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Re: silent PC vs. emacs


From: T. V. Raman
Subject: Re: silent PC vs. emacs
Date: Sat, 2 Sep 2006 15:38:26 -0700

Suspect display-time is on?

>>>>> "Dan" == Dan Nicolaescu <address@hidden> writes:
    Dan> Richard Stallman <address@hidden> writes:
    >> Given the number of modes in Emacs that now use timers to
    >> do things during the idel-delay, it might be useful to
    >> create a single-point of customization --- perhaps
    >> initially as an interactive command, that one can invoke
    >> to "enter laptop power saving mode" --- somewhat similar
    >> in spirit to the various laptop-mode shell scripts
    >> floating around the net.
    >> 
    >> Is there really anything except stealth fontification that
    >> will _continue_ waking up?  As far as I know, everything
    >> else just operates once each time Emacs becomes idle.
    Dan> 
    Dan> There seems to be.
    Dan> 
    Dan> On my Fedora Core 5 machine, emacs compiled with the
    Dan> Lucid toolkit doing:
    Dan> 
    Dan> emacs -D -Q& strace -p PID_OF_EMACS
    Dan> 
    Dan> Prints things like this a few times a second:
    Dan> 
    Dan> gettimeofday({1157213370, 605043}, NULL) = 0 select(5,
    Dan> [4], NULL, NULL, {25, 670718}) = ? ERESTARTNOHAND (To be
    Dan> restarted) --- SIGALRM (Alarm clock) @ 0 (0) ---
    Dan> gettimeofday({1157213370, 708405}, NULL) = 0
    Dan> gettimeofday({1157213370, 708534}, NULL) = 0
    Dan> gettimeofday({1157213370, 708662}, NULL) = 0
    Dan> setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={0,
    Dan> 99743}}, NULL) = 0 sigreturn() = ? (mask now [])
    Dan> gettimeofday({1157213370, 709043}, NULL) = 0 select(5,
    Dan> [4], NULL, NULL, {25, 566718}) = ? ERESTARTNOHAND (To be
    Dan> restarted) --- SIGALRM (Alarm clock) @ 0 (0) ---
    Dan> gettimeofday({1157213370, 812405}, NULL) = 0
    Dan> gettimeofday({1157213370, 812535}, NULL) = 0
    Dan> gettimeofday({1157213370, 812663}, NULL) = 0
    Dan> setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={0,
    Dan> 99742}}, NULL) = 0 sigreturn() = ? (mask now []) ....
    Dan> 
    Dan> so there is some activity all the time. Is this
    Dan> something that can be avoided?

-- 
Best Regards,
--raman

      
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