linux-kernel - Re: [ANNOUNCE] v5.10-rc2-rt4

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Date:   Wed, 4 Nov 2020 14:09:30 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Daniel Wagner <wagi@...om.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [ANNOUNCE] v5.10-rc2-rt4

On 2020-11-04 13:47:46 [+0100], Daniel Wagner wrote:
> On Wed, Nov 04, 2020 at 12:19:48PM +0100, Daniel Wagner wrote:
> > Yes, Just fired up signaltest 5 times for arm64 and x86_64 with the
> > latest release. Keep you posted.
> 
> arm64
>   1184  0_signaltest         t0-max-latency      : fail     386.00
>   1185  0_signaltest         t0-max-latency      : fail     417.00
>   1186  0_signaltest         t0-max-latency      : fail     350.00
>   1187  0_signaltest         t0-max-latency      : fail     360.00
>   1188  0_signaltest         t0-max-latency      : fail     339.00
> 
> I noticed that also the last view 5.9-rt releases have higher values.
> For example, version 5.9.0-rc8-rt12 has only 217us.
> 
> x86_64
>   1189  0_signaltest         t0-max-latency      : fail      50.00
>   1190  0_signaltest         t0-max-latency      : pass      46.00
>   1191  0_signaltest         t0-max-latency      : pass      45.00
>   1192  0_signaltest         t0-max-latency      : pass      47.00
>   1193  0_signaltest         t0-max-latency      : fail      52.00
> 
> Same thing for version 5.9.0-rc8-rt12, the max value was 40us.
> 
> I'll work on getting these reports more useful, the performance trend
> seems to be an interesting metric.

Could you figure out if the arm64 thingy started with -rt4 or was
already in rt3?

Sebastian