Re: lwp resource limit

[yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi)]

hi,

> Hello,
> 
> This is a new resource limit to prevent users from exhausting kernel
> resources that lwps use.
> 
> - The limit is per uid
> - The default is 1024 per user unless the architecture overrides it
> - The kernel is never prohibited from creating threads
> - Exceeding the thread limit does not prevent process creation, but
>   it will prevent processes from creating additional threads. So the
>   effective thread limit is nlwp + nproc
> - The name NTHR was chosen to follow prior art

can you provide a pointer to the prior art?
is it API compatible?

YAMAMOTO Takashi

> - There could be atomicity issues for setuid and lwp exits
> - This diff also adds a sysctl kern.uidinfo.* to show the user the uid
>   limits
> 
> comments?