TCP/IP problem on 2.2.18. Very big delay when pinging local interface (5x NIC, 18x IP).

From: Rok Papez (rok.papez@kiss.uni-lj.si)
Date: Mon Apr 16 2001 - 04:03:33 EST

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Next in thread: Craig Schlenter: "Re: TCP/IP problem on 2.2.18. Very big delay when pinging *local* interface (5x NIC, 18x IP)."
Reply: Craig Schlenter: "Re: TCP/IP problem on 2.2.18. Very big delay when pinging *local* interface (5x NIC, 18x IP)."
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Hi!

Running 5x 3c905 NICs with 18 IPs

Summary:
When I boot Linux and ping a *local* IP address, it has a
very big delay. Flood ping works without a glitch, normal
ping exhibits a big delay at the start but will eventualy
start working normally.

Has anyone noticed similar problems ?

[root@skuta network-scripts]# ping 172.26.4.254
PING 172.26.4.254 (172.26.4.254) from 172.26.4.254 : 56(84) bytes of data.
64 bytes from 172.26.4.254: icmp_seq=0 ttl=255 time=0.1 ms
64 bytes from 172.26.4.254: icmp_seq=1 ttl=255 time=19050.4 ms
64 bytes from 172.26.4.254: icmp_seq=2 ttl=255 time=24225.6 ms
64 bytes from 172.26.4.254: icmp_seq=3 ttl=255 time=28241.1 ms
64 bytes from 172.26.4.254: icmp_seq=4 ttl=255 time=32260.9 ms
64 bytes from 172.26.4.254: icmp_seq=5 ttl=255 time=36280.6 ms
64 bytes from 172.26.4.254: icmp_seq=6 ttl=255 time=35299.7 ms
64 bytes from 172.26.4.254: icmp_seq=7 ttl=255 time=34321.5 ms
64 bytes from 172.26.4.254: icmp_seq=8 ttl=255 time=33327.0 ms
64 bytes from 172.26.4.254: icmp_seq=9 ttl=255 time=32348.4 ms
64 bytes from 172.26.4.254: icmp_seq=10 ttl=255 time=31375.9 ms
64 bytes from 172.26.4.254: icmp_seq=11 ttl=255 time=30379.0 ms
64 bytes from 172.26.4.254: icmp_seq=12 ttl=255 time=29401.5 ms
64 bytes from 172.26.4.254: icmp_seq=13 ttl=255 time=28405.0 ms
64 bytes from 172.26.4.254: icmp_seq=14 ttl=255 time=27423.6 ms
64 bytes from 172.26.4.254: icmp_seq=15 ttl=255 time=26427.1 ms
64 bytes from 172.26.4.254: icmp_seq=16 ttl=255 time=25445.2 ms
64 bytes from 172.26.4.254: icmp_seq=17 ttl=255 time=24450.0 ms
64 bytes from 172.26.4.254: icmp_seq=18 ttl=255 time=23472.6 ms
64 bytes from 172.26.4.254: icmp_seq=19 ttl=255 time=22494.6 ms
64 bytes from 172.26.4.254: icmp_seq=20 ttl=255 time=21498.2 ms
64 bytes from 172.26.4.254: icmp_seq=21 ttl=255 time=20515.7 ms
64 bytes from 172.26.4.254: icmp_seq=22 ttl=255 time=19520.9 ms
64 bytes from 172.26.4.254: icmp_seq=23 ttl=255 time=18541.0 ms
64 bytes from 172.26.4.254: icmp_seq=24 ttl=255 time=17545.9 ms
64 bytes from 172.26.4.254: icmp_seq=25 ttl=255 time=16565.7 ms
64 bytes from 172.26.4.254: icmp_seq=26 ttl=255 time=15591.5 ms
64 bytes from 172.26.4.254: icmp_seq=27 ttl=255 time=14613.1 ms
64 bytes from 172.26.4.254: icmp_seq=28 ttl=255 time=13617.1 ms
64 bytes from 172.26.4.254: icmp_seq=29 ttl=255 time=12636.6 ms
64 bytes from 172.26.4.254: icmp_seq=30 ttl=255 time=11661.6 ms
64 bytes from 172.26.4.254: icmp_seq=31 ttl=255 time=10681.2 ms
64 bytes from 172.26.4.254: icmp_seq=32 ttl=255 time=9703.5 ms
64 bytes from 172.26.4.254: icmp_seq=33 ttl=255 time=8706.6 ms
64 bytes from 172.26.4.254: icmp_seq=34 ttl=255 time=7725.9 ms
64 bytes from 172.26.4.254: icmp_seq=35 ttl=255 time=6737.6 ms
64 bytes from 172.26.4.254: icmp_seq=36 ttl=255 time=5767.3 ms
64 bytes from 172.26.4.254: icmp_seq=37 ttl=255 time=4786.5 ms
64 bytes from 172.26.4.254: icmp_seq=38 ttl=255 time=3791.6 ms
64 bytes from 172.26.4.254: icmp_seq=39 ttl=255 time=2813.6 ms
64 bytes from 172.26.4.254: icmp_seq=40 ttl=255 time=1834.2 ms
64 bytes from 172.26.4.254: icmp_seq=41 ttl=255 time=837.8 ms
64 bytes from 172.26.4.254: icmp_seq=42 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=43 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=44 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=45 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=46 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=47 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=48 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=49 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=50 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=51 ttl=255 time=4000.7 ms
64 bytes from 172.26.4.254: icmp_seq=52 ttl=255 time=3021.2 ms
64 bytes from 172.26.4.254: icmp_seq=53 ttl=255 time=2025.4 ms
64 bytes from 172.26.4.254: icmp_seq=54 ttl=255 time=1048.1 ms
64 bytes from 172.26.4.254: icmp_seq=55 ttl=255 time=53.3 ms
64 bytes from 172.26.4.254: icmp_seq=56 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=57 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=58 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=59 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=60 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=61 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=62 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=63 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=64 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=65 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=66 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=67 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=68 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=69 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=70 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=71 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=72 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=73 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=74 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=75 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=76 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=77 ttl=255 time=0.1 ms
64 bytes from 172.26.4.254: icmp_seq=78 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=79 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=80 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=81 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=82 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=83 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=84 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=85 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=86 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=87 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=88 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=89 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=90 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=91 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=92 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=93 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=94 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=95 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=96 ttl=255 time=0.0 ms
64 bytes from 172.26.4.254: icmp_seq=97 ttl=255 time=0.0 ms

--- 172.26.4.254 ping statistics ---
98 packets transmitted, 98 packets received, 0% packet loss
round-trip min/avg/max = 0.0/8168.0/36280.6 ms

BOX: Linux RedHat 6.2 with 2.2.18 kernel, custom compile.
--------------------------------------------------
eth0 Link encap:Ethernet HWaddr 00:01:02:F4:F3:BE
          inet addr:10.21.2.96 Bcast:10.255.255.255 Mask:255.0.0.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:106287 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10118 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:5 Base address:0x1000

eth1 Link encap:Ethernet HWaddr 00:01:02:F4:F4:25
          inet addr:172.26.1.254 Bcast:172.26.1.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:1460 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:11 Base address:0x1080

eth1:0 Link encap:Ethernet HWaddr 00:01:02:F4:F4:25
          inet addr:172.26.2.254 Bcast:172.26.2.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:11 Base address:0x1080

eth1:1 Link encap:Ethernet HWaddr 00:01:02:F4:F4:25
          inet addr:172.26.3.254 Bcast:172.26.3.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:11 Base address:0x1080

eth1:2 Link encap:Ethernet HWaddr 00:01:02:F4:F4:25
          inet addr:172.26.4.254 Bcast:172.26.4.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:11 Base address:0x1080

eth1:3 Link encap:Ethernet HWaddr 00:01:02:F4:F4:25
          inet addr:172.26.5.254 Bcast:172.26.5.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:11 Base address:0x1080

eth2 Link encap:Ethernet HWaddr 00:01:02:F4:F4:21
          inet addr:172.26.100.1 Bcast:172.26.100.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:5 Base address:0x1400

eth2:0 Link encap:Ethernet HWaddr 00:01:02:F4:F4:21
          inet addr:172.26.101.1 Bcast:172.26.101.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:5 Base address:0x1400

eth2:1 Link encap:Ethernet HWaddr 00:01:02:F4:F4:21
          inet addr:172.26.102.1 Bcast:172.26.102.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:5 Base address:0x1400

eth2:2 Link encap:Ethernet HWaddr 00:01:02:F4:F4:21
          inet addr:172.26.103.1 Bcast:172.26.103.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:5 Base address:0x1400

eth2:3 Link encap:Ethernet HWaddr 00:01:02:F4:F4:21
          inet addr:172.26.104.1 Bcast:172.26.104.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:5 Base address:0x1400

eth3 Link encap:Ethernet HWaddr 00:01:02:F4:F4:A6
          inet addr:172.26.200.1 Bcast:172.26.200.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:133068 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5112 errors:0 dropped:0 overruns:0 carrier:0
          collisions:154 txqueuelen:100
          Interrupt:10 Base address:0x1480

eth3:0 Link encap:Ethernet HWaddr 00:01:02:F4:F4:A6
          inet addr:172.26.201.1 Bcast:172.26.201.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:10 Base address:0x1480

eth3:1 Link encap:Ethernet HWaddr 00:01:02:F4:F4:A6
          inet addr:172.26.202.1 Bcast:172.26.202.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:10 Base address:0x1480

eth3:2 Link encap:Ethernet HWaddr 00:01:02:F4:F4:A6
          inet addr:172.26.203.1 Bcast:172.26.203.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:10 Base address:0x1480

eth3:3 Link encap:Ethernet HWaddr 00:01:02:F4:F4:A6
          inet addr:172.26.204.1 Bcast:172.26.204.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          Interrupt:10 Base address:0x1480

/* This one is totaly dummy... not connected */
eth4 Link encap:Ethernet HWaddr 00:01:02:F4:F4:89
          inet addr:127.0.0.2 Bcast:127.255.255.255 Mask:255.0.0.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:55182 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100

lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          UP LOOPBACK RUNNING MTU:3924 Metric:1
          RX packets:2233847 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2233847 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0

------------------------------------------------------------
[root@skuta /root]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.26.1.254 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
172.26.3.254 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
172.26.101.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth2
172.26.103.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth2
172.26.5.254 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
172.26.204.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth3
172.26.200.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth3
172.26.202.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth3
172.26.2.254 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
172.26.100.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth2
172.26.102.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth2
172.26.4.254 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
172.26.104.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth2
172.26.201.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth3
172.26.203.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth3
127.0.0.2 0.0.0.0 255.255.255.255 UH 0 0 0 eth4
10.21.2.96 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
172.26.4.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
172.26.103.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
172.26.5.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
172.26.102.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
172.26.101.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
172.26.100.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
172.26.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
172.26.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
172.26.3.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
172.26.202.0 0.0.0.0 255.255.255.0 U 0 0 0 eth3
172.26.203.0 0.0.0.0 255.255.255.0 U 0 0 0 eth3
172.26.200.0 0.0.0.0 255.255.255.0 U 0 0 0 eth3
172.26.201.0 0.0.0.0 255.255.255.0 U 0 0 0 eth3
172.26.204.0 0.0.0.0 255.255.255.0 U 0 0 0 eth3
172.26.104.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
10.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 eth4
0.0.0.0 10.1.1.1 0.0.0.0 UG 0 0 0 eth0

------------------------------------------------------
[root@skuta /etc]# lsmod
Module Size Used by
agpgart 4724 1 (autoclean)
3c59x 20928 5 (autoclean)
nistnet 49120 0 (unused)

[root@skuta /etc]# uname -a
Linux skuta 2.2.18 #2 Tue Mar 13 09:36:25 CET 2001 i686 unknown
------------------------------------------------------

-- 
lp,
Rok.
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Next message: Alexander Viro: "Re: loop problems continue in 2.4.3"
Previous message: umam@delhi.tcs.co.in: "VRRP related"
Next in thread: Craig Schlenter: "Re: TCP/IP problem on 2.2.18. Very big delay when pinging *local* interface (5x NIC, 18x IP)."
Reply: Craig Schlenter: "Re: TCP/IP problem on 2.2.18. Very big delay when pinging *local* interface (5x NIC, 18x IP)."
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Mon Apr 23 2001 - 21:00:19 EST

TCP/IP problem on 2.2.18. Very big delay when pinging *local* interface (5x NIC, 18x IP).

TCP/IP problem on 2.2.18. Very big delay when pinging local interface (5x NIC, 18x IP).