Date: Tue, 31 Oct 2023 10:06:13 -0700 From: John Baldwin <jhb@FreeBSD.org> To: Zhenlei Huang <zlei@FreeBSD.org>, Gordon Bergling <gbe@freebsd.org> Cc: FreeBSD Current <current@freebsd.org>, gallatin@FreeBSD.org Subject: Re: KTLS thread on 14.0-RC3 Message-ID: <77952261-2fe0-428e-b72c-d805f0273a76@FreeBSD.org> In-Reply-To: <53AC8651-141E-4950-84D9-FD94E8B353FD@FreeBSD.org> References: <ZT4pKpw35P-J-Q_T@bastion.ttyv0.de> <F6D87896-038C-4152-AFBD-68B0DDC71801@FreeBSD.org> <53AC8651-141E-4950-84D9-FD94E8B353FD@FreeBSD.org>
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On 10/30/23 3:41 AM, Zhenlei Huang wrote: > > >> On Oct 30, 2023, at 12:09 PM, Zhenlei Huang <zlei@FreeBSD.org> wrote: >> >> >> >>> On Oct 29, 2023, at 5:43 PM, Gordon Bergling <gbe@freebsd.org> wrote: >>> >>> Hi, >>> >>> I am currently building a new system, which should be based on 14.0-RELEASE. >>> Therefor I am tracking releng/14.0 since its creation and updating it currently >>> via the usualy buildworld steps. >>> >>> What I have noticed recently is, that the [KTLS] is missing. I have a stable/13 >>> system which shows the [KTLS] thread and a very recent -CURRENT that also shows >>> the [KTLS] thread. >>> >>> The stable/13 and releng/14.0 systems both use the GENERIC kernel, without any >>> custom modifications. >>> >>> Loaded KLDs are also the same. >>> >>> Did I miss something, or is there something in releng/14.0 missing, which >>> is currenlty enabled in stable/13? >> >> KTLS shall still work as intended, the creation of it threads is deferred. >> >> See a72ee355646c (ktls: Defer creation of threads and zones until first use) >>> Run ktls_init() when the first KTLS session is created rather than >>> unconditionally during boot. This avoids creating unused threads and >>> allocating unused resources on systems which do not use KTLS. >> >> ``` >> -SYSINIT(ktls, SI_SUB_SMP + 1, SI_ORDER_ANY, ktls_init, NULL); >> ``` > > Seems 14.0 only create one KTLS thread. > > IIRC 13.2 create one thread per core. That part should not be different. There should always be one thread per core. -- John Baldwin
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