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Re: chrome questions

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In article <npr1c8-fbv.ln1@pc.home>, Hactar <ebenZEROONE@verizon.net> wrote:
> 
> However, Chrome takes forever and a day to start up, because it tries to
> refresh every tab at once, and there's not enough memory for that (I'm 
> maxed out at 8 GiB).  Chrome trying though, makes the system thrash like 
> crazy and drives the load up over 20.  The system becomes unusable, 
> taking several minutes to respond to a keypress.  It takes 30-40 minutes 
> to resume normalcy.  I've thought of several solutions (listed in order 
> of preference), but I don't know if any of them are possible.
>  
> 1. Chrome postpones loading further tabs until the load drops below
>    (say) 4.

Got a workaround.  Takes about 4min on an Athlon 64x2, 8 GiB, ~60 tabs.
YMMV.  It's a poor-man's implementation of #1 above.  If you
want to do it too, add this to your ~/.bashrc :

alias cproc='ps ax | grep "[c]hrome.*renderer" | sed "s/^ *//" | cut -f 1 -d " "'
alias csusp='cproc | xargs kill -STOP'

cstart() {
    maxload=4
    pidtime=3
    sleeptime=5 # it only updates every 5s anyway
                        
    counter=0
    pids=(`cproc | tr '\n' ' '`)
    pidcount=${#pids[@]}
    clrmv="$(tput dl1 ; tput hpa 0)"
                                            
    getload() {
        uptime | sed 's/^.*load average: \([^,]*\),.*$/\1/'
    }

    times100() {
        dc -e "$1 100 * p" | sed 's/\..*$//'
    }

    maxload100=$(times100 $maxload)
                     
    waitloop() {
        itll_do=no
        while [ $itll_do = no ] ; do
            load=$(getload)
            load100=$(times100 $load)
            if [ $load100 -lt $maxload100 ] ; then
                itll_do=yes
            else
                echo -n "Load=$load; waiting"
                sleep $sleeptime
                echo -n "$clrmv"
            fi
        done
    }

    if [ $pidcount -eq 0 ] ; then
        echo 'No Chrome processes!'
    else
        echo -n $pidcount Chrome tab groups,
        csusp
        echo " all of which are suspended."
        for pid in ${pids[@]} ; do
            counter=$((counter+1))
            waitloop
            echo -n "Resuming Chrome tab group $counter/$pidcount (PID $pid): "
            kill -CONT $pid
            echo done.
            sleep $pidtime
        done
    fi
}

-- 
The people don't want war, but it is a simple matter to drag the people
along.  The people can always be brought to the bidding of the leaders.
All you have to do is tell them they are being attacked, and denounce the
pacifists for lack of patriotism and exposing the country to danger. - HG

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Thread

chrome questions ebenZEROONE@verizon.net (Hactar) - 2011-06-07 11:13 -0400
  Re: chrome questions Richard Kettlewell <rjk@greenend.org.uk> - 2011-06-07 16:41 +0100
    Re: chrome questions ebenZEROONE@verizon.net (Hactar) - 2011-06-07 12:19 -0400
      Re: chrome questions Richard Kettlewell <rjk@greenend.org.uk> - 2011-06-07 19:17 +0100
  Re: chrome questions Tobias Blass <tobiasblass@gmx.net> - 2011-06-07 17:09 +0000
    Re: chrome questions ebenZEROONE@verizon.net (Hactar) - 2011-06-07 14:49 -0400
  Re: chrome questions ebenZEROONE@verizon.net (Hactar) - 2011-06-07 17:37 -0400
  Re: chrome questions Loki Harfagr <l0k1@thedarkdesign.free.fr.INVALID> - 2011-06-08 16:59 +0000

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