0.pre7.8:

[sbcl.git] / src / cold / shared.lisp

diff --git a/src/cold/shared.lisp b/src/cold/shared.lisp
index 3c910ac..d088aa2 100644 (file)
--- a/src/cold/shared.lisp
+++ b/src/cold/shared.lisp
@@ -17,15 +17,22 @@
 
 ;;; GC tuning has little effect on the x86 due to the generational
 ;;; collector.  For the older stop & copy collector, it assuredly
-;;; does.  GC time is proportional to the amount of non-grabage
+;;; does.  GC time is proportional to the amount of non-garbage
 ;;; needing collection and copying; when the application involved is
-;;; the SBCL compiler, it doesn't take any longer to collect 20Mb than
-;;; 2              -dan, 20000819
-
-#+sbcl
+;;; the SBCL compiler, it doesn't take any longer to collect 20 Mb than
+;;; to collect 2 Mb. -dan, 20000819
+;;;
+;;; Actually, tweaking *BYTES-CONSED-BETWEEN-GCS* to 20Mb instead of
+;;; the default 2 seemed to make SBCL rebuild O(25%) faster on my 256
+;;; Mb K6/3, so I think it does have some effect on X86/GENCGC. I
+;;; haven't looked into why this would be, though. Also, I'm afraid
+;;; that using 20Mb here might be unfriendly to people using more-reasonable
+;;; machines (like old laptops with 48Mb of memory..) so I've
+;;; suppressed this tweak except for Alpha. -- WHN 2001-05-11
+#+(and sbcl alpha) ; SBCL/Alpha uses stop-and-copy, and Alphas have lotso RAM.
 (progn
   (sb-ext:gc-off)
-  (setf sb-KERNEL::*bytes-consed-between-gcs* (* 20 (expt 10 6)))
+  (setf (bytes-consed-between-gcs) (* 20 (expt 10 6)))
   (sb-ext:gc-on)
   (sb-ext:gc))
 
@@ -267,7 +274,7 @@
 
 (defparameter *stems-and-flags* (read-from-file "stems-and-flags.lisp-expr"))
 
-(defmacro for-stems-and-flags ((stem flags) &body body)
+(defmacro do-stems-and-flags ((stem flags) &body body)
   (let ((stem-and-flags (gensym "STEM-AND-FLAGS-")))
     `(dolist (,stem-and-flags *stems-and-flags*)
        (let ((,stem (first ,stem-and-flags))
@@ -276,7 +283,7 @@
 
 ;;; Check for stupid typos in FLAGS list keywords.
 (let ((stems (make-hash-table :test 'equal)))
-  (for-stems-and-flags (stem flags)
+  (do-stems-and-flags (stem flags)
     (if (gethash stem stems)
       (error "duplicate stem ~S in stems-and-flags data" stem)
       (setf (gethash stem stems) t))