Feedback request regarding speed optimisations in trace mode

[Joshua Root]

On 2019-6-7 06:38 , Mihir Luthra wrote:
> Hi everyone,
> 
> I have been working on trace mode optimisation project.
> I have added the functionalities to improve the speed. [1]
> I tested it on some ports, and it works stably.
> 
> Here are some comparisons I made on my machine:
> 
> In Original Code            
> Port gettext (+ deps :ncurses, libiconv, gperf) : 13 mins
> In modified code 11 mins
> 
> In Original Code            
> Port glib2 (+ deps :autoconf, automake, bzip2, libedit, libtool, pcre,
> pkgconfig, zlib) : 9:50 mins
> In modified code 9:30 mins
> 
> In Original Code            
> Port db48 : 2:45 mins
> In modified code 2:30 mins
> 
> In Original Code            
> Port perl5.28 (+deps : gdbm, readline) : 7:35 mins
> In modified code 7:20 mins
> 
> I wanted to know if the speed improvements meet the expectations?
> Kindly share some feedback regarding this.

This is certainly an improvement. How does it compare with running the
same builds without trace mode? The ideal scenario would of course be to
have trace mode incur only a barely noticeable performance penalty.

- Josh