Date: Sat, 8 Dec 2018 15:13:18 +0300 From: Lev Serebryakov <lev@FreeBSD.org> To: freebsd-hackers@freebsd.org, freebsd-current@freebsd.org Subject: Re: Painfully slow compilation (read: "make buildworld buildkernel") on not-so-weak system Message-ID: <872315806.20181208151318@serebryakov.spb.ru> In-Reply-To: <902729965.20181208141303@serebryakov.spb.ru> References: <902729965.20181208141303@serebryakov.spb.ru>
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Hello Lev,
Saturday, December 8, 2018, 2:13:03 PM, you wrote:
> I've checked all "standard" places — CPU is not throttling, SSD looks
> perfectly Ok according to SMART and there is no complains from AHCI driver
> about timeouts and such, system doesn't start to use swap.
ZFS ARC was checked too. Here is statistics from top when single-job kernel
build is in action. A lot of free memory, small ARC, too much CPU is
consumed by interrupts, but there is free CPU clocks:
last pid: 19488; load averages: 7.03, 5.35, 5.10 up 0+14:43:04 15:09:55
417 threads: 7 running, 395 sleeping, 15 waiting
CPU 0: 50.0% user, 0.0% nice, 0.0% system, 16.4% interrupt, 33.6% idle
CPU 1: 16.4% user, 0.0% nice, 16.8% system, 0.0% interrupt, 66.8% idle
CPU 2: 0.0% user, 0.0% nice, 33.2% system, 0.0% interrupt, 66.8% idle
CPU 3: 33.2% user, 0.0% nice, 33.2% system, 0.0% interrupt, 33.6% idle
Mem: 28M Active, 315M Inact, 2076K Laundry, 2541M Wired, 1129K Buf, 5031M Free
ARC: 1025M Total, 197M MFU, 415M MRU, 514K Anon, 20M Header, 392M Other
189M Compressed, 563M Uncompressed, 2.98:1 Ratio
Swap: 16G Total, 16G Free
--
Best regards,
Lev mailto:lev@FreeBSD.org
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