This file indicates the size of the 2 caches
It is read once during initialisation of the program, If this file is absent or cannot be read, the values defaults as indicated in the source code blocksubs.c i.e. 1000 and 1000 as of release 1-8
Cache1 is an image of the disk It contains exactly CACHE1 blocks of size BLOC_SIZE defined as 1024 (as of 1-8) in disk_.h Very big objects are spread on several blocs but must be read in a single call, therefore CACHE1 must be big enough to accomodate the largest object (most probably Voc[_VText])
Cache2 contains the develloped image of the B objects. It is handled as a shared memory between the various pieces of the code accessing the objects and keeps a count of the handles. If the total size of the of objects exceeds CACHE2, it will destroy the unreferenced ones. Hence, if you loop on bsCreate() and never bsDestroy, cache2 extends until you run out of memory. Even if CACHE2 is very small, the code will allways run, just much slower, since you will more often have to access cache1 and possibly the disk.,
CACHE1 = 4000 // Size of first cache, as used in w5/blocksubs.c CACHE2 = 4000 // Size of second cache, as used in w5/objcache.c DISK = 4000 // Initial size of database on disk at creation