Setting the reseed limit

Red Hat Enterprise Linux 9.2 LPAR mode z/VM guest KVM guest

The PRNG reseeds after chunksize × reseed_limit bytes are read. By default, 100000 × 256 ≈ 25.6 MB can be read before an automatic reseed occurs.

Procedure

To set the number of times a chunksize amount of random data can be read from the PRNG before reseeding, write the number to the reseed_limit attribute.

For example:

# echo 10000 > /sys/devices/virtual/misc/prandom/reseed_limit

The reseed_limit value must be in the range 10000 - 100000.