Date: Wed, 7 Apr 2021 17:40:24 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: current@freebsd.org Subject: Re: console getty uses 1.5% of CPU Message-ID: <20210407144024.GS1073@zxy.spb.ru> In-Reply-To: <70521.1617806037@critter.freebsd.dk> References: <69119.1617772960@critter.freebsd.dk> <20210407130836.GA80160@zxy.spb.ru> <70521.1617806037@critter.freebsd.dk>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Apr 07, 2021 at 02:33:57PM +0000, Poul-Henning Kamp wrote: > > T.e. if all system eat 985 ticks of CPU each second and getty eat 15 > > ticks of CPU each second -- top show 1.5% for getty. > > That may be, but getty should not wake up at all in this situation, > it should be sleeping, waiting for modem-control signals. May be some kernel-side ticks counted for getty. You can try check this by dtrace, I mean. Snoop scheduler activation and check process accounting.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20210407144024.GS1073>