Date: Sat, 5 Oct 2019 20:10:53 -0600 From: Warner Losh <imp@bsdimp.com> To: bob prohaska <fbsd@www.zefox.net> Cc: freebsd-arm@freebsd.org Subject: Re: Dual cu sessions? Message-ID: <CANCZdfqsjd0D-WmjMGhUqu1z0uWh2g_L%2B_fgHHzTwG1X_f4ORw@mail.gmail.com> In-Reply-To: <20191006020739.GB37414@www.zefox.net> References: <20191006020739.GB37414@www.zefox.net>
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On Sat, Oct 5, 2019, 8:08 PM bob prohaska <fbsd@www.zefox.net> wrote: > Is it normal to see two cu sessions running on the same device? > > I happened to run ps -aux on a Pi2 running stable/12 and noticed > root 1343 0.0 0.1 4372 1408 3 I+ 16:19 0:00.02 cu -l > cuaU0 -s 115200 > root 1344 0.0 0.1 4372 1384 3 I+ 16:19 0:00.01 cu -l > cuaU0 -s 115200 > > One session is intentional; it provides serial access to the console of a > second > machine in my Pi cluster. That I might mistakenly _start_ two sessions > isn't a > huge surprise, that it persists does seem a little odd. I'd expect "device > busy". > This is a stable/12 machine, updated yesterday. > > Thanks for reading and any insights.... > Totally normal. Cu forks so that IO doesn't stall it. This was a standard plot before threads. Warner bob prohaska > > _______________________________________________ > freebsd-arm@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" >
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