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Date: Fri, 21 Sep 2018 14:50:48 +0200 From: Sebastian Andrzej Siewior <bigeasy@...utronix.de> To: Thomas Gleixner <tglx@...utronix.de> Cc: linux-kernel@...r.kernel.org, Daniel Wagner <daniel.wagner@...mens.com>, Peter Zijlstra <peterz@...radead.org>, Will Deacon <will.deacon@....com>, x86@...nel.org, Linus Torvalds <torvalds@...ux-foundation.org>, "H. Peter Anvin" <hpa@...or.com>, Boqun Feng <boqun.feng@...il.com>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Subject: Re: [Problem] Cache line starvation On 2018-09-21 14:13:19 [+0200], Thomas Gleixner wrote: > On Fri, 21 Sep 2018, Sebastian Andrzej Siewior wrote: > > We reproducibly observe cache line starvation on a Core2Duo E6850 (2 > > cores), a i5-6400 SKL (4 cores) and on a NXP LS2044A ARM Cortex-A72 (4 > > cores). > > We tried to reproduce on AMD, but so far no failure. After tweaking the config a little, it just triggered after ~8 minutes on a A10-7800. > Thanks, > > tglx Sebastian
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