Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264508AbUADVbp (ORCPT ); Sun, 4 Jan 2004 16:31:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264535AbUADVbp (ORCPT ); Sun, 4 Jan 2004 16:31:45 -0500 Received: from scrat.hensema.net ([62.212.82.150]:45190 "EHLO scrat.hensema.net") by vger.kernel.org with ESMTP id S264508AbUADVbe (ORCPT ); Sun, 4 Jan 2004 16:31:34 -0500 From: Erik Hensema Subject: Re: 2.6.0: something is leaking memory Date: Sun, 4 Jan 2004 21:31:26 +0000 (UTC) Message-ID: References: Reply-To: erik@hensema.net User-Agent: slrn/0.9.7.3 (Linux) To: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 24410 Lines: 269 Linus Torvalds (torvalds@osdl.org) wrote: > > > On Sun, 4 Jan 2004, Erik Hensema wrote: >> >> The leak can be most easily seen in my rrdtool graphs of memory >> usage: http://dexter.hensema.net/~erik/stats/mem-mon.gif and >> http://dexter.hensema.net/~erik/stats/mem-year.gif - try to guess >> when I switched to 2.6.0-test11 ;-) >> >> At Dec 31 I upgraded to 2.6.0-final. >> >> Output from ps aux, /proc/vmstat and /proc/meminfo, are attached. >> My .config isn't compiled in and I haven't got it at hand >> currently. If anyone is interested I can post it tomorrow. > > Can you do /proc/slabinfo too? Sure, this is of course my currently running system, 4 days, 9:53 uptime. slabinfo - version: 2.0 # name : tunables : slabdata ip_conntrack 66 156 320 12 1 : tunables 54 27 0 : slabdata 13 13 0 ip_fib_hash 30 202 16 202 1 : tunables 120 60 0 : slabdata 1 1 0 rpc_buffers 8 8 2048 2 1 : tunables 24 12 0 : slabdata 4 4 0 rpc_tasks 8 20 192 20 1 : tunables 120 60 0 : slabdata 1 1 0 rpc_inode_cache 0 0 384 10 1 : tunables 54 27 0 : slabdata 0 0 0 fib6_nodes 42 112 32 112 1 : tunables 120 60 0 : slabdata 1 1 0 ip6_dst_cache 38 60 256 15 1 : tunables 120 60 0 : slabdata 4 4 0 ndisc_cache 10 20 192 20 1 : tunables 120 60 0 : slabdata 1 1 0 raw6_sock 0 0 640 6 1 : tunables 54 27 0 : slabdata 0 0 0 udp6_sock 2 6 640 6 1 : tunables 54 27 0 : slabdata 1 1 0 tcp6_sock 19729 19732 1024 4 1 : tunables 54 27 0 : slabdata 4933 4933 0 unix_sock 42 50 384 10 1 : tunables 54 27 0 : slabdata 5 5 0 tcp_tw_bucket 5 30 128 30 1 : tunables 120 60 0 : slabdata 1 1 0 tcp_bind_bucket 107 202 16 202 1 : tunables 120 60 0 : slabdata 1 1 0 tcp_open_request 0 0 128 30 1 : tunables 120 60 0 : slabdata 0 0 0 inet_peer_cache 10 59 64 59 1 : tunables 120 60 0 : slabdata 1 1 0 secpath_cache 0 0 128 30 1 : tunables 120 60 0 : slabdata 0 0 0 xfrm_dst_cache 0 0 256 15 1 : tunables 120 60 0 : slabdata 0 0 0 ip_dst_cache 259 300 256 15 1 : tunables 120 60 0 : slabdata 20 20 0 arp_cache 4 30 128 30 1 : tunables 120 60 0 : slabdata 1 1 0 raw4_sock 0 0 512 7 1 : tunables 54 27 0 : slabdata 0 0 0 udp_sock 14 14 512 7 1 : tunables 54 27 0 : slabdata 2 2 0 tcp_sock 35 36 896 4 1 : tunables 54 27 0 : slabdata 9 9 0 flow_cache 0 0 128 30 1 : tunables 120 60 0 : slabdata 0 0 0 dm_io 784 1010 16 202 1 : tunables 120 60 0 : slabdata 5 5 0 reiser_inode_cache 3090 11050 384 10 1 : tunables 54 27 0 : slabdata 1105 1105 0 nfs_write_data 36 36 448 9 1 : tunables 54 27 0 : slabdata 4 4 0 nfs_read_data 32 36 448 9 1 : tunables 54 27 0 : slabdata 4 4 0 nfs_inode_cache 0 0 640 6 1 : tunables 54 27 0 : slabdata 0 0 0 nfs_page 0 0 128 30 1 : tunables 120 60 0 : slabdata 0 0 0 ext2_inode_cache 1 9 448 9 1 : tunables 54 27 0 : slabdata 1 1 0 eventpoll_pwq 0 0 36 101 1 : tunables 120 60 0 : slabdata 0 0 0 eventpoll_epi 0 0 128 30 1 : tunables 120 60 0 : slabdata 0 0 0 kioctx 0 0 192 20 1 : tunables 120 60 0 : slabdata 0 0 0 kiocb 0 0 192 20 1 : tunables 120 60 0 : slabdata 0 0 0 dnotify_cache 0 0 20 169 1 : tunables 120 60 0 : slabdata 0 0 0 file_lock_cache 9 42 92 42 1 : tunables 120 60 0 : slabdata 1 1 0 fasync_cache 0 0 16 202 1 : tunables 120 60 0 : slabdata 0 0 0 shmem_inode_cache 8 9 448 9 1 : tunables 54 27 0 : slabdata 1 1 0 idr_layer_cache 0 0 136 28 1 : tunables 120 60 0 : slabdata 0 0 0 posix_timers_cache 0 0 80 48 1 : tunables 120 60 0 : slabdata 0 0 0 uid_cache 10 112 32 112 1 : tunables 120 60 0 : slabdata 1 1 0 deadline_drq 0 0 52 72 1 : tunables 120 60 0 : slabdata 0 0 0 as_arq 21 118 64 59 1 : tunables 120 60 0 : slabdata 2 2 0 blkdev_requests 21 72 160 24 1 : tunables 120 60 0 : slabdata 3 3 0 biovec-BIO_MAX_PAGES 256 260 3072 5 4 : tunables 24 12 0 : slabdata 52 52 0 biovec-128 256 260 1536 5 2 : tunables 24 12 0 : slabdata 52 52 0 biovec-64 256 260 768 5 1 : tunables 54 27 0 : slabdata 52 52 0 biovec-16 256 260 192 20 1 : tunables 120 60 0 : slabdata 13 13 0 biovec-4 258 295 64 59 1 : tunables 120 60 0 : slabdata 5 5 0 biovec-1 300 606 16 202 1 : tunables 120 60 0 : slabdata 3 3 0 bio 273 413 64 59 1 : tunables 120 60 0 : slabdata 7 7 0 sock_inode_cache 208 230 384 10 1 : tunables 54 27 0 : slabdata 23 23 0 skbuff_head_cache 300 360 192 20 1 : tunables 120 60 0 : slabdata 18 18 0 sock 7 12 320 12 1 : tunables 54 27 0 : slabdata 1 1 0 proc_inode_cache 980 980 384 10 1 : tunables 54 27 0 : slabdata 98 98 0 sigqueue 16 27 144 27 1 : tunables 120 60 0 : slabdata 1 1 0 radix_tree_node 2680 2925 260 15 1 : tunables 54 27 0 : slabdata 195 195 0 bdev_cache 9 9 448 9 1 : tunables 54 27 0 : slabdata 1 1 0 mnt_cache 17 59 64 59 1 : tunables 120 60 0 : slabdata 1 1 0 inode_cache 917 930 384 10 1 : tunables 54 27 0 : slabdata 93 93 0 dentry_cache 7348 20240 192 20 1 : tunables 120 60 0 : slabdata 1012 1012 0 filp 1048 1290 128 30 1 : tunables 120 60 0 : slabdata 43 43 0 names_cache 6 6 4096 1 1 : tunables 24 12 0 : slabdata 6 6 0 buffer_head 28856 35064 52 72 1 : tunables 120 60 0 : slabdata 487 487 0 mm_struct 58 70 512 7 1 : tunables 54 27 0 : slabdata 10 10 0 vm_area_struct 2337 2832 64 59 1 : tunables 120 60 0 : slabdata 48 48 0 fs_cache 66 112 32 112 1 : tunables 120 60 0 : slabdata 1 1 0 files_cache 58 72 448 9 1 : tunables 54 27 0 : slabdata 8 8 0 signal_cache 124 177 64 59 1 : tunables 120 60 0 : slabdata 3 3 0 sighand_cache 73 81 1344 3 1 : tunables 24 12 0 : slabdata 27 27 0 task_struct 129 140 1568 5 2 : tunables 24 12 0 : slabdata 28 28 0 pte_chain 9102 10679 64 59 1 : tunables 120 60 0 : slabdata 181 181 0 pgd 58 58 4096 1 1 : tunables 24 12 0 : slabdata 58 58 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 0 0 65536 1 16 : tunables 8 4 0 : slabdata 0 0 0 size-32768(DMA) 0 0 32768 1 8 : tunables 8 4 0 : slabdata 0 0 0 size-32768 0 0 32768 1 8 : tunables 8 4 0 : slabdata 0 0 0 size-16384(DMA) 0 0 16384 1 4 : tunables 8 4 0 : slabdata 0 0 0 size-16384 0 0 16384 1 4 : tunables 8 4 0 : slabdata 0 0 0 size-8192(DMA) 0 0 8192 1 2 : tunables 8 4 0 : slabdata 0 0 0 size-8192 131 131 8192 1 2 : tunables 8 4 0 : slabdata 131 131 0 size-4096(DMA) 0 0 4096 1 1 : tunables 24 12 0 : slabdata 0 0 0 size-4096 120 120 4096 1 1 : tunables 24 12 0 : slabdata 120 120 0 size-2048(DMA) 0 0 2048 2 1 : tunables 24 12 0 : slabdata 0 0 0 size-2048 160 174 2048 2 1 : tunables 24 12 0 : slabdata 87 87 0 size-1024(DMA) 0 0 1024 4 1 : tunables 54 27 0 : slabdata 0 0 0 size-1024 109 128 1024 4 1 : tunables 54 27 0 : slabdata 32 32 0 size-512(DMA) 0 0 512 8 1 : tunables 54 27 0 : slabdata 0 0 0 size-512 288 288 512 8 1 : tunables 54 27 0 : slabdata 36 36 0 size-256(DMA) 0 0 256 15 1 : tunables 120 60 0 : slabdata 0 0 0 size-256 394 660 256 15 1 : tunables 120 60 0 : slabdata 44 44 0 size-192(DMA) 0 0 192 20 1 : tunables 120 60 0 : slabdata 0 0 0 size-192 32 40 192 20 1 : tunables 120 60 0 : slabdata 2 2 0 size-128(DMA) 0 0 128 30 1 : tunables 120 60 0 : slabdata 0 0 0 size-128 2675 2730 128 30 1 : tunables 120 60 0 : slabdata 91 91 0 size-64(DMA) 0 0 64 59 1 : tunables 120 60 0 : slabdata 0 0 0 size-64 5724 5782 64 59 1 : tunables 120 60 0 : slabdata 98 98 0 size-32(DMA) 0 0 32 112 1 : tunables 120 60 0 : slabdata 0 0 0 size-32 820 896 32 112 1 : tunables 120 60 0 : slabdata 8 8 0 kmem_cache 132 132 116 33 1 : tunables 120 60 0 : slabdata 4 4 0 > Clearly the memory leak isn't in the page cache, so the most likely source > is network buffers, and most likely in iptables connection tracking or > similar. If you actually _use_ IPv6, then that is also more likely to have > leaks just due to less testing. I do use IPv6. I've got three active tunnels and native IPv6 over ethernet. I've always had problems with nscd leaking filedescriptors, all IPv6 connections to my LDAP server. This started after upgrading suse 8.0 to 8.2 (I think the problem is in nss_ldap). I'm restarting nscd using a cronjob every night now. Output of netstat --inet6 -avpn is below. All sockets in CLOSE_WAIT are leaked and will go away after a nscd restart. > David & co fixed a number of leaks just before 2.6.0-final, but that > doesn't mean that they are all gone - rather it means that there > definitely were still leaks around just a few weeks ago. The server isn't very critical, but I do need it. I'm willing to try some patches (or do an upgrade to -mm), but nothing to wild. netstat --inet6 -avpn Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 :::22 :::* LISTEN 1208/sshd tcp 0 0 :::119 :::* LISTEN 1364/innd tcp 0 0 :::25 :::* LISTEN 1433/sendmail: acce tcp 0 0 :::953 :::* LISTEN 1175/named tcp 0 0 ::1:6010 :::* LISTEN 19900/sshd tcp 0 0 ::1:6011 :::* LISTEN 20150/sshd tcp 1 0 ::1:50565 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:50224 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 2001:888:10a1::1:389 ::1:55936 ESTABLISHED 1145/slapd tcp 1 0 ::1:50343 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:50988 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51181 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51187 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51186 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:50768 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:50774 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:50772 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:50788 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:50816 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49454 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49460 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49458 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49470 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49619 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49645 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49644 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49643 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:49592 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:32776 2001:888:10a1::1:389 CLOSE_WAIT 1510/httpd tcp 1 0 ::1:32806 2001:888:10a1::1:389 CLOSE_WAIT 1777/SCREEN tcp 0 0 192.168.1.1:119 192.168.1.1:56197 ESTABLISHED 20135/- nnrpd: dext tcp 1 0 ::1:32862 2001:888:10a1::1:389 CLOSE_WAIT 2726/httpd tcp 1 0 ::1:49291 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 2001:888:10a1::1:389 ::1:55527 ESTABLISHED 1145/slapd tcp 0 0 212.120.97.185:119 62.212.82.150:58902 ESTABLISHED 1364/innd tcp 1 0 ::1:52711 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:52263 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 2001:888:10a1::1:389 ::1:56203 ESTABLISHED 1145/slapd tcp 1 0 ::1:52823 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:52839 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:52876 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:52888 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51563 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51460 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51201 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51420 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51423 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:51417 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 2001:888:10a1::1:389 ::1:56204 ESTABLISHED 1145/slapd tcp 1 0 ::1:52182 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 2001:888:10a1::1:389 ::1:56207 ESTABLISHED 1145/slapd tcp 0 0 2001:888:10a1::1:389 ::1:56206 ESTABLISHED 1145/slapd tcp 1 0 ::1:54612 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54628 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54366 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54389 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54370 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54372 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 2001:888:10a1::1:389 ::1:56179 ESTABLISHED 1145/slapd tcp 1 0 ::1:47004 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:47069 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 48 212.120.97.185:22 213.84.242.133:55760 ESTABLISHED 20146/sshd tcp 1 0 ::1:53575 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53571 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53577 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53722 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53661 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53695 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53347 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53447 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54103 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54087 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54088 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54127 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:54047 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 212.120.97.185:22 213.84.242.133:55733 ESTABLISHED 19807/sshd tcp 1 0 ::1:53828 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53867 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53809 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53974 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:53948 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:48465 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:48619 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:48233 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:48381 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:48658 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 1 0 ::1:48878 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 2001:888:10a1::1:389 ::1:56250 ESTABLISHED 1145/slapd tcp 1 0 ::1:47368 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 2001:888:10a1::1:389 ::1:56188 ESTABLISHED 1145/slapd tcp 0 0 ::1:55527 2001:888:10a1::1:389 ESTABLISHED 26536/nscd tcp 0 0 212.120.97.185:119 131.211.28.48:47677 ESTABLISHED 1364/innd tcp 0 0 ::1:56190 2001:888:10a1::1:389 ESTABLISHED 19900/sshd tcp 0 0 ::1:56188 2001:888:10a1::1:389 ESTABLISHED 19807/sshd tcp 0 0 ::1:56179 2001:888:10a1::1:389 ESTABLISHED 19807/sshd tcp 0 0 ::1:56207 2001:888:10a1::1:389 ESTABLISHED 26536/nscd tcp 0 0 ::1:56206 2001:888:10a1::1:389 ESTABLISHED 20150/sshd tcp 0 0 ::1:56204 2001:888:10a1::1:389 ESTABLISHED 20146/sshd tcp 0 0 ::1:56203 2001:888:10a1::1:389 ESTABLISHED 20146/sshd tcp 0 0 ::1:56250 2001:888:10a1::1:389 ESTABLISHED 20670/su tcp 0 0 ::1:56249 2001:888:10a1::1:389 TIME_WAIT - tcp 0 0 ::1:56248 2001:888:10a1::1:389 TIME_WAIT - tcp 0 0 2001:888:10a1::1:389 ::1:56190 ESTABLISHED 1145/slapd tcp 1 0 ::1:47765 2001:888:10a1::1:389 CLOSE_WAIT 26536/nscd tcp 0 0 ::1:55936 2001:888:10a1::1:389 ESTABLISHED 26536/nscd udp 0 0 :::514 :::* 688/syslogd udp 0 0 :::32772 :::* 1175/named udp 0 0 :::53 :::* 1175/named raw 0 0 :::58 :::* 7 916/zebra -- Erik Hensema - 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/