[chord] question about chord

David Nguyen d-nguyen2 at northwestern.edu
Tue Jan 6 16:34:14 EST 2004


Hi,

my name is david nguyen, i've emailed a couple times before since we are
just trying
to see how chord works as part of a class study.  I'm a second year graduate
student
in computer engineering and this work is solely for the class, not personal
research.

i had two nodes running chord but was wondering what some of the status
messages
mean.  I understand the ID's and finger table and successor ideas from teh
Chord paper
but was wondering what the end of this logfile (that i created) means:
starting at line  ***********CARDINAL JOINS TRUNKS*************

also, for dhash, is there a paper you could point us to such that we get a
better
idea of what is going on?

Thanks so much,
-dave

----------------------------------------------------------------------------
---------
[root at localhost lsd]# ./lsd -j 192.168.1.2:10001 -p 10001
=== Configurator::dump
chord.find_succlist_shaving 1
chord.greedy_lookup 0
chord.max_vnodes 1024
chord.ncoords 3
chord.npred 1
chord.nsucc 16
chord.rpc_mode "stp"
debruijn.logbase 1
dhash.dfrags 7
dhash.efrags 14
dhash.missing_outstanding_max 15
dhash.mtu 1210
dhash.sync_timer 30
dhashcli.order_successors 1
locationtable.maxcache 208
merkle.keyhash_timer 10
merkle.prt_timer 5
merkle.replica_timer 300
chord: running on 192.168.1.2:10001
lsd: CREATED RPC MANAGER
lsd: lsd: created new dhash
1073331892:694294: creating new vnode:
25002844dd6f071a90167950bce5e2e933870c86
lsd:  1073331892:694350 coords are: -950895 -347863 652147
1073331892:694470 myID is 25002844dd6f071a90167950bce5e2e933870c86
lsd: chord::handleProgram: 344447
lsd: chord::handleProgram: 344454
25002844dd6f071a90167950bce5e2e933870c86: estimating total number of nodes
as 1
25002844dd6f071a90167950bce5e2e933870c86: stabilize_finger: findsucc of
finger 1
lsd: chord::handleProgram: 344450
lsd: chord::handleProgram: 344449
lsd: lsd starting up at Mon Jan  5 13:44:52 2004
lsd:  running with options:
lsd:   IP/port: 192.168.1.2:10001
lsd:   vnodes: 1
lsd:   lookup_mode: 1
lsd:   ss_mode: 0
1073331892:750476 REXMIT 1886178306 rexmits 0, timeout 5 ms, destined for
192.168.1.2
1073331892:750574 REXMIT 4242905776 rexmits 0, timeout 5 ms, destined for
192.168.1.2
1073331892:750625 REXMIT 846015858 rexmits 0, timeout 5 ms, destined for
192.168.1.2
1073331892:750669 REXMIT 3158642497 rexmits 0, timeout 5 ms, destined for
192.168.1.2
lsd: changing nameserver to 0.0.0.0
1073331895:859679 25002844dd6f071a90167950bce5e2e933870c86: stabilize:
stable! stabilize timer 1000
25002844dd6f071a90167950bce5e2e933870c86: my successor changed from
25002844dd6f071a90167950bce5e2e933870c86 to 49edb4665fcc7787ac1d11b3d3cf
   7dd1787dd6d9

*******CARDINAL JOINS TRUNKS*******
25002844dd6f071a90167950bce5e2e933870c86: estimating total number of nodes
as 6
25002844dd6f071a90167950bce5e2e933870c86: stabilize_finger: findsucc of
finger 1
25002844dd6f071a90167950bce5e2e933870c86: stabilize_finger: findsucc of
finger 158
1073331920:929677 25002844dd6f071a90167950bce5e2e933870c86: stabilize:
stable! stabilize timer 1600
1073335064:979685 REXMIT 794405545 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073335064:979815 REXMIT 2371499125 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073335340:549677 REXMIT 708308122 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073335340:549805 REXMIT 889207735 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073349210:389773 REXMIT 698669136 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073355014:139681 REXMIT 3808437255 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073355014:139790 REXMIT 1974313820 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073360456:749827 REXMIT 3978217233 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073360456:749941 REXMIT 1786272656 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073363545:019683 REXMIT 313621822 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073418747:989684 REXMIT 2264650877 rexmits 0, timeout 5 ms, destined for
192.168.1.3
1073418747:989816 REXMIT 2023465229 rexmits 0, timeout 5 ms, destined for
192.168.1.3



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