Re: Linux and DB2

From: Markus (updates4004_at_vr-web.de)
Date: 04/05/05

  • Next message: João Paulo Caldas Campello: "Any way to automatically change arbitrary headers of IP packets on-the-fly?"
    Date: Tue, 05 Apr 2005 08:24:01 +0200
    To: Philippe Peloquin <noway@nowaysoft.com>, focus-linux@securityfocus.com
    
    

    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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