Messages in this thread |  | | Date | Sat, 25 Jan 1997 23:41:04 -0500 (EST) | From | "Richard B. Johnson" <> |
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I installed a new BusLogic SCSI Controller. It seems to work excellent. All of the SCSI problems I had are now gone. Great! But.... Now another problem just started. Something very bad is happening to my network connectivity. Attempting to log in to my own system using rlogin rsh or telnet after the system has been up for about 24 hours has become impossible. I can ping the node and I can finger it. However, rlogin reports "endpoint disconnected" and sometimes "connection reset by peer". Telnet reports "connection refused".
I can still log in locally and everything seems quiet. Top shows no activity, there is plenty of RAM and all the network daemons are running.
netstat -c shows no network activity. cat /proc/net/arp shows a few entries from my name server and the hosts that tried to log in (normal).
But .... cat /proc/net/rt_cache >/tmp/xxx.xxx creates a file that is over 330,000 bytes in length! with mostly the same entries like:
Iface Destination Gateway Flags RefCnt Use Metric Source MTU Window IRTT TOS HHRef HHUptod SpecDst Hash eth0 EC28B2CC EC28B2CC 0 1 8 0 E028B2CC 1500 0 300 00 2 1 E028B2CC 1D eth0 FF2FB2CC FF2FB2CC 94011000 0 1 0 C028B2CC 1500 0 300 00 -1 0 E028B2CC 38 eth0 FF2FB2CC FF2FB2CC 94011000 0 1 0 C429B2CC 1500 0 300 00 -1 0 E028B2CC 3D eth0 D228B2CC D228B2CC 0 0 14 0 E028B2CC 1500 0 300 00 3 1 E028B2CC 48 eth0 FF2FB2CC FF2FB2CC 94011000 0 3 0 AD2BB2CC 1500 0 300 00 -1 0 E028B2CC 56 [SNIPPED THOUSANDS OF LINES!!!]
I would guess that something here should be expiring and it isn't, so the cache gets full. Note that the destination is a Gateway (correct), but maybe something wasn't well tested under these conditions because destinations are usually hosts..... Maybe this makes a difference about cache expiration which I don't think it should.
I haven't a clue why this would start after I installed a new SCSI controller.
This is /proc/interrupts just after rebooting...
0: 42117 timer 1: 2 keyboard 2: 0 cascade 5: 4274 NE2000 9: 4435 + BusLogic BT-958 <---- New controller 13: 1 math error
/proc/net/dev
Inter-| Receive | Transmit face |packets errs drop fifo frame|packets errs drop fifo colls carrier lo: 28 0 0 0 0 28 0 0 0 0 0 tunl0: 0 0 0 0 0 0 0 0 0 0 0 tunl1: 0 0 0 0 0 0 0 0 0 0 0 eth0: 4566 0 0 0 0 1202 0 0 0 0 0
/proc/ioports
0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : npu 02f8-02ff : serial(auto) 0300-031f : NE2000 0378-037f : lp 03c0-03df : vga+ 03f0-03f5 : floppy 03f7-03f7 : floppy DIR 03f8-03ff : serial(auto) fccc-fccf : BusLogic BT-958 <---- New controller.
Cheers, Dick Johnson -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Richard B. Johnson Project Engineer Analogic Corporation Voice : (508) 977-3000 ext. 3754 Fax : (508) 532-6097 Modem : (508) 977-6870 Ftp : ftp@boneserver.analogic.com Email : rjohnson@analogic.com, johnson@analogic.com Penguin : Linux version 2.1.21 on an i586 machine (66.15 BogoMips). Warning : It's hard to remain at the trailing edge of technology. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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