/dev/urandom is pretty slow on Linux. OpenSSL's CSPRNG is several times faster. On my workstation just now, I get 13MB/sec from /dev/urandom and 61MB/sec from O

/dev/urandom is pretty slow on Linux. OpenSSL's CSPRNG is several times faster. On my workstation just now, I get 13MB/sec from /dev/urandom and 61MB/sec from OpenSSL's CSPRNG. You can't just add the parent pid because that information is lost when the process's parent exits (the ppid becomes 1).