Date: Sun, 12 Dec 2021 13:42:08 +0000 From: Edward Tomasz =?utf-8?Q?Napiera=C5=82a?= <trasz@freebsd.org> To: Gleb Smirnoff <glebius@freebsd.org> Cc: Kristof Provost <kp@freebsd.org>, src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: eb93b99d6986 - main - in_pcb: delay crfree() down into UMA dtor Message-ID: <YbX8MNFcj8ijjBrC@v3.localdomain> In-Reply-To: <YboGFRrOIz1pFN21@FreeBSD.org> References: <202112051847.1B5Il2GP030287@gitrepo.freebsd.org> <28AE53F1-2B22-444B-B1EC-1600FA741FE2@FreeBSD.org> <YbmEIsjf7RZBOOAJ@FreeBSD.org> <D85D47CD-1D03-43E7-84A4-579AF48A29E5@FreeBSD.org> <YboGFRrOIz1pFN21@FreeBSD.org>
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On 1215T0713, Gleb Smirnoff wrote: > On Wed, Dec 15, 2021 at 10:47:42AM +0100, Kristof Provost wrote: > K> > My radical opinion is that per-VNET pcb zones should just be eliminated. > K> > The only thing they serve is imposing maxsockets limit separately for > K> > each VNET. But we already have the maxsocket limit on the socket zone, > K> > which is _global_! > K> > > K> > Anybody to explain me the sense of the per-VNET per-pcb zone limit > K> > set to the same maxsockets value? You can't create a pcb without a > K> > socket, which is guaranteed by the in_pcballoc() prototype. Of course > K> > I understand that pcbs may outlive the socket. But those pcbs that > K> > outlive a socket, are eventually garbage collected as their lifetime > K> > is finite. Anyway jail/VNET was never declared as a resource management > K> > framework anyway! > K> > > K> > K> rctl(8) does appear to support per-jail resource limits, but I’m not sure how complete or functional that is. > > The manual doesn't say anything about network resources. The sources > of in_pcballoc() neither suggest that any per-something resource management > is done that can prevent allocation. True. I'm guessing it should be possible to limit it via 'openfiles' resource, but there's nothing socket-specific in RCTL.
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