[Bismark-devel] smoketest #6 of cerowrt is go for testing

[Bismark-devel] smoketest #6 of cerowrt is go for testing

[Dave Taht]

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GET IT AT:

http://huchra.bufferbloat.net/~cerowrt/cerowrt-wndr3700/


Noted thus far:

0) We have a priority 3 issue with ntp starting up. NTP times out too early
it keeps restarting, and restarting, and restarting... (it's on a 10 second
timer) This is related to the dnssec issue I'm well aware of. It looks like
60 second timer would work better)

(dnssec IS disabled by default in this build, so ntp isn't even needed
and does eventually get the correct time if you kill off named.montime - and
the right answer is to patch ntp to just issue the first queries for

ntp -g option

with the auth-needed bit off... I have NO idea how to do that with dnssec.

ntp even tries ipv6 but doesn't get out of gatech... (gatech's problem, not
me, I hope!)

oot@OpenWrt:/etc/xinetd.d# ntpdc -n -p
     remote           local      st poll reach  delay   offset    disp
=======================================================================
=69.167.160.102  192.168.22.222   2   64  377 0.05031 -0.001173 0.05679
=207.171.17.42   192.168.22.222  16 1024    0 0.00000  0.000000 3.99217
=66.96.110.10    192.168.22.222   2   64  377 0.07285 -0.004067 0.04944
=2001:1868:213:5 2002:82cf:6116: 16 1024    0 0.00000  0.000000 3.99217
=2001:470:8c8e:0 2002:82cf:6116: 16 1024    0 0.00000  0.000000 3.99217
=173.203.122.111 192.168.22.222   3   64  377 0.04329 -0.004989 0.06305
*66.228.39.48    192.168.22.222   2   64  377 0.02226 -0.003478 0.03444



1) uftp: built, entirely untested

2) netserver: small bug in xinetd - wrong directory for it, had to move it:

root@OpenWrt:/etc/xinetd.d# mv ../xinet.d/netserver .

(hint: I am too tired and dangers to fix this in git myself)

d@cruithne:~$ netperf 172.30.42.33
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to localhost
(127.0.0.1) port 0 AF_INET
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    10.00    10394.62


3) And ditg guys.? THANK YOU  FOR THE FLASH!

With a full build with all the major extra tools installed (your new stuff,
plus bismark, plus openvpn and iperf), flash requirements have been reduced
by nearly 8% from the last build, thanks to your work. THANK YOU.

/dev/root                14848     10028      4820  68% /
tmpfs                    30888       436     30452   1% /tmp
tmpfs                      512         0       512   0% /dev


4) Debloat: disabled. We ran into a problem with reducing buffers via
ethtool to low levels on the gige port. It would get 'stuck' after 7 packets
or so, when the ge00 driver was reduced to 4 packets.

so that portion of the debloating stuff is *entirely disabled* right now.

I'm bugged we had to do this for this smoke test, and I intend to fix it as
soon as I have some brain cells in the morning. Since we now have a
reproducable test case for the problem, we're in great shape, for that, or
so I hope.

I'm goin to bed.

please test web, polipo, wired, wireless, encrypted wireless, 5 ghz, 2.4ghz,
the internet, ipv6, your tools, my tools, whatever you can think of, AND
FILE BUGS, and let me know if any other kittens are eaten by 1PM saturday
afternoon EST, at which I'm hoping to pull together RC-1 for wider use.

Thanks for the smoketesting.


-- 
Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608
http://the-edge.blogspot.com

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Re: [Bismark-devel] smoketest #6 of cerowrt is go for testing

[Rick Jones]

> 2) netserver: small bug in xinetd - wrong directory for it, had to move it:
>
> root@OpenWrt:/etc/xinetd.d# mv ../xinet.d/netserver .
>
> (hint: I am too tired and dangers to fix this in git myself)
>
> d@cruithne:~$ netperf 172.30.42.33
> MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
> localhost (127.0.0.1) port 0 AF_INET
> Recv   Send    Send
> Socket Socket  Message  Elapsed
> Size   Size    Size     Time     Throughput
> bytes  bytes   bytes    secs.    10^6bits/sec
>
>   87380  16384  16384    10.00    10394.62

Notice that the test banner talks about going to 127.0.0.1 rather than 
172.40.42.33 - this stems from missing the -H required in front of the 
IP address.  The command line should be:

netperf -H  172.30.42.33

happy benchmarking,

rick jones

Re: [Bismark-devel] smoketest #6 of cerowrt is go for testing

[Rick Jones]

>
> ntpd doesn't request dnssec verification -- it simply uses the
> provided getaddrinfo().  Any tweaking of the resolver to avoid
> requiring DNSSEC validation of queries will be outside the ntpd source
> code.
>

If you configure ntpd with bare IP addresses rather than names, will the 
getaddrinfo() return without attempting any DNS in the first place?

rick jones

Re: [Bismark-devel] smoketest #6 of cerowrt is go for testing

[Dave Hart]

On Sun, Jul 17, 2011 at 00:02 UTC, Rick Jones <rick.jones2@hp.com> wrote:
> If you configure ntpd with bare IP addresses rather than names, will the
> getaddrinfo() return without attempting any DNS in the first place?

Yes, basically.  ntpd might not even call getaddrinfo() in that case
(it may use inet_pton() or similar to convert the IP address to binary
representation).  At any rate, using only numeric IPv4 or IPv6
addresses will avoid any DNS lookups.

Cheers,
Dave Hart