Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-21 Thread Anthoine Bourgeois
On Fri, Jul 18, 2025 at 01:48:17PM -0700, Elliott Mitchell wrote: >On Wed, Jul 16, 2025 at 11:31:06AM -0700, Elliott Mitchell wrote: >> On Wed, Jul 16, 2025 at 07:47:48AM +, Anthoine Bourgeois wrote: >> > On Tue, Jul 15, 2025 at 12:19:34PM -0700, Elliott Mitchell wrote: >> > > >> > >I tend to f

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-18 Thread Elliott Mitchell
On Wed, Jul 16, 2025 at 11:31:06AM -0700, Elliott Mitchell wrote: > On Wed, Jul 16, 2025 at 07:47:48AM +, Anthoine Bourgeois wrote: > > On Tue, Jul 15, 2025 at 12:19:34PM -0700, Elliott Mitchell wrote: > > >On Tue, Jul 15, 2025 at 08:21:40AM +, Anthoine Bourgeois wrote: > > >> > > >> Thank

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-16 Thread Elliott Mitchell
On Wed, Jul 16, 2025 at 07:47:48AM +, Anthoine Bourgeois wrote: > On Tue, Jul 15, 2025 at 12:19:34PM -0700, Elliott Mitchell wrote: > >On Tue, Jul 15, 2025 at 08:21:40AM +, Anthoine Bourgeois wrote: > >> On Mon, Jul 14, 2025 at 05:37:51PM -0700, Elliott Mitchell wrote: > >> >On Mon, Jul 14,

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-16 Thread Anthoine Bourgeois
On Tue, Jul 15, 2025 at 12:19:34PM -0700, Elliott Mitchell wrote: >On Tue, Jul 15, 2025 at 08:21:40AM +, Anthoine Bourgeois wrote: >> On Mon, Jul 14, 2025 at 05:37:51PM -0700, Elliott Mitchell wrote: >> >On Mon, Jul 14, 2025 at 07:11:06AM +, Anthoine Bourgeois wrote: >> >> On Fri, Jul 11, 2

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-15 Thread Elliott Mitchell
On Tue, Jul 15, 2025 at 08:21:40AM +, Anthoine Bourgeois wrote: > On Mon, Jul 14, 2025 at 05:37:51PM -0700, Elliott Mitchell wrote: > >On Mon, Jul 14, 2025 at 07:11:06AM +, Anthoine Bourgeois wrote: > >> On Fri, Jul 11, 2025 at 05:33:43PM +0200, Juergen Gross wrote: > >> >On 10.07.25 18:11,

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-15 Thread Anthoine Bourgeois
On Mon, Jul 14, 2025 at 05:37:51PM -0700, Elliott Mitchell wrote: >On Mon, Jul 14, 2025 at 07:11:06AM +, Anthoine Bourgeois wrote: >> On Fri, Jul 11, 2025 at 05:33:43PM +0200, Juergen Gross wrote: >> >On 10.07.25 18:11, Anthoine Bourgeois wrote: > >Tested on a VM which this could be tried on. >

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-14 Thread Elliott Mitchell
On Mon, Jul 14, 2025 at 07:11:06AM +, Anthoine Bourgeois wrote: > On Fri, Jul 11, 2025 at 05:33:43PM +0200, Juergen Gross wrote: > >On 10.07.25 18:11, Anthoine Bourgeois wrote: > >> We found at Vates that there are lot of spurious interrupts when > >> benchmarking the PV drivers of Xen. This is

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-14 Thread Anthoine Bourgeois
On Fri, Jul 11, 2025 at 05:33:43PM +0200, Juergen Gross wrote: >On 10.07.25 18:11, Anthoine Bourgeois wrote: >> We found at Vates that there are lot of spurious interrupts when >> benchmarking the PV drivers of Xen. This issue appeared with a patch >> that addresses security issue XSA-391 (see Fixe

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-11 Thread Elliott Mitchell
On Fri, Jul 11, 2025 at 07:41:02AM +, Anthoine Bourgeois wrote: > On Thu, Jul 10, 2025 at 01:05:47PM -0700, Elliott Mitchell wrote: > >On Thu, Jul 10, 2025 at 04:11:15PM +, Anthoine Bourgeois wrote: > >> We found at Vates that there are lot of spurious interrupts when > >> benchmarking the

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-11 Thread Juergen Gross
On 10.07.25 18:11, Anthoine Bourgeois wrote: We found at Vates that there are lot of spurious interrupts when benchmarking the PV drivers of Xen. This issue appeared with a patch that addresses security issue XSA-391 (see Fixes below). On an iperf benchmark, spurious interrupts can represent up t

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-11 Thread Jürgen Groß
On 10.07.25 18:11, Anthoine Bourgeois wrote: We found at Vates that there are lot of spurious interrupts when benchmarking the PV drivers of Xen. This issue appeared with a patch that addresses security issue XSA-391 (see Fixes below). On an iperf benchmark, spurious interrupts can represent up t

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-11 Thread Jürgen Groß
On 11.07.25 11:29, Teddy Astie wrote: You also probably want to send this to linux kernel mailing list too. Le 10/07/2025 à 18:14, Anthoine Bourgeois a écrit : We found at Vates that there are lot of spurious interrupts when benchmarking the PV drivers of Xen. This issue appeared with a patch t

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-11 Thread Teddy Astie
You also probably want to send this to linux kernel mailing list too. Le 10/07/2025 à 18:14, Anthoine Bourgeois a écrit : > We found at Vates that there are lot of spurious interrupts when > benchmarking the PV drivers of Xen. This issue appeared with a patch > that addresses security issue XSA-39

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-11 Thread Anthoine Bourgeois
On Thu, Jul 10, 2025 at 01:05:47PM -0700, Elliott Mitchell wrote: >On Thu, Jul 10, 2025 at 04:11:15PM +, Anthoine Bourgeois wrote: >> We found at Vates that there are lot of spurious interrupts when >> benchmarking the PV drivers of Xen. This issue appeared with a patch >> that addresses securi

Re: [PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-10 Thread Elliott Mitchell
On Thu, Jul 10, 2025 at 04:11:15PM +, Anthoine Bourgeois wrote: > We found at Vates that there are lot of spurious interrupts when > benchmarking the PV drivers of Xen. This issue appeared with a patch > that addresses security issue XSA-391 (see Fixes below). On an iperf > benchmark, spurious

[PATCH] xen/netfront: Fix TX response spurious interrupts

2025-07-10 Thread Anthoine Bourgeois
We found at Vates that there are lot of spurious interrupts when benchmarking the PV drivers of Xen. This issue appeared with a patch that addresses security issue XSA-391 (see Fixes below). On an iperf benchmark, spurious interrupts can represent up to 50% of the interrupts. Spurious interrupts a