On Fri, Nov 19, 2010 at 11:50:49AM +0200, Andriy Gapon wrote: > on 19/11/2010 11:46 Bruce Cran said the following: > > [removed current@ and stable@ from the Cc list] > > > > On Fri, 19 Nov 2010 15:41:29 +1100 > > Andrew Reilly <arei...@bigpond.net.au> wrote: > > > >> On Linux. Have you ever seen those sorts of UI problems on FreeBSD? > >> I don't watch much video on my systems, but I haven't seen that. > >> FreeBSD has always been good at keeping user-interactive processes > >> responsive while compiles or what-not are going on in the background. > > > > I've definitely seen problems when running builds in an xterm. I've > > often resorted to canceling it and running it on a syscons console > > instead to improve performance. > > > > So, what was it a problem with scheduler or with, e.g., "something X" > being too slow rendering glyphs? Who can tell...
Probably will pay a lot in negative karma by posting anything in the thread. But I can confirm your words, that tty->xterm->X server chain of output indeed significantly slows down the build processes. I usually never start build in the barebone xterm, always running screen under xterm. make -j 10 on 4 core/HTT cpu slows up to a half, from my unscientific impression, when run in the active screen window. Switching to other window in screen significantly speeds it up (note the prudent omission of any measured numbers).
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