Date: Fri, 27 May 2011 15:19:54 -0400 From: John Baldwin <jhb@freebsd.org> To: Dan Nelson <dnelson@allantgroup.com> Cc: Sergey Kandaurov <pluknet@gmail.com>, current@freebsd.org Subject: Re: [PATCH] Toggle display of the kernel idle process (per-CPU idle threads) in top Message-ID: <201105271519.54996.jhb@freebsd.org> In-Reply-To: <20110527165641.GB6688@dan.emsphone.com> References: <201105271046.30379.jhb@freebsd.org> <201105271159.28604.jhb@freebsd.org> <20110527165641.GB6688@dan.emsphone.com>
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On Friday, May 27, 2011 12:56:42 pm Dan Nelson wrote: > In the last episode (May 27), John Baldwin said: > > On Friday, May 27, 2011 11:17:58 am Sergey Kandaurov wrote: > > > On 27 May 2011 18:46, John Baldwin <jhb@freebsd.org> wrote: > > > > Some times in top, I don't want to see all the per-CPU idle threads > > > > but instead focus on the non-idle threads that are running. > > > > Especially on a system with a lot of CPUs, the idle threads can push > > > > all the interesting threads off of the list. This patch adds a new > > > > 'z' flag (gratuitously chosen letter) and interactive command to > > > > toggle the display of the system idle process. Patch is tested > > > > against 8, but should work fine on HEAD too: > > > > > > Works on HEAD as well. I like this idea. Perhaps it could be combined > > > with i key? > > > > I couldn't think of a sane way. There are a few times when I want to see > > the idle processes, but mostly I don't want to see them and want all the > > other settings (idle, system, threads, etc.) to be orthogonal. > > Top currently maps both "i" and "I" to "toggle idle processes". Maybe map > "I" to "toggle system idle processes"? Well, top -I is the command line argument for that already (and for other things like 'H' and 'S' the command line flag matches the interactive command). However, I wouldn't want to take 'i' as I know that's what my brain is hardwired to do to toggle the idle flag. I figure that at this point it would be too much of a POLA violation to change either of 'i' or 'I'. -- John Baldwin
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