Re: increasing sysv semaphore limits

[Jörg Sonnenberger <joerg%bec.de@localhost>]

On 7/16/26 12:23 AM, Jason Thorpe wrote:
> > On Jul 15, 2026, at 2:58 PM, Mouse <mouse%rodents-montreal.org@localhost> wrote:
> >
> > Except doesn't that open you up to a DoS attack, running the kernel out
> > of memory by creating a zillion semaphores?
>
> I mean, it’s really the same thing as with file descriptors.

Yes and no. SYSV semaphores are persistent and independent of both file 
descriptors and processes. So even killing processes is not going to 
return the memory used by them.

Joerg

PS: the real question would IMO be why PG is still using SYSV semaphores 
in first place.