From owner-freebsd-net Sat Nov 23 20:29:47 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4349A37B401 for ; Sat, 23 Nov 2002 20:29:39 -0800 (PST) Received: from hotmail.com (f137.law3.hotmail.com [209.185.241.137]) by mx1.FreeBSD.org (Postfix) with ESMTP id C174B43E6E for ; Sat, 23 Nov 2002 20:29:38 -0800 (PST) (envelope-from spoug@hotmail.com) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sat, 23 Nov 2002 20:29:38 -0800 Received: from 207.183.39.145 by lw3fd.law3.hotmail.msn.com with HTTP; Sun, 24 Nov 2002 04:29:38 GMT X-Originating-IP: [207.183.39.145] From: "Vincent Goupil" To: freebsd-net@FreeBSD.ORG Subject: Re: Packets dropped by FreeBSD Date: Sun, 24 Nov 2002 04:29:38 +0000 Mime-Version: 1.0 Content-Type: text/plain; format=flowed Message-ID: X-OriginalArrivalTime: 24 Nov 2002 04:29:38.0738 (UTC) FILETIME=[19C04120:01C29372] Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org What could be wrong ? Output before the reboot tcp: 3358 packets sent 1859 data packets (330166 bytes) 16 data packets (20280 bytes) retransmitted 0 resends initiated by MTU discovery 1476 ack-only packets (351 delayed) 0 URG only packets 0 window probe packets 1 window update packet 6 control packets 3329 packets received 1425 acks (for 325868 bytes) 110 duplicate acks 0 acks for unsent data 2827 packets (127264 bytes) received in-sequence 3 completely duplicate packets (1672 bytes) 0 old duplicate packets 4 packets with some dup. data (1320 bytes duped) 219 out-of-order packets (20032 bytes) 0 packets (0 bytes) of data after window 0 window probes 0 window update packets 0 packets received after close 0 discarded for bad checksums 0 discarded for bad header offset fields 0 discarded because packet too short 2 connection requests 4 connection accepts 3 bad connection attempts 0 listen queue overflows 6 connections established (including accepts) 4 connections closed (including 0 drops) 0 connections updated cached RTT on close 0 connections updated cached RTT variance on close 0 connections updated cached ssthresh on close 0 embryonic connections dropped 1024 segments updated rtt (of 1035 attempts) 1 retransmit timeout 0 connections dropped by rexmit timeout 0 persist timeouts 0 connections dropped by persist timeout 0 keepalive timeouts 0 keepalive probes sent 0 connections dropped by keepalive 2 correct ACK header predictions 1489 correct data packet header predictions 4 syncache entries added 0 retransmitted 0 dupsyn 0 dropped 4 completed 0 bucket overflow 0 cache overflow 0 reset 0 stale 0 aborted 0 badack 0 unreach 0 zone failures 0 cookies sent 0 cookies received udp: 7090 datagrams received 0 with incomplete header 0 with bad data length field 0 with bad checksum 0 with no checksum 132 dropped due to no socket 3511 broadcast/multicast datagrams dropped due to no socket 0 dropped due to full socket buffers 0 not for hashed pcb 3447 delivered 1999 datagrams output ip: 422282 total packets received 0 bad header checksums 0 with size smaller than minimum 0 with data size < data length 0 with ip length > max ip packet size 0 with header length < data size 0 with data length < header length 0 with bad options 0 with incorrect version number 0 fragments received 0 fragments dropped (dup or out of space) 0 fragments dropped after timeout 0 packets reassembled ok 11227 packets for this host 0 packets for unknown/unsupported protocol 408471 packets forwarded (0 packets fast forwarded) 108 packets not forwardable 0 packets received for unknown multicast group 478 redirects sent 6971 packets sent from this host 0 packets sent with fabricated ip header 0 output packets dropped due to no bufs, etc. 0 output packets discarded due to no route 0 output datagrams fragmented 0 fragments created 0 datagrams that can't be fragmented 0 tunneling packets that can't find gif 0 datagrams with bad address in header icmp: 240 calls to icmp_error 0 errors not generated 'cuz old message was icmp Output histogram: echo reply: 1 destination unreachable: 240 routing redirect: 478 0 messages with bad code fields 0 messages < minimum length 0 bad checksums 0 messages with bad length 0 multicast echo requests ignored 0 multicast timestamp requests ignored Input histogram: echo reply: 806 echo: 1 1 message response generated 0 invalid return addresses 0 no return routes ICMP address mask responses are disabled igmp: 0 messages received 0 messages received with too few bytes 0 messages received with bad checksum 0 membership queries received 0 membership queries received with invalid field(s) 0 membership reports received 0 membership reports received with invalid field(s) 0 membership reports received for groups to which we belong 0 membership reports sent 599/656/6016 mbufs in use (current/peak/max): 599 mbufs allocated to data 512/654/1504 mbuf clusters in use (current/peak/max) 1472 Kbytes allocated to network (32% of mb_map in use) 0 requests for memory denied 0 requests for memory delayed 0 calls to protocol drain routines [root@wally ~] I increased default values to theses ones: kern.ipc.somaxconn=1024 (sysctl) kern.maxusers=128 (loader.conf) kern.ipc.nmbclusters=8192 (loader.conf) tcp: 1963 packets sent 1135 data packets (111983 bytes) 15 data packets (21344 bytes) retransmitted 0 resends initiated by MTU discovery 813 ack-only packets (170 delayed) 0 URG only packets 0 window probe packets 0 window update packets 0 control packets 1860 packets received 750 acks (for 107768 bytes) 110 duplicate acks 0 acks for unsent data 1522 packets (68055 bytes) received in-sequence 0 completely duplicate packets (0 bytes) 0 old duplicate packets 0 packets with some dup. data (0 bytes duped) 118 out-of-order packets (8800 bytes) 0 packets (0 bytes) of data after window 0 window probes 0 window update packets 0 packets received after close 0 discarded for bad checksums 0 discarded for bad header offset fields 0 discarded because packet too short 0 connection requests 1 connection accept 0 bad connection attempts 0 listen queue overflows 1 connection established (including accepts) 0 connections closed (including 0 drops) 0 connections updated cached RTT on close 0 connections updated cached RTT variance on close 0 connections updated cached ssthresh on close 0 embryonic connections dropped 489 segments updated rtt (of 491 attempts) 3 retransmit timeouts 0 connections dropped by rexmit timeout 0 persist timeouts 0 connections dropped by persist timeout 0 keepalive timeouts 0 keepalive probes sent 0 connections dropped by keepalive 0 correct ACK header predictions 883 correct data packet header predictions 1 syncache entries added 0 retransmitted 0 dupsyn 0 dropped 1 completed 0 bucket overflow 0 cache overflow 0 reset 0 stale 0 aborted 0 badack 0 unreach 0 zone failures 0 cookies sent 0 cookies received udp: 140 datagrams received 0 with incomplete header 0 with bad data length field 0 with bad checksum 0 with no checksum 0 dropped due to no socket 50 broadcast/multicast datagrams dropped due to no socket 0 dropped due to full socket buffers 0 not for hashed pcb 90 delivered 68 datagrams output ip: 2329 total packets received 0 bad header checksums 0 with size smaller than minimum 0 with data size < data length 0 with ip length > max ip packet size 0 with header length < data size 0 with data length < header length 0 with bad options 0 with incorrect version number 0 fragments received 0 fragments dropped (dup or out of space) 0 fragments dropped after timeout 0 packets reassembled ok 2069 packets for this host 0 packets for unknown/unsupported protocol 241 packets forwarded (0 packets fast forwarded) 0 packets not forwardable 0 packets received for unknown multicast group 0 redirects sent 2172 packets sent from this host 0 packets sent with fabricated ip header 0 output packets dropped due to no bufs, etc. 0 output packets discarded due to no route 0 output datagrams fragmented 0 fragments created 0 datagrams that can't be fragmented 0 tunneling packets that can't find gif 0 datagrams with bad address in header icmp: 0 calls to icmp_error 0 errors not generated 'cuz old message was icmp Output histogram: echo reply: 58 0 messages with bad code fields 0 messages < minimum length 0 bad checksums 0 messages with bad length 0 multicast echo requests ignored 0 multicast timestamp requests ignored Input histogram: echo reply: 10 echo: 58 58 message responses generated 0 invalid return addresses 0 no return routes ICMP address mask responses are disabled igmp: 0 messages received 0 messages received with too few bytes 0 messages received with bad checksum 0 membership queries received 0 membership queries received with invalid field(s) 0 membership reports received 0 membership reports received with invalid field(s) 0 membership reports received for groups to which we belong 0 membership reports sent 600/672/6016 mbufs in use (current/peak/max): 600 mbufs allocated to data 512/564/1504 mbuf clusters in use (current/peak/max) 1296 Kbytes allocated to network (28% of mb_map in use) 0 requests for memory denied 0 requests for memory delayed 0 calls to protocol drain routines [root@wally /usr/src/sys/i386/conf] Could it help ? > > Currently, this is the output. I don't have one when it happen. I will > > try to provide one. > > > > [root@wally ~] netstat -m > > 514/608/6016 mbufs in use (current/peak/max): > > 514 mbufs allocated to data > > 512/584/1504 mbuf clusters in use (current/peak/max) > > 1320 Kbytes allocated to network (29% of mb_map in use) > > 0 requests for memory denied > > 0 requests for memory delayed > > 0 calls to protocol drain routines > > [root@wally ~] > > > > Is this the mb_map ? > > > > > > > >Any hints about mbuf exchaustion in the output of "netstat -m" ? > > > > >It looks ok :/ > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-net" in the body of the message _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message