https://bz.apache.org/bugzilla/show_bug.cgi?id=58786

--- Comment #6 from Philippe Mouawad <[email protected]> ---
Update:

I made a benchmark based on attached test plan and I am wrong in my last
comment:
DBCP:
Generate Summary Results =  50000 in 00:00:06 = 8860.5/s Avg:     4 Min:     0
Max:   417 Err:     0 (0.00%)
Generate Summary Results =  50000 in 00:00:05 = 9109.1/s Avg:     4 Min:     0
Max:   411 Err:     0 (0.00%)
Generate Summary Results =  50000 in 00:00:06 = 9053.1/s Avg:     4 Min:     0
Max:   416 Err:     0 (0.00%)

TOMCAT POOL:
Generate Summary Results =  50000 in 00:00:04 = 12242.9/s Avg:     3 Min:     0
Max:   591 Err:     0 (0.00%)
Generate Summary Results =  50000 in 00:00:03 = 15216.1/s Avg:     2 Min:     0
Max:   422 Err:     0 (0.00%)
Generate Summary Results =  50000 in 00:00:03 = 14654.2/s Avg:     2 Min:     0
Max:   412 Err:     0 (0.00%)


EXCALIBUR
Generate Summary Results =  50000 in     2s = 30921.5/s Avg:     0 Min:     0
Max:   214 Err:     0 (0.00%)
Generate Summary Results =  50000 in     2s = 29360.0/s Avg:     0 Min:     0
Max:   252 Err:     0 (0.00%)
Generate Summary Results =  50000 in     2s = 31645.6/s Avg:     0 Min:     0
Max:   186 Err:     0 (0.00%)



So if my benchmark is not wrong:
Excalibur is the fastest, then Tomcat JDBC and finally DBCP2

Look strange to me.

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