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List:       linux-kernel
Subject:    Forwarded mail....
From:       Paul Wouters <paul () xtdnet ! nl>
Date:       1996-11-13 14:37:47
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I am getting lots of problems with the file table getting full. This
happens on a machine with pretty recent libraries and all, running
Xfree 3.2 (xdm). Upgrading to 2.0.25 didn't help.

It seems that for all kills of xdm (which just starts netscape without
any window manager ;) the TCP connections are closed, but the file
descriptor stays reserved. Ie. The connections stay in the CLOSED state.
a Partial netstat -a output:

Active Internet connections (including servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      2 localhost:1535          localhost:6325          CLOSE       
tcp        0      2 localhost:1534          localhost:6325          CLOSE       
tcp        0      2 localhost:1533          localhost:6325          CLOSE       
tcp        0      2 localhost:1532          localhost:6325          CLOSE       
tcp        0      2 localhost:1531          localhost:6325          CLOSE       
tcp        0      2 localhost:1530          localhost:6325          CLOSE       
tcp        0      2 localhost:1529          localhost:6325          CLOSE       
tcp        0      2 localhost:1528          localhost:6325          CLOSE       
tcp        0      2 localhost:1527          localhost:6325          CLOSE       
tcp        0      2 localhost:1526          localhost:6325          CLOSE       
tcp        0      2 localhost:1525          localhost:6325          CLOSE       
tcp        0      2 localhost:ingreslock    localhost:6325          CLOSE       
tcp        0      2 localhost:1523          localhost:6325          CLOSE       
tcp        0      0 chef:1266               fm1.internation.co.:www ESTABLISHED 
tcp        0      2 localhost:1521          localhost:6325          CLOSE       
tcp        0      0 chef:1264               fm1.internation.co.:www ESTABLISHED 
tcp        0      2 localhost:1519          localhost:6325          CLOSE       
tcp        0      2 localhost:1518          localhost:6325          CLOSE       
tcp        0      2 localhost:1517          localhost:6325          CLOSE       
tcp        0      2 localhost:1516          localhost:6325          CLOSE       
tcp        0      2 localhost:1515          localhost:6325          CLOSE       
tcp        0      2 localhost:1514          localhost:6325          CLOSE       
tcp        0      2 localhost:1513          localhost:6325          CLOSE

This goes on and on and. Note that the connection to fm1.internation.co.uk 
was made with about 10 xdm/netscape sessions ago. 

>From proc:
~#> cat /proc/sys/kernel/file-max
1024
~#> cat /proc/sys/kernel/file-nr 
704
~#>

So, after a while the file table is full and the machine has to be rebooted.

Paul



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