On Tuesday, 20 March 2018 at 16:56:59 UTC, Dennis wrote:
On Tuesday, 20 March 2018 at 12:18:16 UTC, Adam D. Ruppe wrote:
On Tuesday, 20 March 2018 at 09:44:41 UTC, Dennis wrote:
I suspect you are seeing the Windows antivirus hitting you. D
runtime starts up in a tiny fraction of a second, you
shouldn't be noticing it.
You're totally right, disabling real-time protection makes a
massive difference. I always found a second exceptionally long
for a runtime to initialize, but I couldn't think of any other
differences between a simple dmd-compiled program and a simple
dmc-compiled program.
On Tuesday, 20 March 2018 at 12:18:16 UTC, Adam D. Ruppe wrote:
I betcha you'll see this delay (and a similar one on dmd
itself, your compiles could be running at half-speed with this
too)
Definitely. I've tested how long tools take to simply print
their help text: for the first time with virus scan, second
time with virus scan and without any real-time protection. D
tools seem to get the longest delay.
First Second No protection (miliseconds)
dmc 84 52 16
dmd 2400 1200 24
dub 2300 1100 25
ldc 4500 180 30
gcc 240 100 18
On Tuesday, 20 March 2018 at 12:18:16 UTC, Adam D. Ruppe wrote:
I don't know why the antivirus picks on D so much, but on my
box it does and it sounds like it is on yours too. BTW that
real time check box likes to keep turning itself on... so the
slowness will keep coming back.
Typical Windows... It keeps turning on the Windows update
service too.
This now leaves the question what's the best way to mitigate
this, because I would gladly get rid of the second of delay any
time I invoke dmd, ldc or dub as well as my own applications.
I cannot guarantee that this is the cause, but I observed that
Bitdefender is very picky with Intel OMF format. I made a lot of
complaints about this (it was impossible to debug a intel omf
compiled exe with Bitdefender installed and the advice received
from Bitdefender was to compile my executables in mscoff format.
That's how my problem disappeared. Windows Defender incorporated
last year Bitdefender scanning technology, maybe this is an
explanation.
