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Date: Mon, 22 Nov 1999 10:52:48 -0500 (EST)
From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
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To: John Polstra <jdp@polstra.com>
Cc: current@FreeBSD.ORG
Subject: RE: Route table leaks
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<<On Sun, 21 Nov 1999 19:58:40 -0800 (PST), John Polstra <jdp@polstra.com> said:

>> [quoting me:]
>> What does `netstat -ran' say?  You're not seeing all the routes
>> without the `-a' flag.

> It lists some additional routes with -a, but not many.  Here's the
> latest output (still growing, as you can see):

> cvsup-master# vmstat -m | grep 'routetbl '
>      routetbl   822   115K    115K 21221K     2669    0     0  16,32,64,128,256

Hmmm.  On one of my machines:

Memory statistics by type                          Type  Kern
        Type  InUse MemUse HighUse  Limit Requests Limit Limit Size(s)
     routetbl   171    24K    184K 10366K   976273    0     0  16,32,64,128,256

Looks fine.  Another machine says:

     routetbl  2755   384K    394K 42708K   928043    0     0  16,32,64,128,256

It also tells me:

root@xyz(49)$ netstat -ran | wc -l
     118
root@xyz(50)$ netstat -ran | fgrep default
default            18.24.10.3         UGc        25    13963      ti0
root@xyz(51)$ netstat -f inet -n | wc -l
    1331

Now things start to make sense:

root@xyz(55)$ netstat -f inet -n | fgrep CLOSING | wc -l
    1287

(this machine still has the bug that Jonathan Lemon fixed).  Now it's
clear what's going on.  The ``missing'' routes have been deleted from
the routing table, but have not yet been freed because these old PCBs
still hold a reference.

-GAWollman

--
Garrett A. Wollman   | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu  | O Siem / The fires of freedom 
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA|                     - Susan Aglukark and Chad Irschick


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