cdcc RTTs in FreeBSD Jails

Andy Hilker ah@cryptobank.de
Tue Jun 1 16:40:37 UTC 2004


Hi,

> If you see fewer than 12 NOPs and if you have dcc{1,2,3,4,5}.dcc-servers.net
> in your map.txt file, then I would check your DNS resolver.  Does
> `nslookup` or `host` find 16 A RRs for dcc.dcc-servers.net,
> dcc1.dcc-servers.net, dcc3.dcc-servers.net, dcc4.dcc-servers.net, and 
> dcc5.dcc-servers.net.  Do you see 7 A RRs for dcc2.dcc-servers.net?
>
> What happens if you try the command `cdcc "host x.y.z.w; stats"`
> for various IP addresses x.y.z.w?

Yes, see below for details. All looks fine but "cdcc info" etc.
Also i am pretty sure resolver is working cause there are no other
problems.  Even if i use IP addresses in map.txt, behaviour is
consistent.

I could make (nearly) every server working by putting it on top of
map.txt. But only the first entry in map.txt generates a udp packet
(and gets a reply).

Any other idea or hint, what i could try?

bye,
Andy


--- snip: map.txt ---

# i added IPs and change the order, but with original file i have the same behaviour
# public DCC servers
212.203.14.116
153.19.44.252
136.199.8.61
dcc2.dcc-servers.net
dcc4.dcc-servers.net
dcc3.dcc-servers.net
dcc1.dcc-servers.net
dcc5.dcc-servers.net

--- snip: map.txt ---



$cdcc "load map.txt" output (jail)            
-----------------------------------
# 06/01/04 18:26:27 CEST  /usr/local/dcc/map
# Re-resolve names after 20:26:27  Check RTTs after 18:41:27
# 12 total, 1 working servers
IPv6 off

212.203.14.116,-            anon
# * 212.203.14.116,-                                        EATSERVER ID 1166
#     100% of  3 requests ok   61.08 ms RTT             43 ms queue wait

153.19.44.252,-             anon
#   153.19.44.252,-                                 
#      not answering

136.199.8.61,-              anon
#   136.199.8.61,-                                  
#      not answering

dcc2.dcc-servers.net,-      anon
#   198.137.254.27,-                                
#      not answering
#   209.157.153.22,-                                
#      not answering

dcc4.dcc-servers.net,-      anon
#   137.118.60.88,-                                 
#      not answering
#   207.195.195.223,-                               
#      not answering

dcc3.dcc-servers.net,-      anon
#   194.109.153.82,-                                
#      not answering
#   203.147.165.193,-                               
#      not answering

dcc1.dcc-servers.net,-      anon
#   152.20.240.35,-                                 
#      not answering

dcc5.dcc-servers.net,-      anon
#   194.85.132.210,-                                
#      not answering
#   212.95.66.24,-                                  
#      not answering




host ... output (jail)
-----------------------
# host dcc.dcc-servers.net      
dcc.dcc-servers.net is a nickname for dcc1.dcc-servers.net
dcc1.dcc-servers.net has address 194.109.153.82
dcc1.dcc-servers.net has address 194.85.132.210
dcc1.dcc-servers.net has address 203.147.165.193
dcc1.dcc-servers.net has address 204.152.184.184
dcc1.dcc-servers.net has address 205.166.61.174
dcc1.dcc-servers.net has address 207.195.195.223
dcc1.dcc-servers.net has address 208.201.249.232
dcc1.dcc-servers.net has address 208.201.249.233
dcc1.dcc-servers.net has address 212.69.217.26
dcc1.dcc-servers.net has address 212.95.66.24
dcc1.dcc-servers.net has address 216.240.97.12
dcc1.dcc-servers.net has address 216.244.192.216
dcc1.dcc-servers.net has address 62.75.136.220
dcc1.dcc-servers.net has address 137.118.60.88
dcc1.dcc-servers.net has address 142.27.70.214
dcc1.dcc-servers.net has address 152.20.240.35

# host dcc2.dcc-servers.net     
dcc2.dcc-servers.net has address 38.144.80.234
dcc2.dcc-servers.net has address 80.69.8.186
dcc2.dcc-servers.net has address 153.19.44.252
dcc2.dcc-servers.net has address 194.119.212.5
dcc2.dcc-servers.net has address 198.137.254.27
dcc2.dcc-servers.net has address 209.157.153.22
dcc2.dcc-servers.net has address 212.203.14.116


cdcc host ... stats (jail)
----------------------------
# cdcc "host 212.95.66.24; stats" 
212.95.66.24,6277
        server-ID 1179  18:35:18
    version 1.2.38  tracing ANON CLNT 
23003133 hash entries 17809150 used 687216492 DB bytes
  234 ms delay  853482 NOPs  139 ADMN  11291 query  >10400 clients since 00:01:17
 557375 reports    2161>10    1768>100    1760>1000    1760 many
        answers  200172>10  165202>100  137748>1000  119276 many
    0 bad IDs    0 passwds  13 error responses 81648 retransmitted
    0 answers rate-limited 16984 anonymous           0 rejected reports
    flood on   4 streams   2 out active 2 in 2036514 total flooded in
1214418 accepted   0 stale 821674 dup      0 white    0 delete
1698781 reports added between Jun 01 00:01:17.482341 CEST and Jun 01 18:35:18


# cdcc "host 152.20.240.35; stats"
152.20.240.35,6277
        server-ID 1201  18:35:28
    version 1.2.48  tracing ANON CLNT 
60997629 hash entries 45476166 used 1635585816 DB bytes
  103 ms delay  661067 NOPs  85 ADMN  83464 query  >10400 clients since 20:00:11
3528080 reports   16909>10   12086>100   11406>1000   11406 many
        answers 1410373>10 1221941>100 1008266>1000  856857 many
    0 bad IDs    0 passwds  73 error responses 18508 retransmitted
    0 answers rate-limited   0 anonymous           0 rejected reports
    flood on   3 streams   3 out active 3 in 1928585 total flooded in
1044620 accepted   0 stale 883483 dup      0 white    0 delete
4610784 reports added between May 31 20:00:11.541811 EDT and Jun 01 12:35:28






More information about the DCC mailing list

Contact vjs@rhyolite.com by mail or use the form.