Something that I find interesting is that by default hypnotoad workers = 4
and clients = 1000 and they aren't defined any where in your code to
override that, yet I see only one process running where I'd normally see a
manager and 4 workers. Moreover, I specified the hypnotoad defaults in
lutim.conf and it didn't make a difference. So what in your code is
causing this behavior?
On another note, while I'm not sure what is typical behavior, I ran strace
on the one lutim process and it was running like mad -- clearly the reason
why the CPU load was so high.
$ ps axf | grep mojo
18733 ? Rs *0:02* \_
/home/stefan/Data/mojo/lutim/script/lutim
The 0:02 bold column was increasing every second. Another proof of the
100% CPU use.
I wish I knew what it was doing exactly. Here's a snippet from strace, it
pretty much just loops this from what I can tell.
$ sudo strace -p 18733
stat("/home/stefan/Data/mojo/lutim/script/hypnotoad.pid",
{st_mode=S_IFREG|0644, st_size=5, ...}) = 0
poll([{fd=3, events=POLLIN}], 1, 1000) = ? ERESTART_RESTARTBLOCK
(Interrupted by signal)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23052,
si_status=1, si_utime=0, si_stime=1} ---
rt_sigreturn() = -1 EINTR (Interrupted system call)
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {0x7f0c1c385110, [], SA_RESTORER,
0x7f0c1bf64ff0}, 8) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], WNOHANG, NULL) = 23052
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], WNOHANG, NULL) = 23051
wait4(-1, 0x7fff7020c05c, WNOHANG, NULL) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23051,
si_status=1, si_utime=0, si_stime=0} ---
rt_sigreturn() = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {0x7f0c1c385110, [], SA_RESTORER,
0x7f0c1bf64ff0}, 8) = 0
wait4(-1, 0x7fff7020bf0c, WNOHANG, NULL) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0x7f0c1c870a10) = 23055
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0x7f0c1c870a10) = ? ERESTARTNOINTR (To be restarted)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23054,
si_status=1, si_utime=0, si_stime=0} ---
rt_sigreturn() = 56
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0x7f0c1c870a10) = 23057
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {0x7f0c1c385110, [], SA_RESTORER,
0x7f0c1bf64ff0}, 8) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], WNOHANG, NULL) = 23054
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], WNOHANG, NULL) = 23053
wait4(-1, 0x7fff7020c0cc, WNOHANG, NULL) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23053,
si_status=1, si_utime=0, si_stime=1} ---
rt_sigreturn() = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {0x7f0c1c385110, [], SA_RESTORER,
0x7f0c1bf64ff0}, 8) = 0
wait4(-1, 0x7fff7020bf7c, WNOHANG, NULL) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], NULL, 8) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0x7f0c1c870a10) = 23058
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0x7f0c1c870a10) = 23059
On Fri, Mar 7, 2014 at 6:19 AM, Stefan Adams <[email protected]> wrote:
> Looks like a really nice app!
>
> FWIW, hypnotoad is also consuming 100% CPU for me on Ubuntu 13.10.
>
> I followed the instructions exactly and modified only the contact
> configuration line as that was a requirement to start the server.
>
>
> On Thu, Mar 6, 2014 at 10:03 AM, Luc Didry <[email protected]> wrote:
>
>> Hello,
>>
>> I developed an image hosting service with Mojolicious but some users
>> which installed it have 100% CPU consumption with hypnotoad.
>>
>> One have Linux Mint 16 as OS and the other uses raspian on a raspberryPi
>>
>> I said them to try with morbo and that works well : low CPU consumption.
>>
>> In my install instructions, I told users to use Carton since it's -- for
>> me -- the best and simplest way to handle dependancies and to be able to
>> use multiple versions of Mojolicious on the same machine:
>> I got some other Mojolicious apps on my server and I don't want to
>> update them if something goes wrong with a new version of Mojolicious,
>> they are simple apps just for my usage (quick and dirty code, but that
>> do the job).
>>
>> Do you have any idea on what causes hypnotoad to take all the CPU?
>>
>> My app : https://github.com/ldidry/lutim (please, be kind on the code, I
>> know there is some refactoring to do to make it better).
>>
>> Thank you.
>> --
>> Luc
>> http://www.fiat-tux.fr/
>> Internet n'est pas compliqué, Internet est ce que vous en faites.
>>
>>
>
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