Re: How to debug kern.ipc.maxpipekva ?

Konstantin Belousov <[email protected]> Tue, 26 May 2026 19:38:59 +0300

Newsgroups	gmane.os.freebsd.devel.hackers,gmane.os.freebsd.current
Message-ID	<[email protected]>

On Tue, May 26, 2026 at 05:49:15PM +0300, Rozhuk Ivan wrote:
> Hi!
> 
> 
> I have some systems that have a lot of records in dmesg:
> kern.ipc.maxpipekva exceeded; see tuning(7)
> kern.ipc.maxpipekva exceeded; see tuning(7)
> kern.ipc.maxpipekva exceeded; see tuning(7)
> 
> 
> How to find out who consume all pipes memory?
> 
> Is it possible to add in kernel tuning to limit kern.ipc.maxpipekva per process? (like done with files and threads)
> 

There is per-user limit RLIMIT_PIPEBUF.