Where can I get more informations about the mentioned IRC Server or the
File Descriptor" hard limit in the kernel ??
here are my current sysctl settings:
sunrpc.nlm_debug = 0
sunrpc.nfsd_debug = 0
sunrpc.nfs_debug = 0
sunrpc.rpc_debug = 0
abi.fake_utsname = 0
abi.trace = 0
abi.defhandler_libcso = 68157441
abi.defhandler_lcall7 = 68157441
abi.defhandler_elf = 0
abi.defhandler_coff = 117440515
dev.raid.speed_limit_max = 100000
dev.raid.speed_limit_min = 100
dev.rtc.max-user-freq = 64
net.ipv6.conf.default.max_desync_factor = 600
net.ipv6.conf.default.regen_max_retry = 5
net.ipv6.conf.default.temp_prefered_lft = 86400
net.ipv6.conf.default.temp_valid_lft = 604800
net.ipv6.conf.default.use_tempaddr = 0
net.ipv6.conf.default.router_solicitation_delay = 1
net.ipv6.conf.default.router_solicitation_interval = 4
net.ipv6.conf.default.router_solicitations = 3
net.ipv6.conf.default.dad_transmits = 1
net.ipv6.conf.default.autoconf = 1
net.ipv6.conf.default.accept_redirects = 1
net.ipv6.conf.default.accept_ra = 1
net.ipv6.conf.default.mtu = 1280
net.ipv6.conf.default.hop_limit = 64
net.ipv6.conf.default.forwarding = 0
net.ipv6.conf.all.max_desync_factor = 600
net.ipv6.conf.all.regen_max_retry = 5
net.ipv6.conf.all.temp_prefered_lft = 86400
net.ipv6.conf.all.temp_valid_lft = 604800
net.ipv6.conf.all.use_tempaddr = 0
net.ipv6.conf.all.router_solicitation_delay = 1
net.ipv6.conf.all.router_solicitation_interval = 4
net.ipv6.conf.all.router_solicitations = 3
net.ipv6.conf.all.dad_transmits = 1
net.ipv6.conf.all.autoconf = 1
net.ipv6.conf.all.accept_redirects = 1
net.ipv6.conf.all.accept_ra = 1
net.ipv6.conf.all.mtu = 1280
net.ipv6.conf.all.hop_limit = 64
net.ipv6.conf.all.forwarding = 0
net.ipv6.conf.eth1.max_desync_factor = 600
net.ipv6.conf.eth1.regen_max_retry = 5
net.ipv6.conf.eth1.temp_prefered_lft = 86400
net.ipv6.conf.eth1.temp_valid_lft = 604800
net.ipv6.conf.eth1.use_tempaddr = 0
net.ipv6.conf.eth1.router_solicitation_delay = 1
net.ipv6.conf.eth1.router_solicitation_interval = 4
net.ipv6.conf.eth1.router_solicitations = 3
net.ipv6.conf.eth1.dad_transmits = 1
net.ipv6.conf.eth1.autoconf = 1
net.ipv6.conf.eth1.accept_redirects = 1
net.ipv6.conf.eth1.accept_ra = 1
net.ipv6.conf.eth1.mtu = 1500
net.ipv6.conf.eth1.hop_limit = 64
net.ipv6.conf.eth1.forwarding = 0
net.ipv6.conf.eth0.max_desync_factor = 600
net.ipv6.conf.eth0.regen_max_retry = 5
net.ipv6.conf.eth0.temp_prefered_lft = 86400
net.ipv6.conf.eth0.temp_valid_lft = 604800
net.ipv6.conf.eth0.use_tempaddr = 0
net.ipv6.conf.eth0.router_solicitation_delay = 1
net.ipv6.conf.eth0.router_solicitation_interval = 4
net.ipv6.conf.eth0.router_solicitations = 3
net.ipv6.conf.eth0.dad_transmits = 1
net.ipv6.conf.eth0.autoconf = 1
net.ipv6.conf.eth0.accept_redirects = 1
net.ipv6.conf.eth0.accept_ra = 1
net.ipv6.conf.eth0.mtu = 1500
net.ipv6.conf.eth0.hop_limit = 64
net.ipv6.conf.eth0.forwarding = 0
net.ipv6.conf.lo.max_desync_factor = 600
net.ipv6.conf.lo.regen_max_retry = 5
net.ipv6.conf.lo.temp_prefered_lft = 86400
net.ipv6.conf.lo.temp_valid_lft = 604800
net.ipv6.conf.lo.use_tempaddr = -1
net.ipv6.conf.lo.router_solicitation_delay = 1
net.ipv6.conf.lo.router_solicitation_interval = 4
net.ipv6.conf.lo.router_solicitations = 3
net.ipv6.conf.lo.dad_transmits = 1
net.ipv6.conf.lo.autoconf = 1
net.ipv6.conf.lo.accept_redirects = 1
net.ipv6.conf.lo.accept_ra = 0
net.ipv6.conf.lo.mtu = 16436
net.ipv6.conf.lo.hop_limit = 64
net.ipv6.conf.lo.forwarding = 0
net.ipv6.neigh.eth1.locktime = 99
net.ipv6.neigh.eth1.proxy_delay = 179
net.ipv6.neigh.eth1.anycast_delay = 199
net.ipv6.neigh.eth1.proxy_qlen = 64
net.ipv6.neigh.eth1.unres_qlen = 3
net.ipv6.neigh.eth1.gc_stale_time = 86400
net.ipv6.neigh.eth1.delay_first_probe_time = 5
net.ipv6.neigh.eth1.base_reachable_time = 30
net.ipv6.neigh.eth1.retrans_time = 199
net.ipv6.neigh.eth1.app_solicit = 0
net.ipv6.neigh.eth1.ucast_solicit = 3
net.ipv6.neigh.eth1.mcast_solicit = 3
net.ipv6.neigh.eth0.locktime = 99
net.ipv6.neigh.eth0.proxy_delay = 179
net.ipv6.neigh.eth0.anycast_delay = 199
net.ipv6.neigh.eth0.proxy_qlen = 64
net.ipv6.neigh.eth0.unres_qlen = 3
net.ipv6.neigh.eth0.gc_stale_time = 86400
net.ipv6.neigh.eth0.delay_first_probe_time = 5
net.ipv6.neigh.eth0.base_reachable_time = 30
net.ipv6.neigh.eth0.retrans_time = 199
net.ipv6.neigh.eth0.app_solicit = 0
net.ipv6.neigh.eth0.ucast_solicit = 3
net.ipv6.neigh.eth0.mcast_solicit = 3
net.ipv6.neigh.lo.locktime = 99
net.ipv6.neigh.lo.proxy_delay = 179
net.ipv6.neigh.lo.anycast_delay = 199
net.ipv6.neigh.lo.proxy_qlen = 64
net.ipv6.neigh.lo.unres_qlen = 3
net.ipv6.neigh.lo.gc_stale_time = 86400
net.ipv6.neigh.lo.delay_first_probe_time = 5
net.ipv6.neigh.lo.base_reachable_time = 30
net.ipv6.neigh.lo.retrans_time = 199
net.ipv6.neigh.lo.app_solicit = 0
net.ipv6.neigh.lo.ucast_solicit = 3
net.ipv6.neigh.lo.mcast_solicit = 3
net.ipv6.neigh.default.gc_thresh3 = 1024
net.ipv6.neigh.default.gc_thresh2 = 512
net.ipv6.neigh.default.gc_thresh1 = 128
net.ipv6.neigh.default.gc_interval = 30
net.ipv6.neigh.default.locktime = 99
net.ipv6.neigh.default.proxy_delay = 179
net.ipv6.neigh.default.anycast_delay = 199
net.ipv6.neigh.default.proxy_qlen = 64
net.ipv6.neigh.default.unres_qlen = 3
net.ipv6.neigh.default.gc_stale_time = 86400
net.ipv6.neigh.default.delay_first_probe_time = 5
net.ipv6.neigh.default.base_reachable_time = 30
net.ipv6.neigh.default.retrans_time = 199
net.ipv6.neigh.default.app_solicit = 0
net.ipv6.neigh.default.ucast_solicit = 3
net.ipv6.neigh.default.mcast_solicit = 3
net.ipv6.bindv6only = 0
net.ipv6.icmp.ratelimit = 100
net.ipv6.route.min_adv_mss = 1220
net.ipv6.route.mtu_expires = 600
net.ipv6.route.gc_elasticity = 0
net.ipv6.route.gc_interval = 30
net.ipv6.route.gc_timeout = 60
net.ipv6.route.gc_min_interval = 5
net.ipv6.route.max_size = 4096
net.ipv6.route.gc_thresh = 1024
net.ipsec.debug_spd = 0
net.ipsec.debug_sadb = 0
net.ipsec.debug_pfkey = 0
net.ipsec.debug_ipv6 = 0
net.ipsec.debug_ipv4 = 0
net.ipsec.replay_window_check = 1
net.unix.max_dgram_qlen = 10
net.token-ring.rif_linked_list_width = 8
net.ipv4.conf.eth1.arp_filter = 0
net.ipv4.conf.eth1.hidden = 0
net.ipv4.conf.eth1.tag = 0
net.ipv4.conf.eth1.log_martians = 0
net.ipv4.conf.eth1.bootp_relay = 0
net.ipv4.conf.eth1.medium_id = 0
net.ipv4.conf.eth1.proxy_arp = 0
net.ipv4.conf.eth1.accept_source_route = 1
net.ipv4.conf.eth1.send_redirects = 1
net.ipv4.conf.eth1.rp_filter = 0
net.ipv4.conf.eth1.shared_media = 1
net.ipv4.conf.eth1.secure_redirects = 1
net.ipv4.conf.eth1.accept_redirects = 1
net.ipv4.conf.eth1.mc_forwarding = 0
net.ipv4.conf.eth1.forwarding = 0
net.ipv4.conf.eth0.arp_filter = 0
net.ipv4.conf.eth0.hidden = 0
net.ipv4.conf.eth0.tag = 0
net.ipv4.conf.eth0.log_martians = 0
net.ipv4.conf.eth0.bootp_relay = 0
net.ipv4.conf.eth0.medium_id = 0
net.ipv4.conf.eth0.proxy_arp = 0
net.ipv4.conf.eth0.accept_source_route = 1
net.ipv4.conf.eth0.send_redirects = 1
net.ipv4.conf.eth0.rp_filter = 0
net.ipv4.conf.eth0.shared_media = 1
net.ipv4.conf.eth0.secure_redirects = 1
net.ipv4.conf.eth0.accept_redirects = 1
net.ipv4.conf.eth0.mc_forwarding = 0
net.ipv4.conf.eth0.forwarding = 0
net.ipv4.conf.lo.arp_filter = 0
net.ipv4.conf.lo.hidden = 0
net.ipv4.conf.lo.tag = 0
net.ipv4.conf.lo.log_martians = 0
net.ipv4.conf.lo.bootp_relay = 0
net.ipv4.conf.lo.medium_id = 0
net.ipv4.conf.lo.proxy_arp = 0
net.ipv4.conf.lo.accept_source_route = 1
net.ipv4.conf.lo.send_redirects = 1
net.ipv4.conf.lo.rp_filter = 0
net.ipv4.conf.lo.shared_media = 1
net.ipv4.conf.lo.secure_redirects = 1
net.ipv4.conf.lo.accept_redirects = 1
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.lo.forwarding = 0
net.ipv4.conf.default.arp_filter = 0
net.ipv4.conf.default.hidden = 0
net.ipv4.conf.default.tag = 0
net.ipv4.conf.default.log_martians = 0
net.ipv4.conf.default.bootp_relay = 0
net.ipv4.conf.default.medium_id = 0
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.default.accept_source_route = 1
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.default.shared_media = 1
net.ipv4.conf.default.secure_redirects = 1
net.ipv4.conf.default.accept_redirects = 1
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.all.arp_filter = 0
net.ipv4.conf.all.hidden = 0
net.ipv4.conf.all.tag = 0
net.ipv4.conf.all.log_martians = 0
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.medium_id = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.send_redirects = 1
net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.all.shared_media = 1
net.ipv4.conf.all.secure_redirects = 1
net.ipv4.conf.all.accept_redirects = 1
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.forwarding = 0
net.ipv4.neigh.eth1.locktime = 199
net.ipv4.neigh.eth1.proxy_delay = 179
net.ipv4.neigh.eth1.anycast_delay = 199
net.ipv4.neigh.eth1.proxy_qlen = 64
net.ipv4.neigh.eth1.unres_qlen = 3
net.ipv4.neigh.eth1.gc_stale_time = 60
net.ipv4.neigh.eth1.delay_first_probe_time = 5
net.ipv4.neigh.eth1.base_reachable_time = 30
net.ipv4.neigh.eth1.retrans_time = 199
net.ipv4.neigh.eth1.app_solicit = 0
net.ipv4.neigh.eth1.ucast_solicit = 3
net.ipv4.neigh.eth1.mcast_solicit = 3
net.ipv4.neigh.eth0.locktime = 199
net.ipv4.neigh.eth0.proxy_delay = 179
net.ipv4.neigh.eth0.anycast_delay = 199
net.ipv4.neigh.eth0.proxy_qlen = 64
net.ipv4.neigh.eth0.unres_qlen = 3
net.ipv4.neigh.eth0.gc_stale_time = 60
net.ipv4.neigh.eth0.delay_first_probe_time = 5
net.ipv4.neigh.eth0.base_reachable_time = 30
net.ipv4.neigh.eth0.retrans_time = 199
net.ipv4.neigh.eth0.app_solicit = 0
net.ipv4.neigh.eth0.ucast_solicit = 3
net.ipv4.neigh.eth0.mcast_solicit = 3
net.ipv4.neigh.lo.locktime = 199
net.ipv4.neigh.lo.proxy_delay = 179
net.ipv4.neigh.lo.anycast_delay = 199
net.ipv4.neigh.lo.proxy_qlen = 64
net.ipv4.neigh.lo.unres_qlen = 3
net.ipv4.neigh.lo.gc_stale_time = 60
net.ipv4.neigh.lo.delay_first_probe_time = 5
net.ipv4.neigh.lo.base_reachable_time = 30
net.ipv4.neigh.lo.retrans_time = 199
net.ipv4.neigh.lo.app_solicit = 0
net.ipv4.neigh.lo.ucast_solicit = 3
net.ipv4.neigh.lo.mcast_solicit = 3
net.ipv4.neigh.default.gc_thresh3 = 1024
net.ipv4.neigh.default.gc_thresh2 = 512
net.ipv4.neigh.default.gc_thresh1 = 128
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.locktime = 199
net.ipv4.neigh.default.proxy_delay = 179
net.ipv4.neigh.default.anycast_delay = 199
net.ipv4.neigh.default.proxy_qlen = 64
net.ipv4.neigh.default.unres_qlen = 3
net.ipv4.neigh.default.gc_stale_time = 60
net.ipv4.neigh.default.delay_first_probe_time = 5
net.ipv4.neigh.default.base_reachable_time = 30
net.ipv4.neigh.default.retrans_time = 199
net.ipv4.neigh.default.app_solicit = 0
net.ipv4.neigh.default.ucast_solicit = 3
net.ipv4.neigh.default.mcast_solicit = 3
net.ipv4.tcp_secure_pmtu = 1
net.ipv4.ipfrag_secret_interval = 600
net.ipv4.tcp_low_latency = 0
net.ipv4.tcp_frto = 0
net.ipv4.tcp_tw_reuse = 0
net.ipv4.icmp_ratemask = 6168
net.ipv4.icmp_ratelimit = 100
net.ipv4.tcp_adv_win_scale = 2
net.ipv4.tcp_app_win = 31
net.ipv4.tcp_rmem = 4096 87380 174760
net.ipv4.tcp_wmem = 4096 16384 131072
net.ipv4.tcp_mem = 195584 196096 196608
net.ipv4.tcp_dsack = 1
net.ipv4.tcp_ecn = 0
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_fack = 1
net.ipv4.tcp_orphan_retries = 0
net.ipv4.igmp_max_memberships = 20
net.ipv4.route.secret_interval = 600
net.ipv4.route.min_adv_mss = 256
net.ipv4.route.min_pmtu = 552
net.ipv4.route.mtu_expires = 600
net.ipv4.route.gc_elasticity = 8
net.ipv4.route.error_burst = 500
net.ipv4.route.error_cost = 100
net.ipv4.route.redirect_silence = 2048
net.ipv4.route.redirect_number = 9
net.ipv4.route.redirect_load = 2
net.ipv4.route.gc_interval = 60
net.ipv4.route.gc_timeout = 300
net.ipv4.route.gc_min_interval = 5
net.ipv4.route.max_size = 524288
net.ipv4.route.gc_thresh = 32768
net.ipv4.route.max_delay = 10
net.ipv4.route.min_delay = 2
net.ipv4.icmp_ignore_bogus_error_responses = 0
net.ipv4.icmp_echo_ignore_broadcasts = 0
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.ip_local_port_range = 32768 61000
net.ipv4.tcp_max_syn_backlog = 1024
net.ipv4.tcp_rfc1337 = 0
net.ipv4.tcp_stdurg = 0
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.ipfrag_time = 30
net.ipv4.ip_dynaddr = 0
net.ipv4.ipfrag_low_thresh = 196608
net.ipv4.ipfrag_high_thresh = 262144
net.ipv4.tcp_max_tw_buckets = 180000
net.ipv4.tcp_max_orphans = 32768
net.ipv4.tcp_synack_retries = 5
net.ipv4.tcp_syn_retries = 5
net.ipv4.ip_nonlocal_bind = 0
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.ip_autoconfig = 0
net.ipv4.ip_default_ttl = 64
net.ipv4.ip_forward = 0
net.ipv4.tcp_retrans_collapse = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.core.somaxconn = 128
net.core.hot_list_length = 128
net.core.optmem_max = 10240
net.core.message_burst = 50
net.core.message_cost = 5
net.core.mod_cong = 290
net.core.lo_cong = 100
net.core.no_cong = 20
net.core.no_cong_thresh = 20
net.core.netdev_max_backlog = 300
net.core.dev_weight = 64
net.core.rmem_default = 65535
net.core.wmem_default = 65535
net.core.rmem_max = 131071
net.core.wmem_max = 131071
vm.block_dump = 0
vm.laptop_mode = 0
vm.max_map_count = 65536
vm.max-readahead = 127
vm.min-readahead = 3
vm.heap-stack-gap = 1
vm.page-cluster = 3
vm.pagetable_cache = 25 50
vm.kswapd = 512 32 8
vm.overcommit_memory = 0
vm.bdflush = 50 500 0 0 500 3000 60 20 0
vm.vm_passes = 60
vm.vm_lru_balance_ratio = 2
vm.vm_anon_lru = 0
vm.vm_mapped_ratio = 100
vm.vm_cache_scan_ratio = 6
vm.vm_vfs_scan_ratio = 6
vm.vm_gfp_debug = 0
vm.vm_shmem_swap = 0
kernel.HZ = 100
kernel.stackdefer = 2560
kernel.stackwarn = 1024
kernel.min-timeslice = 10000
kernel.max-timeslice = 310000
kernel.sched_yield_scale = 1
kernel.overflowgid = 65534
kernel.overflowuid = 65534
kernel.random.uuid = 081d6d4a-1b7e-43fc-8dfd-96cefc7b0d78
kernel.random.boot_id = 70b24462-dbae-4e83-a50f-5e94d36a5e56
kernel.random.write_wakeup_threshold = 128
kernel.random.read_wakeup_threshold = 8
kernel.random.entropy_avail = 4096
kernel.random.poolsize = 512
kernel.threads-max = 14336
kernel.cad_pid = 1
kernel.sysrq = 0
kernel.sem = 250 512000 32 2048
kernel.msgmnb = 16384
kernel.msgmni = 1024
kernel.msgmax = 65536
kernel.shmmni = 4096
kernel.shmall = 2097152
kernel.shmmax = 268435456
kernel.shm-bigpages-per-file = 32768
kernel.shm-use-bigpages = 0
kernel.rtsig-max = 1024
kernel.rtsig-nr = 0
kernel.acct = 4 2 30
kernel.hotplug = /sbin/hotplug
kernel.modprobe = /sbin/modprobe
kernel.printk = 1 4 1 7
kernel.ctrl-alt-del = 0
kernel.real-root-dev = 26631
kernel.cap-bound = -257
kernel.tainted = 1
kernel.core_pattern = core
kernel.core_uses_pid = 0
kernel.panic = 0
kernel.domainname =
kernel.hostname = db2pg607
kernel.version = #1 SMP Thu Apr 8 10:16:17 UTC 2004
kernel.osrelease = 2.4.21-203-smp
kernel.ostype = Linux
fs.jbd-debug = 0
fs.quota.syncs = 10
fs.quota.free_dquots = 0
fs.quota.allocated_dquots = 0
fs.quota.cache_hits = 0
fs.quota.writes = 0
fs.quota.reads = 0
fs.quota.drops = 0
fs.quota.lookups = 0
fs.aio-pinned = 0
fs.aio-max-pinned = 163838
fs.aio-max-size = 131072
fs.aio-max-nr = 65536
fs.aio-nr = 0
fs.lease-break-time = 45
fs.dir-notify-enable = 1
fs.leases-enable = 1
fs.overflowgid = 65534
fs.overflowuid = 65534
fs.dentry-state = 11287 10455 45 0 0 0
fs.file-max = 16384
fs.file-nr = 894 479 16384
fs.inode-state = 10243 28 0 0 0 0 0
fs.inode-nr = 10243 28
Philippe Peloquin schrieb:
I saw an Linux IRC Server with more than 40K concurrent parallel
connection..
I think there a "File Descriptor" hard limit in the kernel by default,
you have to increase it and recompile it..
Anyone can comfirm?
At 14:56 2005-04-04, you wrote:
Hello all!
Does anybody use DB2Connect on United Linux 1.0 We have the following
Problem:
The DB2Connect Software enables access from DB2 Clients (e.g. for
connecting Application Servers to Databases) to
to DB2 Databases on Z/oS Systems. You can say that DB2Connect works
as a gateway.
At the moment we can't open more then 1100 parallel connections per
DB2Connect installation. But doing the same on AIX 4000 - 5000
connections are possible at the same time.
At the moment, suing United Linux 1.0 reach 1100 Connections then the
whole machine hangs and must be rebooted. We don't achieve the CPU
and RAM limits.
Are there e.g. any kernel parameters that limit the number of
parallel calls to a Server ?? We are using kernel 2.4.21!
First of all, we get a sempahore error, but after changing the values
in sysctl.conf, the were no further errors.
Is it possible, that Linux can't handle more then 1000 parallel
connections? I don't hope so.
Thanks for answering!
--
Philippe Peloquin, B.Sc.
Systems analyst, OSS Application
Network Management Systems
Rogers Wireless
B: 514.734.6177
C: 514.867.0715
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