From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: paul@mjr.org Received: from krantz.zx2c4.com (localhost [127.0.0.1]) by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTP id dc42ad78 for ; Wed, 13 Jun 2018 16:03:39 +0000 (UTC) Received: from mjr.org (mjr.org [212.13.216.238]) by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTP id dd01cec0 for ; Wed, 13 Jun 2018 16:03:39 +0000 (UTC) Message-ID: <6c33f2b0c40477015d0fc3a66ee33c36a150f838.camel@mjr.org> Subject: Re: Kernel lockup with (debian) 4.16.0-2-rt-amd64 From: Paul Hedderly To: Greg KH Date: Wed, 13 Jun 2018 17:07:32 +0100 In-Reply-To: <20180613150813.GA7789@kroah.com> References: <46bd903565f6b1114b1d9f6bafa7db77bf3b5090.camel@mjr.org> <98f37803e752f4d4f19b9064240f0b876b2db588.camel@mjr.org> <20180613150813.GA7789@kroah.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Cc: WireGuard mailing list List-Id: Development discussion of WireGuard List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, 2018-06-13 at 17:08 +0200, Greg KH wrote: > > Note, the -rt kernels _always_ run slower than a non-rt kernel. Real > time is not "faster", it is only "deterministic". And it achieves > this > goal at the expense of performance, which is the only way it can be > done. Thanks for the reminder - I do forget that and get lazy and often use the rt all the time. > So I recommend just trying the "normal" kernel instead, odds are it > will > work just fine for you, unless you have some _very_ specific max- > bound > latency issues. Mostly audio/jack ie duplex 32 channels at 48k with a B* X32 mixer. To be fair I have more issues with the disc keeping up than the kernel... But the truth is that use takes a very small part of my time and normally a different machine so really I should use the rt kernel less! > > thanks, > > greg k-h