Date: Sat, 8 Dec 2018 16:44:55 +0300 From: Lev Serebryakov <lev@FreeBSD.org> To: Eugene Grosbein <eugen@grosbein.net>, freebsd-hackers@freebsd.org, freebsd-current@freebsd.org Subject: Re: Painfully slow compilation (read: "make buildworld buildkernel") on not-so-weak system Message-ID: <1794522781.20181208164455@serebryakov.spb.ru> In-Reply-To: <405867c6-b9aa-22c9-7e16-3196350a4469@grosbein.net> References: <902729965.20181208141303@serebryakov.spb.ru> <405867c6-b9aa-22c9-7e16-3196350a4469@grosbein.net>
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Hello Eugene, Saturday, December 8, 2018, 4:27:13 PM, you wrote: >> I'm completely lost. Is it problem of software? Hardware? If it is >> hardware problem what should I blame? > Try using different kern.timecounter.hardware and/or kern.eventtimer.timer > but first try kern.eventtimer.periodic=1 instead of default 0. Nothing helps. I've tried periodic=1 and replace hardware and time with HPT (from TSC-Low and LAPIC), but system still "sticky" with single-job build and unresposnive with multiple-job build, and still there is strange bursts of CPU consumption from threads and processes which should be low-profile. > If something of this helps, try going back to defaults and then disable power-saving settings, if any. I'll try to disable C2/C3 and turn off Turbo as next step... -- Best regards, Lev mailto:lev@FreeBSD.org
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