https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96794
--- Comment #1 from Jan Hubicka <hubicka at ucw dot cz> --- > As seen > here:https://gist.githubusercontent.com/marxin/223890df4d8d8e490b6b2918b77dacad/raw/7e0363da60dcddbfde4ab68fa3be755515166297/gcc-10-with-zstd.svg > > each blocking linking of a GCC front-end leads to a wasted jobserver worker. Hmm, I am not sure how to interpret the graph. I can see that there is a funny staircase of ltranses but how that relates to jobserver workers? We limit makefile to link a binary at a time to avoid Richi's box getting out of memory, right? NUmber of partitions is currently 128 what is 100% of CPU usage for you? Honza