[sheepdog-users] Corosync Vs. Zookeeper

[Aydelott, Ryan M.]

re: syntax of /meta and /meta, - thanks for the pointer we started using all of the disks for objects - rerunning the performance tests however yielded the same results - are there any other suggestions here?

Node 0..19:
 0      13 GB   24 MB   13 GB     0%    /meta/obj

to:

Node 0..19:
 0      446 GB  0.0 MB  446 GB    0%    /var/lib/sheepdog/disc0
 1      443 GB  0.0 MB  443 GB    0%    /var/lib/sheepdog/disc1
 2      449 GB  104 MB  448 GB    0%    /var/lib/sheepdog/disc10
 3      441 GB  0.0 MB  441 GB    0%    /var/lib/sheepdog/disc11
 4      445 GB  0.0 MB  445 GB    0%    /var/lib/sheepdog/disc12
 5      441 GB  0.0 MB  441 GB    0%    /var/lib/sheepdog/disc13
 6      448 GB  0.0 MB  448 GB    0%    /var/lib/sheepdog/disc2
 7      449 GB  0.0 MB  449 GB    0%    /var/lib/sheepdog/disc3
 8      445 GB  0.0 MB  445 GB    0%    /var/lib/sheepdog/disc4
 9      457 MB  0.0 MB  457 MB    0%    /var/lib/sheepdog/disc6
10      445 GB  0.0 MB  445 GB    0%    /var/lib/sheepdog/disc7
11      440 GB  0.0 MB  440 GB    0%    /var/lib/sheepdog/disc8
12      450 GB  0.0 MB  450 GB    0%    /var/lib/sheepdog/disc9

However it should be noted that the process is still listed as meta with the space (which is probably what caused me to deviate in the first place)

 2093 ?        Sl     0:46 sheep -n -c corosync:172.21.5.0 /meta /var/lib/sheepdog/disc0,/var/lib/sheepdog/disc1,/var/lib/sheepdog/disc2,/var/lib/sheepdog/disc3,/var/lib/sheepdog/disc4,/var/lib/sheepdog/disc5,/var/lib/sheepdog/disc6,/var/lib/sheepdog/disc7,/var/lib/sheepdog/disc8,/var/lib/sheepdog/disc9,/var/lib/sheepdog/disc10,/var/lib/sheepdog/disc11,/var/lib/sheepdog/disc12,/var/lib/sheepdog/disc13
 2094 ?        Ss     0:00 sheep -n -c corosync:172.21.5.0 /meta /var/lib/sheepdog/disc0,/var/lib/sheepdog/disc1,/var/lib/sheepdog/disc2,/var/lib/sheepdog/disc3,/var/lib/sheepdog/disc4,/var/lib/sheepdog/disc5,/var/lib/sheepdog/disc6,/var/lib/sheepdog/disc7,/var/lib/sheepdog/disc8,/var/lib/sheepdog/disc9,/var/lib/sheepdog/disc10,/var/lib/sheepdog/disc11,/var/lib/sheepdog/disc12,/var/lib/sheepdog/disc13

rerunning the tests show that the performance is still the same with zookeeper:


        Run began: Tue Mar 18 18:32:40 2014

        Record Size 128 KB
        File size set to 20971520 KB
        Command line used: iozone -i0 -i1 -t 1 -r 128#k -s 20G
        Output is in Kbytes/sec
        Time Resolution = 0.000001 seconds.
        Processor cache size set to 1024 Kbytes.
        Processor cache line size set to 32 bytes.
        File stride size set to 17 * record size.
        Throughput test with 1 process
        Each process writes a 20971520 Kbyte file in 128 Kbyte records

        Children see throughput for  1 initial writers  =   41336.98 KB/sec
        Parent sees throughput for  1 initial writers   =   39010.99 KB/sec
        Min throughput per process                      =   41336.98 KB/sec 
        Max throughput per process                      =   41336.98 KB/sec
        Avg throughput per process                      =   41336.98 KB/sec
        Min xfer                                        = 20971520.00 KB

        Children see throughput for  1 rewriters        =   43703.66 KB/sec
        Parent sees throughput for  1 rewriters         =   41149.12 KB/sec
        Min throughput per process                      =   43703.66 KB/sec 
        Max throughput per process                      =   43703.66 KB/sec
        Avg throughput per process                      =   43703.66 KB/sec
        Min xfer                                        = 20971520.00 KB
   
        Children see throughput for  1 readers          =   63503.92 KB/sec
        Parent sees throughput for  1 readers           =   63502.66 KB/sec
        Min throughput per process                      =   63503.92 KB/sec 
        Max throughput per process                      =   63503.92 KB/sec
        Avg throughput per process                      =   63503.92 KB/sec
        Min xfer                                        = 20971520.00 KB

        Children see throughput for 1 re-readers        =   63532.20 KB/sec
        Parent sees throughput for 1 re-readers         =   63531.88 KB/sec
        Min throughput per process                      =   63532.20 KB/sec 
        Max throughput per process                      =   63532.20 KB/sec
        Avg throughput per process                      =   63532.20 KB/sec
        Min xfer                                        = 20971520.00 KB



iozone test complete.





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