/proc/net/* read drops data (was: lost socket)

[Ricky Beam]

On Wed, 27 Aug 2003, Ricky Beam wrote:
>This smells like a simple "off by one" bug, but I've been too busy to go
>look at the code.

Ah hah!  it's a block size problem... netstat reads 1024 at a time.

Using dd...

[root:pts/5{9}]gir:~/[7:55pm]:dd if=/proc/net/udp bs=1024 | wc
2+1 records in
2+1 records out
     18     216    2304
[root:pts/5{9}]gir:~/[7:56pm]:dd if=/proc/net/udp bs=2048 | wc
1+1 records in
1+1 records out
     19     228    2432
[root:pts/5{9}]gir:~/[7:56pm]:dd if=/proc/net/udp bs=4096 | wc
0+1 records in
0+1 records out
     20     240    2560
[root:pts/5{9}]gir:~/[7:56pm]:dd if=/proc/net/udp bs=8192 | wc
0+1 records in
0+1 records out
     20     240    2560
[root:pts/5{9}]gir:~/[7:56pm]:dd if=/proc/net/udp bs=32768 | wc
0+1 records in
0+1 records out
     20     240    2560
[root:pts/5{9}]gir:~/[7:56pm]:dd if=/proc/net/udp bs=1 | wc
2432+0 records in
2432+0 records out
     19     228    2432

--Ricky


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