[Systems] turtlejs server acting up

[Martin Abente Lahaye]

Hello Bernie,

Can you specify which sh process is this? There is only one sh script in
turtleblocksjs-server which is the init script [1]. Nothing in the server
is supposed to check /var/mail/www-data.

I will test and fix the init script so it can stop the service properly.

tch.

Refs:
1. https://github.com/tchx84/turtleblocksjs-server

On Sun, Apr 5, 2015 at 6:25 PM, Sebastian Silva <sebastian at fuentelibre.org>
wrote:

> I noticed this a couple of days ago, asked on this list what this
> turtlejs thing is, nobody replied. What is it?
>
>
> On 05/04/15 17:06, Bernie Innocenti wrote:
> > Hey Tincho!
> >
> > Sam noticed an sh process eating CPU on sunjammer for days:
> >
> >
> >
> http://munin.sugarlabs.org/static/dynazoom.html?cgiurl_graph=/munin-cgi/munin-cgi-graph&plugin_name=sugarlabs.org/sunjammer.sugarlabs.org/cpu&size_x=800&size_y=400&start_epoch=1393709726&stop_epoch=1428269726
> >
> > I looked into it and found that it was part of turtlejs. The process was
> > repeatedly statting /var/mail/www-data:
> >
> > wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WSTOPPED, NULL) = 1959
> > ioctl(10, TIOCSPGRP, [25587])           = -1 ENOTTY (Inappropriate ioctl
> > for device)
> > write(2, "sh: ", 4)                     = -1 EIO (Input/output error)
> > write(2, "Cannot set tty process group (In"..., 61) = -1 EIO
> > (Input/output error)
> > write(2, "\n", 1)                       = -1 EIO (Input/output error)
> > wait4(-1, 0x7fff8b9a2c6c, WNOHANG|WSTOPPED, NULL) = -1 ECHILD (No child
> > processes)
> > write(2, "[1] + Done                      "..., 100) = -1 EIO
> > (Input/output error)
> > write(2, "\n", 1)                       = -1 EIO (Input/output error)
> > stat("/var/mail/www-data", 0x7fff8b9a2c20) = -1 ENOENT (No such file or
> > directory)
> > pipe([3, 4])                            = 0
> > clone(child_stack=0,
> > flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
> > child_tidptr=0x7f66c56069d0) = 1960
> > close(4)                                = 0
> > read(3, "\\[\33[1;31m\\]2!\\[\33[0m\\]\n", 128) = 22
> > read(3, "", 128)                        = 0
> > --- SIGCHLD (Child exited) @ 0 (0) ---
> > close(3)                                = 0
> >
> >
> > After some experimentation, I ended up restarting it with the
> > initscript. However:
> >
> > 1. It might happen again. Any idea how to fix this?
> >
> > 2. '/etc/init.d/turtlejs stop' doesn't do anything, and there was no pid
> > file
> >
> > 3. Can we make Apache spawn and manage a single Python interpreter per
> > connection? Long-lived servers have the nasty tendency to leak memory,
> > get stuck or crash. Not to mention the security and scalability
> > implications o sharing a single process among multiple users. With WSGI
> > + FCGI, Apache should be able to start your app on demand and
> efficiently.
> >
>
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