Date: Fri, 20 Mar 1998 00:38:08 -0500 (EST) From: Becca Anderson <becca@worldint.com> To: David Greenman <dg@root.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: TCP/IP Problems Message-ID: <Pine.BSF.3.91.980320002802.15396A-100000@win3.worldint.com> In-Reply-To: <199803182056.MAA29364@implode.root.com>
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On Wed, 18 Mar 1998, David Greenman wrote:
> >I'm have a machine that is setting on my isp's backbone
> >(PP200/128MB/FreeBSD2.2.5/Intel EtherExpress Pro/100B) running apache.
> >Connections from users with a fast connection (128K or better) seem fine,
> >however, slower users have difficulty getting files > 16k via ftp or
> >http. I have tcp_extensions turned off. It looks like the machine sends
> >around 10k of data then the connection hangs until the other side times out.
> >DNS is working correctly. I'm lost.
>
> Can you provide the output of a 'netstat -i' on "deepthroat" as well as
> the equivilent on the router it is connected to? Also, how many mbuf
> clusters have you configured the kernel for? What does 'netstat -m' show?
>
> -DG
>
> David Greenman
> Core-team/Principal Architect, The FreeBSD Project
>
Actually, I was wrong about the mbufs in the kernel. I have it
configured for 4096. My isp won't give me the netstat from the router.
They claimed that they did tests and didn't see any dropped packets to
our server. Tonight I did some more test and dumped the backets and got
this message (on the receiving machine) when the file transfer stopped at
10k.
23:28:07.039841 O 60 03 0021: tsf1.lv.gle.verio.net >
devel.worldint.com: icmp
: source quench (DF) (ttl 252, id 53327)
Here's the netstat's from the server tonight:
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
fxp0 1500 <Link> 00.a0.c9.9a.c0.d9 180483 0 186126 0 62241
fxp0 1500 209.69.145.12 209.69.145.130 180483 0 186126 0 62241
fxp0 1500 209.69.145.13 209.69.145.131 180483 0 186126 0 62241
fxp0 1500 209.69.145.13 209.69.145.132 180483 0 186126 0 62241
fxp0 1500 209.69.145.15 209.69.145.157 180483 0 186126 0 62241
lp0* 1500 <Link> 0 0 0 0 0
lo0 16384 <Link> 26075 0 26075 0 0
lo0 16384 127 127.0.0.1 26075 0 26075 0 0
77 mbufs in use:
65 mbufs allocated to data
5 mbufs allocated to packet headers
6 mbufs allocated to protocol control blocks
1 mbufs allocated to socket names and addresses
64/128 mbuf clusters in use
265 Kbytes allocated to network (51% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
Our isp did swap out our network cable and moved us to a different port
on the hub to see if that would clear it up, but it didn't change anything.
------------------------------------------------------------------------------
Becca Anderson (becca@worldint.com)
"Oh, that feels neat!" :)
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