata 1390 1390 0 > mm_struct 176 176 896 4 1 : tunables 54 27 8 : slabdata 44 44 0 > fs_cache 181 295 64 59 1 : tunables 120 60 8 : slabdata 5 5 0 > files_cache 181 209 704 11 2 : tunables 54 27 8 : slabdata 19 19 0 > signal_cache 267 272 1024 4 1 : tunables 54 27 8 : slabdata 68 68 0 > sighand_cache 261 261 2112 3 2 : tunables 24 12 8 : slabdata 87 87 0 > task_xstate 469 469 576 7 1 : tunables 54 27 8 : slabdata 67 67 0 > task_struct 555 555 1584 5 2 : tunables 24 12 8 : slabdata 111 111 0 > cred_jar 515 800 192 20 1 : tunables 120 60 8 : slabdata 40 40 0 > anon_vma_chain 31154 31878 48 77 1 : tunables 120 60 8 : slabdata 414 414 0 > anon_vma 14119 14455 64 59 1 : tunables 120 60 8 : slabdata 245 245 0 > pid 388 570 128 30 1 : tunables 120 60 8 : slabdata 19 19 0 > radix_tree_node 63906 80227 560 7 1 : tunables 54 27 8 : slabdata 11461 11461 0 > idr_layer_cache 562 595 544 7 1 : tunables 54 27 8 : slabdata 85 85 0 > size-4194304(DMA) 0 0 4194304 1 1024 : tunables 1 1 0 : slabdata 0 0 0 > size-4194304 0 0 4194304 1 1024 : tunables 1 1 0 : slabdata 0 0 0 > size-2097152(DMA) 0 0 2097152 1 512 : tunables 1 1 0 : slabdata 0 0 0 > size-2097152 0 0 2097152 1 512 : tunables 1 1 0 : slabdata 0 0 0 > size-1048576(DMA) 0 0 1048576 1 256 : tunables 1 1 0 : slabdata 0 0 0 > size-1048576 0 0 1048576 1 256 : tunables 1 1 0 : slabdata 0 0 0 > size-524288(DMA) 0 0 524288 1 128 : tunables 1 1 0 : slabdata 0 0 0 > size-524288 0 0 524288 1 128 : tunables 1 1 0 : slabdata 0 0 0 > size-262144(DMA) 0 0 262144 1 64 : tunables 1 1 0 : slabdata 0 0 0 > size-262144 0 0 262144 1 64 : tunables 1 1 0 : slabdata 0 0 0 > size-131072(DMA) 0 0 131072 1 32 : tunables 8 4 0 : slabdata 0 0 0 > size-131072 0 0 131072 1 32 : tunables 8 4 0 : slabdata 0 0 0 > size-65536(DMA) 0 0 65536 1 16 : tunables 8 4 0 : slabdata 0 0 0 > size-65536 11 11 65536 1 16 : tunables 8 4 0 : slabdata 11 11 0 > size-32768(DMA) 0 0 32768 1 8 : tunables 8 4 0 : slabdata 0 0 0 > size-32768 1 1 32768 1 8 : tunables 8 4 0 : slabdata 1 1 0 > size-16384(DMA) 0 0 16384 1 4 : tunables 8 4 0 : slabdata 0 0 0 > size-16384 12 12 16384 1 4 : tunables 8 4 0 : slabdata 12 12 0 > size-8192(DMA) 0 0 8192 1 2 : tunables 8 4 0 : slabdata 0 0 0 > size-8192 27 27 8192 1 2 : tunables 8 4 0 : slabdata 27 27 0 > size-4096(DMA) 0 0 4096 1 1 : tunables 24 12 8 : slabdata 0 0 0 > size-4096 453 453 4096 1 1 : tunables 24 12 8 : slabdata 453 453 0 > size-2048(DMA) 0 0 2048 2 1 : tunables 24 12 8 : slabdata 0 0 0 > size-2048 684 708 2048 2 1 : tunables 24 12 8 : slabdata 354 354 0 > size-1024(DMA) 0 0 1024 4 1 : tunables 54 27 8 : slabdata 0 0 0 > size-1024 1427 1460 1024 4 1 : tunables 54 27 8 : slabdata 365 365 0 > size-512(DMA) 0 0 512 8 1 : tunables 54 27 8 : slabdata 0 0 0 > size-512 4018 4376 512 8 1 : tunables 54 27 8 : slabdata 547 547 0 > size-256(DMA) 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0 > size-256 579 660 256 15 1 : tunables 120 60 8 : slabdata 44 44 0 > size-192(DMA) 0 0 192 20 1 : tunables 120 60 8 : slabdata 0 0 0 > size-192 1532 1780 192 20 1 : tunables 120 60 8 : slabdata 89 89 0 > size-128(DMA) 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0 > size-64(DMA) 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0 > size-64 7338 33571 64 59 1 : tunables 120 60 8 : slabdata 569 569 30 > size-32(DMA) 0 0 32 112 1 : tunables 120 60 8 : slabdata 0 0 0 > size-128 7966 11160 128 30 1 : tunables 120 60 8 : slabdata 372 372 0 > size-32 8063 18368 32 112 1 : tunables 120 60 8 : slabdata 164 164 0 > kmem_cache 196 200 192 20 1 : tunables 120 60 8 : slabdata 10 10 0 > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: memory leak in recent (3.x) kernels? 2012-06-28 15:22 ` memory leak in recent (3.x) kernels? Michal Hocko @ 2012-06-28 17:20 ` Paul Slootman 0 siblings, 0 replies; 2+ messages in thread From: Paul Slootman @ 2012-06-28 17:20 UTC (permalink / raw) To: Michal Hocko; +Cc: linux-kernel, linux-mm On Thu 28 Jun 2012, Michal Hocko wrote: > On Fri 22-06-12 13:26:14, Paul Slootman wrote: > > Perhaps I'm triggering something that exists since before 3.0, but > > anyway: > > > > After some time, all swap space gets gradually used up, without a clear > > indication what's using it (at least, I haven't managed to find out). > > > > System is running debian testing, and most usage is a lot of rxvt > > processes mostly ssh'ed out to other systems, and google chrome. > > I suspect google chrome may be the cause of the problem. > > Root is btrfs, /home is NFS. > > > > The system earlier had 4GB RAM and swap is currently 5 x 2GB LVM > > partitions. With that config I needed to reboot after about a week, as > > the system ended up thrashing the swap. I've added 8GB RAM, and now the > > uptime is 42 days, system still usable. > > > > Stopping google-chrome at such a point in time usually does not help. > > > > At every reboot I upgrade to the latest kernel :) Currently running > > 3.4.0-rc6, but I saw the same behaviour with all 3.x kernels I tried. Memory was full again yesterday, at which point I tried 3.5.0-rc4. Unfortunately something there (or something I may have changed in the config) prevents my google chrome from starting all of my open tabs; about 1/3 remain blank with a loading spinner running. Opening a new tab and entering one of those URLs gives "window not responding" error after some time. Wierd. > > I would have thought that with almost 10GB memory free (w/o cache) such > > a swapoff should succeed. I also wonder why that 9GB cached memory is > > being held; it's not released after echo 3 > drop_caches . > > Shmem: 9181016 kB <<< > Because the most of the memory is anonymous and shmem. > ipcs -pm should tell you about the current segments and pids behind. OK, I'll do that the next time, thanks. I hadn't noticed the Shmem line (I didn't really know where to begin looking :-) I find it a bit unexpected that this is shown by "free" as cached memory. I did notice however, that after restarting the X server the memory apparently _was_ released (stopping all the windows didn't seem to help). Paul -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2012-06-28 17:20 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <20120622112614.GA17413@msgid.wurtel.net>
2012-06-28 15:22 ` memory leak in recent (3.x) kernels? Michal Hocko
2012-06-28 17:20 ` Paul Slootman
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox