On 2/11/24 05:26, Linux-Fan wrote:
David Christensen writes:On 2/11/24 00:11, Thomas Schmitt wrote:[...]Increase block size: 2024-02-11 01:18:51 dpchrist@laalaa ~ $ dd if=/dev/urandom of=/dev/null bs=1M count=1K 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 3.62874 s, 296 MB/sHere (Intel Xeon W-2295) | $ dd if=/dev/urandom of=/dev/null bs=1M count=1K | 1024+0 records in | 1024+0 records out | 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 2.15018 s, 499 MB/s
Raspberry pi 5: dd if=/dev/urandom of=/dev/null bs=1M count=1K 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 3.0122 s, 356 MB/s Now lets do it right and use random.............. dd if=/dev/random of=/dev/null bs=1M count=1K 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 2.9859 s, 360 MB/s
Secure Random can be obtained from OpenSSL:| $ time for i in `seq 1 100`; do openssl rand -out /dev/null $((1024 * 1024 * 1024)); done| | real 0m49.288s | user 0m44.710s | sys 0m4.579s
time for i in `seq 1 100`; do openssl rand -out /dev/null $((1024 * 1024 * 1024)); done
real 1m30.884s user 1m24.528s sys 0m6.116s