-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Andrey,
On 10/12/12 11:30 AM, Andrey Timofeyev wrote: > Hi, everybody, > > There is followen problem with tomcat 7.0.29 (With tomcat 6.0.18 > there is no such problem): > > Any other services on the same machine lost connections with > remote services, when number of incoming connections to tomcat > reach pollerSize. (It seems that all file descriptors is used or > something else) > > As I see in the tomcat 7 latch was added in AprEndpoint, and if > connections reach maxLimit Acceptor locked on the latch. > > Here is server configuration: Linux 2.6.34.6-uni-02 #1 SMP Mon Sep > 19 17:13:09 MSD 2011 x86_64 x86_64 x86_64 GNU/Linux APR: > libapr1-1.4.6-3.8 kernel.panic = 20 > net.ipv4.conf.all.accept_redirects = 0 > net.ipv4.conf.default.accept_redirects = 0 > net.ipv4.conf.all.rp_filter = 0 net.ipv4.conf.default.rp_filter = > 0 net.ipv4.icmp_echo_ignore_broadcasts = 1 vm.min_free_kbytes = > 65536 vm.swappiness = 0 net.core.optmem_max = 16777216 > net.core.rmem_max = 16777216 net.core.rmem_default = 16777216 > net.core.wmem_max = 16777216 net.core.wmem_default = 16777216 > net.ipv4.tcp_rmem = 4096 16777216 16777216 net.ipv4.tcp_wmem = 4096 > 16777216 16777216 net.core.netdev_max_backlog = 300000 > net.core.somaxconn = 65536 net.ipv4.tcp_max_orphans = 262144 > net.ipv4.tcp_max_syn_backlog = 65536 net.ipv4.tcp_max_tw_buckets = > 1048576 net.ipv4.tcp_sack = 1 net.ipv4.tcp_synack_retries = 3 > net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syn_retries = 3 > net.ipv4.tcp_timestamps = 1 net.ipv4.tcp_window_scaling = 1 > net.ipv4.conf.all.arp_filter = 1 net.ipv4.conf.default.arp_filter = > 1 net.ipv4.conf.all.arp_ignore = 1 net.ipv4.conf.default.arp_ignore > = 1 net.ipv4.conf.all.arp_announce = 2 > net.ipv4.conf.default.arp_announce = 2 > net.ipv4.neigh.default.gc_thresh1 = 2048 > net.ipv4.neigh.default.gc_thresh2 = 4096 > net.ipv4.neigh.default.gc_thresh3 = 8192 > > Is it tomcat issue or some misconfiguration? What about your Tomcat configuration? Do you get exceptions or apparent deadlock? Can you generate a thread dump? Are your client connections long-lived? How long? What does 'ulimit -n' tell you? - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlB4PB4ACgkQ9CaO5/Lv0PB6owCfdKmTMEEiaZrlEOWwDSn8Zdic P7MAn0dmd8U6FJMZvWEg89o8wWEuCqJV =rdPD -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
