Set the maximum size limit for the dbmlsync cache.
dbmlsync -cm size [ K | M | P ]...
The size is the largest size, in bytes, that the dbmlsync cache can grow to. You can optionally use the suffix K or M to specify units of kilobytes or megabytes, respectively.
To specify the size as a percentage of the total physical memory in the system, specify a number between 0 and 100, followed by the letter p. For example, -cm 60p limits the maximum size of the cache to 60% of physical memory.