this post was submitted on 24 Nov 2023
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If you're on Linux or Windows you can try it out yourself with SBCL:
mine stall at
[package org.shirakumo.machine-state];
; caught ERROR:
; READ error during COMPILE-FILE:
;
; Symbol "*GC-REAL-TIME*" not found in the SB-EXT package.
;
; Line: 66, Column: 33, File-Position: 2176
;
; Stream: #
debugger invoked on a UIOP/LISP-BUILD:COMPILE-FILE-ERROR in thread
#:
COMPILE-FILE-ERROR while
compiling #
Not sure when that was introduced into SBCL, but suffice to say your version is too old.
It was introduced in SBCL 2.3.7 as
(= *gc-real-time* *gc-run-time*)
(approximately, timer precision is weird) holds for serial GC, but not for parallel GC.