Date: Wed, 07 Apr 2021 05:22:40 +0000 From: Poul-Henning Kamp <phk@phk.freebsd.dk> To: current@freebsd.org Subject: console getty uses 1.5% of CPU Message-ID: <69119.1617772960@critter.freebsd.dk>
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I have two 12.2-R systems where the serial console is attached to a termin= al server. When there are no TCP connections to the terminal server, getty soaks up 1= .5% of the CPU in the kernel (sleeping in "ttyin"), ktrace shows no system calls. When a TCP connection is made to the terminal server, which raises the mod= em-handshake on the DE-9 connector, the CPU usage stops. Anybody else seeing something like this ? -- = Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence= .
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