[httperf] connreset and errors accounting ?

Paul Guermonprez paul at guermonprez.eu
Mon May 26 09:58:43 PDT 2008


hello,

i am trying to caracterize several apache setups with this great tool,
but i don't understand all the results.

i don't get 5XX, fine,
no client-timo, fine
but early in my bench i get connresets
i don't really understand if this reset is part of the normal exchange ???

and if i get a difference between requests and replies,
why is the difference not the numbers of errors ?
9136 = 4453 + 2453 + ???

thanks a lot, paul.

httperf --hog --server=192.168.201.2 --port 8080
--wsesslog=2000,2,blog.session --timeout=5 --think-timeout=2 --rate=15
httperf --hog --think-timeout=2 --timeout=5 --client=0/1
--server=192.168.201.2 --port=8080 --uri=/ --rate=15
--send-buffer=4096 --recv-buffer=16384
--wsesslog=2000,2.000,blog.session
Maximum connect burst length: 2

Total: connections 4453 requests 9136 replies 4453 test-duration 151.557 s

Connection rate: 29.4 conn/s (34.0 ms/conn, <=113 concurrent connections)
Connection time [ms]: min 0.3 avg 1859.3 max 7818.4 median 1439.5 stddev 1771.9
Connection time [ms]: connect 0.1
Connection length [replies/conn]: 1.000

Request rate: 60.3 req/s (16.6 ms/req)
Request size [B]: 210.0

Reply rate [replies/s]: min 8.8 avg 29.7 max 33.8 stddev 5.1 (30 samples)
Reply time [ms]: response 1266.4 transfer 66.7
Reply size [B]: header 328.0 content 26726.0 footer 1.0 (total 27055.0)
Reply status: 1xx=0 2xx=4453 3xx=0 4xx=0 5xx=0

CPU time [s]: user 23.16 system 128.40 (user 15.3% system 84.7% total 100.0%)
Net I/O: 788.7 KB/s (6.5*10^6 bps)

Errors: total 2453 client-timo 0 socket-timo 0 connrefused 0 connreset 2453
Errors: fd-unavail 0 addrunavail 0 ftab-full 0 other 0

Session rate [sess/s]: min 4.00 avg 13.20 max 15.40 stddev 2.91 (2000/2000)
Session: avg 2.23 connections/session
Session lifetime [s]: 4.1
Session failtime [s]: 0.0
Session length histogram: 0 1777 0 0 0 0 0 0 0 0 0 0 223


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