Slide
‹#› of 37
uCumulative
heavy I/O load
ØIndividual
requests take more time.
ØSessions
were not released from connection pool fast enough.
ØTotal number of simultaneous sessions is 4 times more
than estimated.
uEach session
used more memory, more temporary segments,
etc.
ØSlowed
down the system even more
ØEspecially true for I/O operations (since there were
more simultaneous requests).
ØQuickly spirals into a slow-down and eventual stoppage
of the system
Why is performance
affected? (2)