diff --git a/collects/typed-racket/optimizer/tool/mzc.rkt b/collects/typed-racket/optimizer/tool/mzc.rkt
index 96b58ed715..776ce03acb 100644
--- a/collects/typed-racket/optimizer/tool/mzc.rkt
+++ b/collects/typed-racket/optimizer/tool/mzc.rkt
@@ -163,14 +163,16 @@
    append
    (append
     (for/list ([group (in-list grouped-events)])
-      (process-function group profile hot-functions TR-log))
+      (process-function group profile hot-functions
+                        (and profile (profile-total-time profile))))
     (if profile
         (for/list ([node (in-list (profile-nodes profile))])
-          (process-profile-node node grouped-events hot-functions TR-log))
+          (process-profile-node node grouped-events hot-functions TR-log
+                                (profile-total-time profile)))
         '()))))
 
 ;; Process the inlining logs corresponding to a single function.
-(define (process-function log profile hot-functions TR-log)
+(define (process-function log profile hot-functions total-time)
   (define produced-entries '())
   (let/ec escape
     ;; prune this entry from the logs, but return what we produced so far
@@ -190,6 +192,11 @@
                 p)))
        (define profile-entry (pos->node pos))
 
+       (define badness-multiplier
+         (if profile-entry
+             (/ (node-self profile-entry) total-time)
+             1))
+
        ;; We consider that a function is a loop if it gets inlined in itself
        ;; at least once.
        (define is-a-loop?
@@ -297,7 +304,9 @@
                         recommendation)
                 stx located-stx pos provenance
                 '() '()
-                badness)))
+                ;; uses ceiling to never go down to 0
+                ;; both badness and badness-multiplier are non-0
+                (ceiling (* badness badness-multiplier)))))
        (define (emit-success)
          (emit (opt-log-entry
                 kind
@@ -359,8 +368,8 @@
 
        produced-entries]))) ; return the list of new entries
 
-(define (process-profile-node profile-entry grouped-events hot-functions TR-log)
-
+(define (process-profile-node profile-entry grouped-events hot-functions TR-log
+                              total-time)
   (define produced-entries '())
   (define (emit e) (set! produced-entries (cons e produced-entries)))
 
@@ -371,6 +380,14 @@
     (define our-span (node-span profile-entry))
     (and pos our-pos our-span (<= our-pos pos (+ our-pos our-span))))
 
+  (define badness-multiplier (/ (node-self profile-entry) total-time))
+  ;; base values below are arbitrary
+  ;; uses ceiling to never go down to 0
+  ;; both badness and badness-multiplier are non-0
+  (define parameter-access-badness    (ceiling (* 20 badness-multiplier)))
+  (define struct-construction-badness (ceiling (* 20 badness-multiplier)))
+  (define exact-real-arith-badness    (ceiling (* 20 badness-multiplier)))
+
   (when inside-hot-function?
     (for ([TR-entry (in-list TR-log)]
           #:when (info-log-entry? TR-entry)
@@ -386,7 +403,7 @@
              (log-entry-located-stx TR-entry) (log-entry-located-stx TR-entry)
              (log-entry-pos TR-entry) 'typed-racket
              '() '()
-             20)))) ;; TODO have actual badness
+             parameter-access-badness))))
 
   (when inside-hot-function?
     (for ([TR-entry (in-list TR-log)]
@@ -404,7 +421,7 @@
              (log-entry-located-stx TR-entry) (log-entry-located-stx TR-entry)
              (log-entry-pos TR-entry) 'typed-racket
              '() '()
-             20)))) ;; TODO have actual badness
+             struct-construction-badness))))
 
   (when inside-hot-function?
     (for ([TR-entry (in-list TR-log)]
@@ -421,7 +438,7 @@
              (log-entry-located-stx TR-entry) (log-entry-located-stx TR-entry)
              (log-entry-pos TR-entry) 'typed-racket
              '() '()
-             20)))) ;; TODO have actual badness
+             exact-real-arith-badness))))
 
   produced-entries)
 
diff --git a/collects/typed-racket/optimizer/tool/report.rkt b/collects/typed-racket/optimizer/tool/report.rkt
index 613f8577f8..c6b019a7fe 100644
--- a/collects/typed-racket/optimizer/tool/report.rkt
+++ b/collects/typed-racket/optimizer/tool/report.rkt
@@ -29,7 +29,8 @@
 (define (generate-report this profile)
   (define-values (TR-log mzc-log) (generate-logs this))
   (log->report
-   (append (prune-cold-TR-failures TR-log profile)
+   (append (prune-cold-TR-failures TR-log profile
+                                   (and profile (profile-total-time profile)))
            (post-process-inline-log mzc-log profile TR-log))))
 
 
@@ -217,7 +218,7 @@
 ;;--------------------------------------------------------------------
 
 (require "profiling.rkt")
-(define (prune-cold-TR-failures TR-log profile)
+(define (prune-cold-TR-failures TR-log profile total-time)
   (define hot-functions (and profile (prune-profile profile)))
 
   ;; #f if no profiling info is available for this function
@@ -232,9 +233,23 @@
                                    (<= from pos (+ from span)))))
            p)))
 
-  (define (in-hot-function? l)
-    (or (not profile) ; keep everything if we don't have profile info
-        (opt-log-entry? l) ; don't prune successes
-        (memq (pos->node (log-entry-pos l)) hot-functions)))
-
-  (filter in-hot-function? TR-log))
+  (if (not profile)
+      TR-log ; keep everything if we don't have profile info
+      (for/list ([l (in-list TR-log)]
+                 #:when (or (opt-log-entry? l) ; don't prune successes
+                            ;; in hot function?
+                            (memq (pos->node (log-entry-pos l)) hot-functions)))
+        (define profile-entry (memq (pos->node (log-entry-pos l)) hot-functions))
+        (define badness-multiplier
+          (if profile-entry
+              (/ (node-self (car profile-entry)) total-time)
+              1))
+        (match l
+          [(missed-opt-log-entry kind msg stx located-stx pos provenance
+                                 irritants merged-irritants badness)
+           (missed-opt-log-entry kind msg stx located-stx pos provenance
+                                 irritants merged-irritants
+                                 ;; uses ceiling to never go down to 0
+                                 ;; both badness and badness-multiplier are non-0
+                                 (ceiling (* badness badness-multiplier)))]
+          [_ l])))) ; keep as is