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

2018-07-07 Thread Paul Smith
On Sat, 2018-07-07 at 18:54 +, Jason Mancini wrote: > 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 That's good to hear. FYI, yo

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

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

2018-07-07 Thread Paul Smith
On Sat, 2018-07-07 at 10:01 +, Jason Mancini wrote: > 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

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

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