linode

Performance testing my linode before / after upgrade to SSD


Current old linode speeds are

# for i in 1 2 3; do hdparm -tT /dev/xvda; done

/dev/xvda:
 Timing cached reads:   10122 MB in  1.99 seconds = 5091.02 MB/sec
 Timing buffered disk reads:  652 MB in  3.01 seconds = 216.83 MB/sec

/dev/xvda:
 Timing cached reads:   10670 MB in  1.99 seconds = 5368.19 MB/sec
 Timing buffered disk reads:  792 MB in  3.00 seconds = 263.63 MB/sec

/dev/xvda:
 Timing cached reads:   8880 MB in  1.99 seconds = 4466.35 MB/sec
 Timing buffered disk reads:  690 MB in  3.05 seconds = 225.95 MB/sec

Avg of 234MB/sec
Max speed 265MB/sec

--------------------

sysbench --test=cpu --cpu-max-prime=20000 run
sysbench 0.4.10:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1

Doing CPU performance benchmark

Threads started!
Done.

Maximum prime number checked in CPU test: 20000


Test execution summary:
    total time:                          38.9431s
    total number of events:              10000
    total time taken by event execution: 38.9249
    per-request statistics:
         min:                                  3.38ms
         avg:                                  3.89ms
         max:                                100.37ms
         approx.  95 percentile:               4.76ms

Threads fairness:
    events (avg/stddev):           10000.0000/0.00
    execution time (avg/stddev):   38.9249/0.00

------------------------



OKAY NEW Linode SSD AND MORE CPU TIME




for i in 1 2; do hdparm -tT /dev/xvda; done

/dev/xvda:
 Timing cached reads:   18706 MB in  1.98 seconds = 9437.77 MB/sec
 Timing buffered disk reads:  1934 MB in  3.00 seconds = 644.51 MB/sec

/dev/xvda:
 Timing cached reads:   18834 MB in  1.98 seconds = 9503.05 MB/sec
 Timing buffered disk reads:  2000 MB in  3.00 seconds = 666.24 MB/sec



WOW SICK triple io speeds from before

----------------------------------


sysbench --test=cpu --cpu-max-prime=20000 run
sysbench 0.4.10:  multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1

Doing CPU performance benchmark

Threads started!
Done.

Maximum prime number checked in CPU test: 20000


Test execution summary:
    total time:                          30.0565s
    total number of events:              10000
    total time taken by event execution: 30.0438
    per-request statistics:
         min:                                  2.99ms
         avg:                                  3.00ms
         max:                                  3.35ms
         approx.  95 percentile:               3.01ms

Threads fairness:
    events (avg/stddev):           10000.0000/0.00
    execution time (avg/stddev):   30.0438/0.00

---------------

Okay it's faster.