Hashing takes lots of time sometimes about cl-pass HOT 2 CLOSED

* (time (cl-pass:hash "foo"))

Evaluation took:
  0.142 seconds of real time
  0.140000 seconds of total run time (0.140000 user, 0.000000 system)
  [ Run times consist of 0.012 seconds GC time, and 0.128 seconds non-GC time. ]
  98.59% CPU
  45 lambdas converted
  435,510,977 processor cycles
  30,680,400 bytes consed
  
"PBKDF2$SHA256:20000$5f283a648fb3ddde50436a60fc76dc17$93f79c48e79b84423207d8994e384127e5ebf0e2e76705f7d70155ba808e7f4f"
* (time (cl-pass:hash "foo"))

Evaluation took:
  0.232 seconds of real time
  0.232000 seconds of total run time (0.232000 user, 0.000000 system)
  100.00% CPU
  712,690,045 processor cycles
  27,838,160 bytes consed
  
"PBKDF2$SHA256:20000$043d4286323721b7a3afe057d7148ca8$01155e15c1becefcbc8f5b9dcdff07aa7fba3b769ec3ca5a694a0fdfead34ada"
* (time (cl-pass:hash "foo"))

Evaluation took:
  0.314 seconds of real time
  0.316000 seconds of total run time (0.308000 user, 0.008000 system)
  [ Run times consist of 0.068 seconds GC time, and 0.248 seconds non-GC time. ]
  100.64% CPU
  963,098,214 processor cycles
  27,842,688 bytes consed
  
"PBKDF2$SHA256:20000$d979eecd13e34412c4cdcda48d899a1e$3057723efdf854c9bb1fd72808c51509aea11bcc7ccf5a85309197f6afc5a47a"