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| From: | Ken Brown |
| Subject: | bug#18752: 24.3.94; Why is Cygwin Emacs 2x quicker than Windows Emacs? |
| Date: | Sat, 18 Oct 2014 13:35:48 -0400 |
| User-agent: | Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 |
On 10/18/2014 12:17 PM, Eli Zaretskii wrote:
Unoptimized builds make debugging easier, but are about 2 - 2.5 times slower than optimized ones. For that reason, the usual practice is to produce unoptimized builds for snapshots and pretests, but optimized ones for official releases. Latest GCC versions support a -Og optimization switch that gives you the best of both worlds.
Do you happen to know how much of a performance difference there typically is between -Og and -O2?
Ken
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