First of all a VERY BIG THANK YOU.
I'm experimenting with pvfs2 and are very impressed of what can be done
with it, installation/performance wise. Even I can do it. :-)
A) 3 machines are meta-server io-server and client
copy from pvfs-fs to local-fs
0.82user 36.30system 12:31.70elapsed 4%CPU (0avgtext+0avgdata
0maxresident)k0inputs+0outputs (18major+710minor)pagefaults 0swaps
B) from pvfs-fs to same pvfs-fs with other file-name
1.13user 36.09system 18:29.67elapsed 3%CPU (0avgtext+0avgdata
0maxresident)k0inputs+0outputs (1major+205minor)pagefaults 0swaps
C) 1st 'external-client' not being part as io-server or whatever
copy from pvfs-fs to local-fs
0.00user 26.15system 2:14.80elapsed 19%CPU (0avgtext+0avgdata
0maxresident)k0inputs+0outputs (0major+1228minor)pagefaults 0swaps
D) 1st and 2nd 'external-client' not being part as io-server or whatever
simultaneous copy same-file from pvfs-fs to their own local-fs
0.00user 18.16system 3:30.86elapsed 8%CPU (0avgtext+0avgdata
0maxresident)k0inputs+0outputs (2major+1225minor)pagefaults 0swap
E) 1st and 2nd 'external-client' not being part as io-server or whatever
simultaneous copy same-file from local to pvfs-fs with different name
0.00user 22.58system 3:19.63elapsed 11%CPU (0avgtext+0avgdata
0maxresident)k0inputs+0outputs (3major+1224minor)pagefaults 0swaps
F) 1st 'external-client' not being part as io-server or whatever
copy from pvfs-fs to pvfs-fs with different name
0.00user 18.16system 3:30.86elapsed 8%CPU (0avgtext+0avgdata
0maxresident)k0inputs+0outputs (2major+1225minor)pagefaults 0swaps
Physically the result of B) and F) is the same, a copy is made on the
pvfs-fs. The needed time however is the difference between day and night.
Throughput in these cases varies between 7.5MB/s and > 100MB/s, pretty
close to what 1Gb network can do.
King regards
Henk Schoneveld
_______________________________________________
Pvfs2-users mailing list
[email protected]
http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
