From: Ben Pfaff Date: Tue, 3 Oct 2006 09:41:00 +0000 (+0000) Subject: Fix logarithms. X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=commitdiff_plain;h=b492098dbb2bd50aef4104bcef418ba53f30a4eb Fix logarithms. Thanks to Haobo Xu . --- diff --git a/doc/44bsd.texi b/doc/44bsd.texi index ba67dda..d27343f 100644 --- a/doc/44bsd.texi +++ b/doc/44bsd.texi @@ -175,9 +175,9 @@ using this formula: threads ready to run (see below). If @var{load_avg} is 1, indicating that a single thread, on average, is competing for the CPU, then the current value of @var{recent_cpu} decays to a weight of .1 in -@am{\log_{2/3}.1 \approx 6, ln(2/3)/ln(.1) = approx. 6} seconds; if +@am{\log_{2/3}.1 \approx 6, ln(.1)/ln(2/3) = approx. 6} seconds; if @var{load_avg} is 2, then decay to a weight of .1 takes @am{\log_{3/4}.1 -\approx 8, ln(3/4)/ln(.1) = approx. 8} seconds. The effect is that +\approx 8, ln(.1)/ln(3/4) = approx. 8} seconds. The effect is that @var{recent_cpu} estimates the amount of CPU time the thread has received ``recently,'' with the rate of decay inversely proportional to the number of threads competing for the CPU.