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Put printfs inside locks to make lines come out cleaner.

Add a function to count number of items allocated.
Make items smaller

Signed-off-by: Don Marti <dmarti@cloudius-systems.com>
Merge branch 'small-items'
Release lock when returning early from shrinker

Signed-off-by: Don Marti <dmarti@cloudius-systems.com>
Adjust sleep times

Sleep for 1/5 second between "Oink"s and 2 seconds
after freeing memory.

Signed-off-by: Don Marti <dmarti@cloudius-systems.com>