The default serialize precision is currently [1] set at 100. A little code
inspection shows precision, in this case, takes the usual meaning of
number of significant digits.
Given that the implicit precision of a (normal) IEEE 754 double precision
number is slightly less than 16 digits [2],
This creates problems for opcode caches since the classes are all
precompiled and usually optimized to the point where the opcodes that
loads them are NOP'ed away and you just have the full class table cached
in memory for each op_array. Walking through that class table on every
request and loo
