How I reduce conversion time using dwg2bmp

[hwjeon]

QCAD version : Professional 3.21.3
OS : centos 7 64bit

I need convert dwg file to image file programmatically, so tried using dwg2bmp

I tried below command. caffile.dwg size is 1.2Mb
./dwg2bmp -a -f -q 0 -x 5000 -y 5000 -o ./cadfile.png ./cadfile.dwg

for test, use my notebook installed windows 10 pro, run command. result take 15 sec

but, run on server takes very long time 45 sec which installed centos 7

changed -x and -y options 5000 to 500 and retry, but it take 35 sec...

My notebook`s CPU is i7-7700hq 2.8 ghz and has 16Gb RAM
Server`s CPU is Xeon E5-4620 2.20GHz and has 16Gb RAM

I think two CPUs Performance diffrence is little, but dwg2bmp result time show me very diffrent

How I reduce time convert dwg to image using dwg2bmp?

I want convertion time more faster should be in 10sec

dwg2bmp has more option for time? or did you know another way?

[andrew]

You might want to try with an empty or minimal DXF or DWG file to check if the delay is caused by loading the application / creating the bitmap or by loading the DXF/DWG file. If an empty file is slow to convert as well, the disk on the server might be slower.

[hwjeon]

I tried 17kb DWG file, it take 8sec. Changed -x -y options 5000 to 500 take 1 sec

Guess delay caused not disk, depend on cpu performance

CPU usage via TOP command show me converting process used only 1 core, but CPU has 8 core

Have any option or command for convert using multiple core?

And if you know average time convert DWG to image by dwg2bmp, please tell me that