Hello, Igor and 7-zip users.
Can you explain me a difference between command line switches:
-m0=LZMA2 -mx=9 -ms=off -mtc=on -mmt=32
and the following GUI options (see attached).
If I launch compression using GUI, then 7-zip uses all 32 cores of a 32-core CPU.
If I launch compression using command line, then 7-zip sluggishly uses all 2-3 cores of a 32-core CPU.
In gui you use solid mode.
LZMA2 in 7-Zip needs big data to use multithreading.
Or you can reduce dictionary:
So it will use more threads even with -ms=off
OK. I solved the problem with
Is there any way to use
-m0=delta2 -m1=PPMd -mx=9
with 32 threads?
7-zip now can't use multithreading with 7z/ppmd.
7-zip can use multithreading with zip/ppmd. But zip format doesn't support delta filter.