Messages in this thread | | | Date | Fri, 25 Sep 1998 17:28:09 +0200 (CEST) | From | "Michael L. Galbraith" <> | Subject | isdn slowdown with recent kernels |
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Hi Folks,
I don't know exactly when this started happening, but with recent kernels, every once in a while my isdn connection goes into ULTRA slow mode. This only happens after the machine has been up and working away all day. I can check my mail etc. in the morning just fine, but come evening (when my connection comes back alive) a ping to my provider takes over a second. (Normally, it's 40ms) Rebooting always clears this up.
Below is a tcpdump of me trying to retreive mail. It's only 45 lines long for 5 minutes of net activity :). Fetchmail terminated on POP timeout. After a reboot, everything worked fine as always when this happens.
My setup is kernel 2.1.122 on P150MMX w. Teles 16.3, rawip connection with latest isdn4linux ipppd. Isdn driver is stock 2.1.122 at the moment.
Just holler if any additional info is needed/helpful. I would have reported this sooner, but tcpdump was printing 'truncated ip.. bla bytes missing'.
-Mike
16:03:44.527426 193.203.186.200.1065 > 193.203.186.3.110: . ack 751235899 win 32120 (DF) 16:03:44.623706 193.203.186.3.110 > 193.203.186.200.1065: P 1:295(294) ack 0 win 4096 16:03:44.623974 193.203.186.200.1065 > 193.203.186.3.110: F 0:0(0) ack 1 win 32120 (DF) 16:03:44.649011 193.203.186.3.110 > 193.203.186.200.1065: . ack 1 win 4096 16:03:44.649187 193.203.186.200.1069 > 193.203.186.3.110: S 1963384023:1963384023(0) win 32120 <mss 1460,sackOK,timestamp 3983258 0,nop,wscale 0> (DF) 16:03:44.678725 193.203.186.3.110 > 193.203.186.200.1069: S 781952000:781952000(0) ack 1963384024 win 4096 <mss 1460> 16:03:44.678931 193.203.186.200.1065 > 193.203.186.3.110: R 1785184788:1785184788(0) win 0 16:03:50.336391 193.203.186.3.110 > 193.203.186.200.1069: S 781952000:781952000(0) ack 1963384024 win 4096 <mss 1460> 16:03:50.336599 193.203.186.200.1065 > 193.203.186.3.110: R 1785184789:1785184789(0) win 0 16:04:02.337184 193.203.186.3.110 > 193.203.186.200.1069: S 781952000:781952000(0) ack 1963384024 win 4096 <mss 1460> 16:04:02.337390 193.203.186.200.1069 > 193.203.186.3.110: . ack 1 win 32120 (DF) 16:04:02.513209 193.203.186.3.110 > 193.203.186.200.1069: P 1:53(52) ack 1 win 4096 16:04:02.514666 193.203.186.200.1069 > 193.203.186.3.110: . ack 1 win 32120 (DF) 16:04:05.510888 193.203.186.200.1069 > 193.203.186.3.110: . ack 1 win 32120 (DF) 16:04:11.510906 193.203.186.200.1069 > 193.203.186.3.110: P 1:13(12) ack 53 win 32120 (DF) 16:04:11.538934 193.203.186.3.110 > 193.203.186.200.1069: P 53:87(34) ack 13 win 4096 16:04:11.540177 193.203.186.200.1069 > 193.203.186.3.110: P 1:13(12) ack 53 win 32120 (DF) 16:04:11.563289 193.203.186.3.110 > 193.203.186.200.1069: . ack 13 win 4096 16:04:23.530905 193.203.186.200.1069 > 193.203.186.3.110: P 1:13(12) ack 53 win 32120 (DF) 16:04:23.558068 193.203.186.3.110 > 193.203.186.200.1069: . ack 13 win 4096 16:04:30.345496 193.203.186.3.110 > 193.203.186.200.1069: P 53:87(34) ack 13 win 4096 16:04:30.345673 193.203.186.200.1069 > 193.203.186.3.110: P 13:27(14) ack 87 win 32120 (DF) 16:04:30.457017 193.203.186.3.110 > 193.203.186.200.1069: . ack 27 win 4096 16:04:30.951664 193.203.186.3.110 > 193.203.186.200.1069: P 87:131(44) ack 27 win 4096 16:04:30.970791 193.203.186.200.1069 > 193.203.186.3.110: P 13:27(14) ack 87 win 32120 (DF) 16:04:30.995768 193.203.186.3.110 > 193.203.186.200.1069: . ack 27 win 4096 16:04:33.961011 193.203.186.200.1069 > 193.203.186.3.110: . ack 87 win 32120 (DF) 16:04:57.960900 193.203.186.200.1069 > 193.203.186.3.110: . ack 131 win 32120 (DF) 16:05:45.960943 193.203.186.200.1069 > 193.203.186.3.110: P 27:33(6) ack 131 win 32120 (DF) 16:05:45.994151 193.203.186.3.110 > 193.203.186.200.1069: P 131:146(15) ack 33 win 4096 16:05:45.996284 193.203.186.200.1069 > 193.203.186.3.110: P 27:33(6) ack 131 win 32120 (DF) 16:05:46.021610 193.203.186.3.110 > 193.203.186.200.1069: . ack 33 win 4096 16:06:13.348688 193.203.186.3.110 > 193.203.186.200.1069: P 131:146(15) ack 33 win 4096 16:06:13.348912 193.203.186.200.1069 > 193.203.186.3.110: P 27:33(6) ack 131 win 32120 (DF) 16:06:13.371302 193.203.186.3.110 > 193.203.186.200.1069: . ack 33 win 4096 16:07:08.351909 193.203.186.3.110 > 193.203.186.200.1069: P 131:146(15) ack 33 win 4096 16:07:08.352127 193.203.186.200.1069 > 193.203.186.3.110: P 33:39(6) ack 146 win 32120 (DF) 16:07:08.384652 193.203.186.3.110 > 193.203.186.200.1069: P 146:179(33) ack 39 win 4096 16:07:08.400792 193.203.186.200.1069 > 193.203.186.3.110: . ack 146 win 32120 (DF) 16:08:12.460794 193.203.186.3.110 > 193.203.186.200.1069: P 146:938(792) ack 39 win 4096 16:08:12.467702 193.203.186.200.1069 > 193.203.186.3.110: . ack 146 win 32120 (DF) 16:09:08.976506 193.203.186.3.110 > 193.203.186.200.1069: FP 938:1001(63) ack 39 win 4096 16:09:08.976750 193.203.186.200.1069 > 193.203.186.3.110: . ack 179 win 32120 (DF) 16:09:08.977901 193.203.186.200.1069 > 193.203.186.3.110: P 39:47(8) ack 938 win 32120 (DF) 16:09:09.003752 193.203.186.3.110 > 193.203.186.200.1069: R 781952938:781952938(0) win 0
And net config options.. CONFIG_PACKET=y CONFIG_NETLINK=y CONFIG_RTNETLINK=y CONFIG_NETLINK_DEV=y CONFIG_FIREWALL=y CONFIG_NET_ALIAS=y CONFIG_FILTER=y CONFIG_UNIX=y CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_IP_FIREWALL=y CONFIG_IP_FIREWALL_NETLINK=y CONFIG_NETLINK_DEV=y CONFIG_IP_TRANSPARENT_PROXY=y CONFIG_IP_ALWAYS_DEFRAG=y CONFIG_IP_MASQUERADE=y CONFIG_IP_MASQUERADE_ICMP=y CONFIG_IP_MASQUERADE_IPAUTOFW=m CONFIG_IP_MASQUERADE_IPPORTFW=m CONFIG_NET_IPIP=m CONFIG_IP_MROUTE=y CONFIG_IP_ALIAS=y CONFIG_ARPD=y CONFIG_SYN_COOKIES=y CONFIG_INET_RARP=y CONFIG_IP_NOSR=y CONFIG_SKB_LARGE=y CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y CONFIG_BLK_DEV_SR=y CONFIG_BLK_DEV_SR_VENDOR=y CONFIG_CHR_DEV_SG=y CONFIG_SCSI_MULTI_LUN=y CONFIG_SCSI_AIC7XXX=y CONFIG_OVERRIDE_CMDS=y CONFIG_NETDEVICES=y CONFIG_DUMMY=m CONFIG_EQUALIZER=m CONFIG_ETHERTAP=m CONFIG_NET_ETHERNET=y CONFIG_NET_ISA=y CONFIG_NE2000=y CONFIG_PLIP=m CONFIG_PPP=m CONFIG_SLIP=m CONFIG_SLIP_COMPRESSED=y CONFIG_SLIP_SMART=y CONFIG_SLIP_MODE_SLIP6=y CONFIG_ISDN=m CONFIG_ISDN_PPP=y CONFIG_ISDN_PPP_VJ=y CONFIG_ISDN_MPP=y CONFIG_ISDN_AUDIO=y CONFIG_ISDN_DRV_LOOP=m CONFIG_ISDN_DRV_HISAX=m CONFIG_HISAX_EURO=y CONFIG_DE_AOC=y CONFIG_HISAX_16_3=y
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