Changes between Version 21 and Version 22 of Performance


Ignore:
Timestamp:
2007-12-19T02:12:45Z (16 years ago)
Author:
warner
Comment:

add another set of load-testing results, with 1MB mean file size

Legend:

Unmodified
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Modified
  • Performance

    v21 v22  
    134134its hosts.
    135135
     136=== test one: 10kB mean file size ===
     137
    136138Preliminary results on the Allmydata test grid (14 storage servers spread
    137139across four machines (each a 3ishGHz P4), two web servers): we used three
     
    159161200Kbps and rose to about 1Mbps at the end.
    160162
     163=== test two: 1MB mean file size ===
     164
     165Same environment as before, but the mean file size was set to 1MB instead of
     16610kB.
     167
     168{{{
     169clients: 2MBps down, 340kBps up, 1.37 fps down, .36 fps up
     170tahoecs2: 60% CPU, 14Mbps out, 11Mbps in, load avg .74  (web server)
     171tahoecs1: 78% CPU, 7Mbps out, 17Mbps in, load avg .91  (web server)
     172tahoebs4: 26% CPU, 4.7Mbps out, 3Mbps in, load avg .50  (storage server)
     173tahoebs5: 34% CPU, 4.5Mbps out, 3Mbps in  (storage server)
     174}}}
     175
     176Load is about the same as before, but of course the bandwidths are larger.
     177For this file size, the per-file overhead seems to be more of a limiting
     178factor than per-byte overhead.
     179
    161180=== initial conclusions ===
    162181