Strange parallel behavior noted on Linux kernel sources wrt CPU threading

2018-06-26 Thread Jason Mancini
Hello, I have been trying to figure out why I see an odd behavior building Linux kernel sources that I don't see when building gcc sources. It's not a hardware issue, I've ruled that out with various testing and bios settings and monitoring clock speeds, etc. Basically, on a 6-core/12-thread p

RE: Strange parallel behavior noted on Linux kernel sources wrt CPU threading

2018-07-07 Thread Jason Mancini
So this has been observed as gnu make not reaping defunct make/sh processes on openSUSE Tumbleweed.  Presumably all the tokens in the shared jobserver read/write fds pipe become tied up by said defunct process, and then make behaves as -j1 at that point.   It doesn't happen every time, so it's v

RE: Strange parallel behavior noted on Linux kernel sources wrt CPU threading

2018-07-07 Thread Jason Mancini
Thanks Paul! I pulled make from git, copied those latest *.{c,h} files over the top of a 4.2.1 tarball. Make is working correctly now. I'll check for / file an openSUSE Tumbleweed tracking bug. -JasonM ___ Help-make mailing list Help-make@gnu.org h