Re: [RFC][PATCH][0/3] introduce rlimit cgroup

[Hirofumi Nakagawa]

> Hi Nakagawa-san,
>
> > Hello,
> >
> > I think existing rlimit interface isn't useful.
>
> Why it isn't useful?
> Please explain your motivation.
>

Hi Kosaki-san,

I am sorry about lacking of explaination in my previous post.
I think setrlimit system call interface isn't useful.
Because it cannot set rlimit from other process.

> > So I created rlimit interface on cgroup.
> > Do you think this is a proper way todo it? (or Is there any similar methods already?)
>
> your rlimit controller is merely setting process rlimit to each task in the group.

To set rlimit from other processes is my original intention.
For I do not see a way to do it, please let me know if there were any exists.

> So, it isn't almost people required action.

What is most people required action?

> At least, I don't think useful.
>
> > # cat /dev/cgroup/rlimit.limits
> > Number  Limit                  Soft Limit       Hard Limit       Unit
> > 0       Max cpu time           unlimited        unlimited         ms
> > 1       Max file size          unlimited        unlimited         bytes
> > 2       Max data size          unlimited        unlimited         bytes
> > 3       Max stack size         8388608          unlimited         bytes
> > 4       Max core file size     0                unlimited         bytes
> > 5       Max resident set       unlimited        unlimited         bytes
> > 6       Max processes          16300            16300             processes
> > 7       Max open files         1024             1024              files
> > 8       Max locked memory      32768            32768             bytes
> > 9       Max address space      unlimited        unlimited         bytes
> > 10      Max file locks         unlimited        unlimited         locks
> > 11      Max pending signals    16300            16300             signals
> > 12      Max msgqueue size      819200           819200           bytes
> > 13      Max nice priority       0                0
> > 14      Max realtime priority   0                0
> > 15      Max realtime timeout    unlimited        unlimited        us
> > # echo "1 100000000 200000000" > /dev/cgroup/rlimit.limits
> > # cat /proc/zero > /tmp/hoge
>
> in general, A complex setting file is thought as ugly.
> Why can't separate it?

I agree.

thanks.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/