ping: sendto: No buffer space available

[Pavel S. Shirshov]

Hello.

OS:
# uname -a
FreeBSD devel.ucsnet.ru 4.8-RELEASE-p13 FreeBSD 4.8-RELEASE-p13 #9: Wed Nov 26 12:38:10 YEKT 2003     root at devel.ucsnet.ru:/usr/src/sys/compile/PAVELSH_DEVEL  i386

Problem - error message "No buffer space available".
But,
# netstat -m
145/18656/32768 mbufs in use (current/peak/max):
        144 mbufs allocated to data
        1 mbufs allocated to packet headers
142/628/8192 mbuf clusters in use (current/peak/max)
5920 Kbytes allocated to network (24% of mb_map in use)
25 requests for memory denied
1 requests for memory delayed
0 calls to protocol drain routines

Peak was 18656, max 32768. Why i'm got message "No buffer space
available"?

P.S.:
# sysctl -a net.inet
net.inet.ip.portrange.lowfirst: 1023
net.inet.ip.portrange.lowlast: 600
net.inet.ip.portrange.first: 1024
net.inet.ip.portrange.last: 5000
net.inet.ip.portrange.hifirst: 49152
net.inet.ip.portrange.hilast: 65535
net.inet.ip.forwarding: 1
net.inet.ip.redirect: 1
net.inet.ip.ttl: 64
net.inet.ip.rtexpire: 315
net.inet.ip.rtminexpire: 10
net.inet.ip.rtmaxcache: 128
net.inet.ip.sourceroute: 0
net.inet.ip.intr_queue_maxlen: 100
net.inet.ip.intr_queue_drops: 0
net.inet.ip.accept_sourceroute: 0
net.inet.ip.fastforwarding: 0
net.inet.ip.keepfaith: 0
net.inet.ip.subnets_are_local: 0
net.inet.ip.dummynet.hash_size: 64
net.inet.ip.dummynet.curr_time: 60478441
net.inet.ip.dummynet.ready_heap: 0
net.inet.ip.dummynet.extract_heap: 0
net.inet.ip.dummynet.searches: 0
net.inet.ip.dummynet.search_steps: 0
net.inet.ip.dummynet.expire: 1
net.inet.ip.dummynet.max_chain_len: 16
net.inet.ip.dummynet.red_lookup_depth: 256
net.inet.ip.dummynet.red_avg_pkt_size: 512
net.inet.ip.dummynet.red_max_pkt_size: 1500
net.inet.ip.fw.enable: 1
net.inet.ip.fw.one_pass: 1
net.inet.ip.fw.debug: 1
net.inet.ip.fw.verbose: 1
net.inet.ip.fw.verbose_limit: 0
net.inet.ip.fw.dyn_buckets: 256
net.inet.ip.fw.curr_dyn_buckets: 256
net.inet.ip.fw.dyn_count: 0
net.inet.ip.fw.dyn_max: 1000
net.inet.ip.fw.static_count: 33
net.inet.ip.fw.dyn_ack_lifetime: 300
net.inet.ip.fw.dyn_syn_lifetime: 20
net.inet.ip.fw.dyn_fin_lifetime: 1
net.inet.ip.fw.dyn_rst_lifetime: 1
net.inet.ip.fw.dyn_udp_lifetime: 10
net.inet.ip.fw.dyn_short_lifetime: 5
net.inet.ip.fw.dyn_grace_time: 10
net.inet.ip.maxfragpackets: 256
net.inet.ip.maxfragsperpacket: 16
net.inet.ip.sendsourcequench: 0
net.inet.ip.check_interface: 0
net.inet.ip.stealth: 0
net.inet.icmp.maskrepl: 0
net.inet.icmp.icmplim: 200
net.inet.icmp.drop_redirect: 0
net.inet.icmp.log_redirect: 0
net.inet.icmp.icmplim_output: 1
net.inet.icmp.bmcastecho: 0
net.inet.tcp.rfc1323: 1
net.inet.tcp.rfc1644: 0
net.inet.tcp.mssdflt: 512
net.inet.tcp.keepidle: 7200000
net.inet.tcp.keepintvl: 75000
net.inet.tcp.sendspace: 32768
net.inet.tcp.recvspace: 57344
net.inet.tcp.keepinit: 75000
net.inet.tcp.delacktime: 100
net.inet.tcp.log_in_vain: 0
net.inet.tcp.blackhole: 0
net.inet.tcp.delayed_ack: 1
net.inet.tcp.drop_synfin: 0
net.inet.tcp.path_mtu_discovery: 1
net.inet.tcp.slowstart_flightsize: 1
net.inet.tcp.local_slowstart_flightsize: 4
net.inet.tcp.newreno: 1
net.inet.tcp.tcbhashsize: 512
net.inet.tcp.do_tcpdrain: 1
net.inet.tcp.pcbcount: 66
net.inet.tcp.icmp_may_rst: 1
net.inet.tcp.isn_reseed_interval: 0
net.inet.tcp.inflight_enable: 0
net.inet.tcp.inflight_debug: 0
net.inet.tcp.inflight_min: 6144
net.inet.tcp.inflight_max: 1073725440
net.inet.tcp.inflight_stab: 20
net.inet.tcp.syncookies: 1
net.inet.tcp.syncache.bucketlimit: 30
net.inet.tcp.syncache.cachelimit: 15359
net.inet.tcp.syncache.count: 0
net.inet.tcp.syncache.hashsize: 512
net.inet.tcp.syncache.rexmtlimit: 3
net.inet.tcp.msl: 30000
net.inet.tcp.rexmit_min: 1000
net.inet.tcp.rexmit_slop: 200
net.inet.tcp.always_keepalive: 1
net.inet.udp.checksum: 1
net.inet.udp.maxdgram: 9216
net.inet.udp.recvspace: 41600
net.inet.udp.log_in_vain: 0
net.inet.udp.blackhole: 0
net.inet.accf.unloadable: 0
net.inet.raw.maxdgram: 16384
net.inet.raw.recvspace: 16384

P.P.S. Sorry for bad English.

-- 
С уважением,
 Pavel                          mailto:pavelbsd at mail.ru