On Mon, Sep 16, 2013 at 08:30:48AM -0700, Marc MERLIN wrote:
> First, my apologies for the very late reply. I did read your answers and
> worked on them, but didn't have enough good data to reply.
>
> What I found is that something in enlightenment goes into a tight loop
> if I SIGSTOP a program like firefox-bin.
> I tried unloading all modules and the tight loop does not stop, so I'm
> guessing it must be the e17 core? (I was hopeful that the pager was
> maybe hanging on trying to snapshot a stopped process window).
Ok, I straced e from the start and got this:
read(8,
"\0\0\0\4\0\0\0\2au\1\0\0\0\5\0\0\0\0\0\0\0\20\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0\22\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\24",
55) = 55
open("/etc/gnutls/pkcs11.conf", O_RDONLY) = -1 ENOENT (No such file or
directory)
write(1, "ESTART: 0.01466 [0.01228] - Ecore_File Init Done\n", 49ESTART:
0.01466 [0.01228] - Ecore_File Init Done
) = 49
write(1, "ESTART: 0.01470 [0.00005] - Ecore_Con Init\n", 43ESTART: 0.01470
[0.00005] - Ecore_Con Init
) = 43
write(1, "ESTART: 0.01573 [0.00102] - Ecore_Con Init Done\n", 48ESTART: 0.01573
[0.00102] - Ecore_Con Init Done
) = 48
write(1, "ESTART: 0.01577 [0.00004] - Ecore_Ipc Init\n", 43ESTART: 0.01577
[0.00004] - Ecore_Ipc Init
) = 43
write(1, "ESTART: 0.01581 [0.00004] - Ecore_Ipc Init Done\n", 48ESTART: 0.01581
[0.00004] - Ecore_Ipc Init Done
) = 48
write(1, "ESTART: 0.01585 [0.00004] - Ecore_X Init\n", 41ESTART: 0.01585
[0.00004] - Ecore_X Init
) = 41
brk(0x11b4000) = 0x11b4000
socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC, 0) = 9
connect(9, {sa_family=AF_FILE, path=@"/tmp/.X11-unix/X0"}, 20) = 0
getpeername(9, {sa_family=AF_FILE, path=@"/tmp/.X11-unix/X0"}, [20]) = 0
uname({sys="Linux", node="gandalfthegreat", ...}) = 0
access("/home/merlin/.Xauthority", R_OK) = 0
open("/home/merlin/.Xauthority", O_RDONLY) = 10
So socket 9 is indeed the socket to X11.
E talks to X and probably asks for info on my stopped firefox, fails, and then
restarts
in a tight loop.
Note, I have an old e16 0.9999 on that machine. I can upgrade to latest
0.17 or some e18, but I know it will wipe my entire carefully setup
desktop that took me a long time to get just right :) so I haven't run
towards that option without knowing that it'll fix it.
I'm ok with doing this next though, unless someone can reproduce the bug in a
later version
and confirm they have the same problem.
Thanks,
Marc
> Any idea where to go from there? Can you reproduce on newer vesion of
> e17 than what I have?
> (launch firefox, sigstop it, strace enlightenment, and see whether
> you get the strace bit I have below)
>
> Thanks,
> Marc
>
> On Wed, Aug 14, 2013 at 01:49:43PM +1000, Dave wrote:
> > Disabling/Enabling modules is the only solution I can think of.
> >
> > You can do it from the command line like so:
> > qdbus org.enlightenment.wm.service /org/enlightenment/wm/RemoteObject
> > org.enlightenment.wm.Module.Disable clock
> >
> > Can't disable shelves, but you can disable the elements in a shelf. A
> > module config isn't affected if you disable, enable, unload, or load.
> >
> > Not too sure how much battery you'll save. Maybe with modules that poll
> > for
> > data, like temperature, battery, or cpufreq . I'd be interested to see your
> > results.
>
> strace shows this in a tight loop
> recvfrom(9, 0x24990b4, 4096, 256, 0, 0) = -1 EAGAIN (Resource temporarily
> unavailable)
> recvfrom(9, 0x24990b4, 4096, 256, 0, 0) = -1 EAGAIN (Resource temporarily
> unavailable)
> poll([{fd=9, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=9,
> revents=POLLOUT}])
> writev(9,
> [{"\214\3\n\0k\22L\1m\22L\1\6\4\30\0\0\0\0\0\6\4\30\0\31\0\0\0\30\2\0/"...,
> 40}, {NULL, 0}, {"", 0}], 3) = 40
> recvfrom(9, 0x24990b4, 4096, 256, 0, 0) = -1 EAGAIN (Resource temporarily
> unavailable)
> poll([{fd=9, events=POLLIN|POLLOUT}], 1, 4294967295^C <unfinished ...>
>
> Not sure what 9 is:
> enlighten 4347 merlin 0r CHR 1,3 0t0 1028
> /dev/null
> enlighten 4347 merlin 1w REG 0,25 1520680 6400659
> /home/merlin/.xsession-errors
> enlighten 4347 merlin 2w REG 0,25 1520680 6400659
> /home/merlin/.xsession-errors
> enlighten 4347 merlin 3u 0000 0,9 0 4102
> anon_inode
> enlighten 4347 merlin 4r FIFO 0,8 0t0 14553 pipe
> enlighten 4347 merlin 5w FIFO 0,8 0t0 14553 pipe
> enlighten 4347 merlin 6r 0000 0,9 0 4102
> anon_inode
> enlighten 4347 merlin 7r CHR 1,9 0t0 1033
> /dev/urandom
> enlighten 4347 merlin 8u unix 0xffff8801fd341240 0t0 14554 socket
> enlighten 4347 merlin 9u unix 0xffff8801fc97b840 0t0 12783 socket
> enlighten 4347 merlin 10r FIFO 0,8 0t0 13569 pipe
> enlighten 4347 merlin 11w FIFO 0,8 0t0 13569 pipe
> enlighten 4347 merlin 12u unix 0xffff8801faed7a80 0t0 12947
> /tmp/enlightenment-merlin/disp-
> enlighten 4347 merlin 13u CHR 1,5 0t0 1030
> /dev/zero
>
> I couldn't track what socket this was, but I figured out that the tight
> loop above happens when I kill -STOP some processes, and I do indeed to
> this on batteries to save CPU cycles:
> killall -STOP chrome chromium firefox-bin xmms mplayer pidgin procmeter3
> plugin-container
>
> It seems any time I stop a process, eventually enlightenment notices and
> loops on that recvfrom loop.
>
> On Wed, Aug 14, 2013 at 02:12:34PM +1000, Dave wrote:
> > Actually, there is another solution. Use profiles. That'll work with
> > shelves, and you can dynamically switch profiles from the command line.
>
> Thanks for that other tip.
>
> On Wed, Aug 14, 2013 at 03:33:14PM +0800, P Purkayastha wrote:
> > Easier way:
> >
> > enlightenment_remote -module-{disable,enable,load,unload}
> >
> > I used this to check which modules make most wakeups. net module is
> > quite notorious and unloading it helps a lot. It updates the module
> > every couple of ms, which causes a lot of wakeups. I use the following
> > patch to reduce thenumber of wakeups:
> > http://dpaste.com/1342674/
>
> Thanks for that one, that's good to know.
>
> Unfortunately, it seems that unloading all my modules didn't fix this
> problem. I went in utilies and unloaded all the modules.
> Then I went in system and unloaded everything too.
>
> It did not stop the tight loop, but still that's good to know.
>
> Thanks,
> Marc
> --
> "A mouse is a device used to point at the xterm you want to type in" - A.S.R.
> Microsoft is to operating systems ....
> .... what McDonalds is to gourmet
> cooking
> Home page: http://marc.merlins.org/ | PGP
> 1024R/763BE901
>
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.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ | PGP 1024R/763BE901
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