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Posted to server-dev@james.apache.org by "Noel J. Bergman" <no...@devtech.com> on 2002/10/16 10:39:28 UTC

RE: Additional Load Test Data (correction and addition)

> Basically, we're losing roughly 8.5K - 9K per 2050 1K messages.

Brain cramp ... but it's 4AM.  Not KBytes.  MBytes.  Those numbers are
already in KBytes.  We're losing 8.5 to 9 megabytes per 2050 1K messages.
And I can now report the following results before calling it a night:

./postal -m 5000 -p 1 -c 1000 amitower userlist - | tee -a test.log
time,messages,data(K),errors,connections,SSL connections
04:14,11,26533,0,1,0
04:15,10,26628,0,0,0
04:16,10,26966,0,0,0
04:17,13,26884,0,0,0
04:18,12,27075,0,0,0
04:19,10,27096,0,0,0

$ vmstat 30
   procs                      memory    swap          io     system
cpu
 r  b  w   swpd   free   buff  cache  si  so    bi    bo   in    cs  us  sy
id
 2  0  0  97532  89636  39184  26020   0   0     0   259 1413  1809  24   4
72
 2  0  0  97532  87456  41148  26020   0   0     0   319 1627  1950  25   6
70
12  0  0  97532  75352  52348  26020   0   0     0   458 1888  1900  27   5
68
12  0  0  97532  70292  57028  26020   0   0     0   365 1694  1907  25   5
70
 8  0  0  97532  70288  57028  26020   0   0     0   458 1889  1914  25   6
69
 2  0  0  97532  70280  57028  26020   0   0     0   413 1803  1907  26   6
68
12  0  0  97532  70272  57028  26020   0   0     0   316 1610  1930  25   5
70
12  0  0  97532  70268  57028  26020   0   0     0   455 1882  1893  25   7
68
12  0  0  97532  70268  57028  26020   0   0     0   368 1714  1916  25   5
70
12  0  0  97532  70264  57028  26020   0   0     0   365 1721  1947  25   5
69
 5  0  0  97532  70260  57028  26020   0   0     0   460 1902  1897  25   6
68
 2  0  0  97532  70252  57028  26020   0   0     0   360 1704  1932  24   5
71

That was a quick 6 minute test with large messages, a single connection, and
relatively few messages.  We are losing 4K to 8K per 30 second check, so
between 8K and 16K per 10 5000 KByte messages (I attribute the initial
larger loss to the requisite memory buffer required to hold storage).  And
yes, this time I do mean KBytes, not MBytes.  :-)

The JIT for that test was Hotspot Client.

	--- Noel


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