From: Vincent Legoll <vincent.legoll@gmail.com>
To: Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>,
linux-rockchip@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
Heiko Stuebner <heiko@sntech.de>,
Kyungmin Park <kyungmin.park@samsung.com>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
kernel@pengutronix.de,
Michael Riesch <michael.riesch@wolfvision.net>,
Robin Murphy <robin.murphy@arm.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: Re: [PATCH v5 00/25] Add perf support to the rockchip-dfi driver
Date: Wed, 14 Jun 2023 19:51:21 +0000 [thread overview]
Message-ID: <CAEwRq=qufx6Y6JCD3pzA31y7mfXUxFeMLtwthE_N7rYY7k9+-A@mail.gmail.com> (raw)
In-Reply-To: <20230614152721.eep5ip726ump2kpe@mercury.elektranox.org>
Hi,
On Wed, Jun 14, 2023 at 3:27 PM Sebastian Reichel
<sebastian.reichel@collabora.com> wrote:
> On Wed, Jun 14, 2023 at 03:40:34PM +0200, Sebastian Reichel wrote:
> > I tested the series on RK3588 EVB1. The read/write byts looks
> > sensible. Sometimes cycles reads unrealistic values, though:
> >
> > 18446744070475110400 rockchip_ddr/cycles/
>
> I have seen this going off a few times with and without memory
> pressure. If it's way off, it always seems to follow the same
> pattern: The upper 32 bits are 0xffffffff instead of 0x00000000
> with the lower 32 bits containing sensible data.
How often is that happening ?
I have been running this in a loop with varying sleep duration for
the last few hours without hitting it, with and without memtester.
REPEATS=1000
MAX_DURATION=100
OUT="/tmp/perf-dfi-rk3588-${REPEATS}x${MAX_DURATION}s.txt"
echo -n > $OUT
for i in $(seq $REPEATS) ; do
DURATION=$(shuf -i "0-${MAX_DURATION}" -n 1)
echo -n "${DURATION} : " >> $OUT
perf stat -a -e rockchip_ddr/cycles/ sleep $DURATION 2>&1 | awk
'/rockchip_ddr/ {printf("%X\n", int($1))}' >> $OUT
done
BTW, it's on a musl-libc arm64 void linux userspace.
--
Vincent Legoll
WARNING: multiple messages have this Message-ID (diff)
From: Vincent Legoll <vincent.legoll@gmail.com>
To: Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>,
linux-rockchip@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
Heiko Stuebner <heiko@sntech.de>,
Kyungmin Park <kyungmin.park@samsung.com>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
kernel@pengutronix.de,
Michael Riesch <michael.riesch@wolfvision.net>,
Robin Murphy <robin.murphy@arm.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: Re: [PATCH v5 00/25] Add perf support to the rockchip-dfi driver
Date: Wed, 14 Jun 2023 19:51:21 +0000 [thread overview]
Message-ID: <CAEwRq=qufx6Y6JCD3pzA31y7mfXUxFeMLtwthE_N7rYY7k9+-A@mail.gmail.com> (raw)
In-Reply-To: <20230614152721.eep5ip726ump2kpe@mercury.elektranox.org>
Hi,
On Wed, Jun 14, 2023 at 3:27 PM Sebastian Reichel
<sebastian.reichel@collabora.com> wrote:
> On Wed, Jun 14, 2023 at 03:40:34PM +0200, Sebastian Reichel wrote:
> > I tested the series on RK3588 EVB1. The read/write byts looks
> > sensible. Sometimes cycles reads unrealistic values, though:
> >
> > 18446744070475110400 rockchip_ddr/cycles/
>
> I have seen this going off a few times with and without memory
> pressure. If it's way off, it always seems to follow the same
> pattern: The upper 32 bits are 0xffffffff instead of 0x00000000
> with the lower 32 bits containing sensible data.
How often is that happening ?
I have been running this in a loop with varying sleep duration for
the last few hours without hitting it, with and without memtester.
REPEATS=1000
MAX_DURATION=100
OUT="/tmp/perf-dfi-rk3588-${REPEATS}x${MAX_DURATION}s.txt"
echo -n > $OUT
for i in $(seq $REPEATS) ; do
DURATION=$(shuf -i "0-${MAX_DURATION}" -n 1)
echo -n "${DURATION} : " >> $OUT
perf stat -a -e rockchip_ddr/cycles/ sleep $DURATION 2>&1 | awk
'/rockchip_ddr/ {printf("%X\n", int($1))}' >> $OUT
done
BTW, it's on a musl-libc arm64 void linux userspace.
--
Vincent Legoll
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
WARNING: multiple messages have this Message-ID (diff)
From: Vincent Legoll <vincent.legoll@gmail.com>
To: Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>,
linux-rockchip@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
Heiko Stuebner <heiko@sntech.de>,
Kyungmin Park <kyungmin.park@samsung.com>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
kernel@pengutronix.de,
Michael Riesch <michael.riesch@wolfvision.net>,
Robin Murphy <robin.murphy@arm.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: Re: [PATCH v5 00/25] Add perf support to the rockchip-dfi driver
Date: Wed, 14 Jun 2023 19:51:21 +0000 [thread overview]
Message-ID: <CAEwRq=qufx6Y6JCD3pzA31y7mfXUxFeMLtwthE_N7rYY7k9+-A@mail.gmail.com> (raw)
In-Reply-To: <20230614152721.eep5ip726ump2kpe@mercury.elektranox.org>
Hi,
On Wed, Jun 14, 2023 at 3:27 PM Sebastian Reichel
<sebastian.reichel@collabora.com> wrote:
> On Wed, Jun 14, 2023 at 03:40:34PM +0200, Sebastian Reichel wrote:
> > I tested the series on RK3588 EVB1. The read/write byts looks
> > sensible. Sometimes cycles reads unrealistic values, though:
> >
> > 18446744070475110400 rockchip_ddr/cycles/
>
> I have seen this going off a few times with and without memory
> pressure. If it's way off, it always seems to follow the same
> pattern: The upper 32 bits are 0xffffffff instead of 0x00000000
> with the lower 32 bits containing sensible data.
How often is that happening ?
I have been running this in a loop with varying sleep duration for
the last few hours without hitting it, with and without memtester.
REPEATS=1000
MAX_DURATION=100
OUT="/tmp/perf-dfi-rk3588-${REPEATS}x${MAX_DURATION}s.txt"
echo -n > $OUT
for i in $(seq $REPEATS) ; do
DURATION=$(shuf -i "0-${MAX_DURATION}" -n 1)
echo -n "${DURATION} : " >> $OUT
perf stat -a -e rockchip_ddr/cycles/ sleep $DURATION 2>&1 | awk
'/rockchip_ddr/ {printf("%X\n", int($1))}' >> $OUT
done
BTW, it's on a musl-libc arm64 void linux userspace.
--
Vincent Legoll
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-06-14 19:51 UTC|newest]
Thread overview: 171+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-24 8:31 [PATCH v5 00/25] Add perf support to the rockchip-dfi driver Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` [PATCH v5 01/25] PM / devfreq: rockchip-dfi: Make pmu regmap mandatory Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:21 ` Sebastian Reichel
2023-06-13 16:21 ` Sebastian Reichel
2023-06-13 16:21 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 02/25] PM / devfreq: rockchip-dfi: Embed desc into private data struct Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:22 ` Sebastian Reichel
2023-06-13 16:22 ` Sebastian Reichel
2023-06-13 16:22 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 03/25] PM / devfreq: rockchip-dfi: use consistent name for " Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:23 ` Sebastian Reichel
2023-06-13 16:23 ` Sebastian Reichel
2023-06-13 16:23 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 04/25] PM / devfreq: rockchip-dfi: Add SoC specific init function Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:26 ` Sebastian Reichel
2023-06-13 16:26 ` Sebastian Reichel
2023-06-13 16:26 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 05/25] PM / devfreq: rockchip-dfi: dfi store raw values in counter struct Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:28 ` Sebastian Reichel
2023-06-13 16:28 ` Sebastian Reichel
2023-06-13 16:28 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 06/25] PM / devfreq: rockchip-dfi: Use free running counter Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:32 ` Sebastian Reichel
2023-06-13 16:32 ` Sebastian Reichel
2023-06-13 16:32 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 07/25] PM / devfreq: rockchip-dfi: introduce channel mask Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:34 ` Sebastian Reichel
2023-06-13 16:34 ` Sebastian Reichel
2023-06-13 16:34 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 08/25] PM / devfreq: rk3399_dmc,dfi: generalize DDRTYPE defines Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:39 ` Sebastian Reichel
2023-06-13 16:39 ` Sebastian Reichel
2023-06-13 16:39 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 09/25] PM / devfreq: rockchip-dfi: Clean up DDR type register defines Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:46 ` Sebastian Reichel
2023-06-13 16:46 ` Sebastian Reichel
2023-06-13 16:46 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 10/25] PM / devfreq: rockchip-dfi: Add RK3568 support Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` [PATCH v5 11/25] PM / devfreq: rockchip-dfi: Handle LPDDR2 correctly Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:47 ` Sebastian Reichel
2023-06-13 16:47 ` Sebastian Reichel
2023-06-13 16:47 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 12/25] PM / devfreq: rockchip-dfi: Handle LPDDR4X Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:48 ` Sebastian Reichel
2023-06-13 16:48 ` Sebastian Reichel
2023-06-13 16:48 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 13/25] PM / devfreq: rockchip-dfi: Pass private data struct to internal functions Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 17:08 ` Sebastian Reichel
2023-06-13 17:08 ` Sebastian Reichel
2023-06-13 17:08 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 14/25] PM / devfreq: rockchip-dfi: Prepare for multiple users Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 17:15 ` Sebastian Reichel
2023-06-13 17:15 ` Sebastian Reichel
2023-06-13 17:15 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 15/25] PM / devfreq: rockchip-dfi: give variable a better name Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 17:16 ` Sebastian Reichel
2023-06-13 17:16 ` Sebastian Reichel
2023-06-13 17:16 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 16/25] PM / devfreq: rockchip-dfi: Add perf support Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-14 13:29 ` Sebastian Reichel
2023-06-14 13:29 ` Sebastian Reichel
2023-06-14 13:29 ` Sebastian Reichel
2023-06-15 13:13 ` Sascha Hauer
2023-06-15 13:13 ` Sascha Hauer
2023-06-15 13:13 ` Sascha Hauer
2023-05-24 8:31 ` [PATCH v5 17/25] PM / devfreq: rockchip-dfi: make register stride SoC specific Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 17:17 ` Sebastian Reichel
2023-06-13 17:17 ` Sebastian Reichel
2023-06-13 17:17 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 18/25] PM / devfreq: rockchip-dfi: account for multiple DDRMON_CTRL registers Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 17:24 ` Sebastian Reichel
2023-06-13 17:24 ` Sebastian Reichel
2023-06-13 17:24 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 19/25] PM / devfreq: rockchip-dfi: add support for RK3588 Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:16 ` Sebastian Reichel
2023-06-13 16:16 ` Sebastian Reichel
2023-06-13 16:16 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 20/25] dt-bindings: devfreq: event: convert Rockchip DFI binding to yaml Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 23:39 ` Sebastian Reichel
2023-06-13 23:39 ` Sebastian Reichel
2023-06-13 23:39 ` Sebastian Reichel
2023-05-24 8:31 ` [PATCH v5 21/25] dt-bindings: devfreq: event: rockchip,dfi: Add rk3568 support Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 19:42 ` Conor Dooley
2023-05-24 19:42 ` Conor Dooley
2023-05-24 19:42 ` Conor Dooley
2023-05-24 8:31 ` [PATCH v5 22/25] dt-bindings: devfreq: event: rockchip,dfi: Add rk3588 support Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 19:37 ` Conor Dooley
2023-05-24 19:37 ` Conor Dooley
2023-05-24 19:37 ` Conor Dooley
2023-06-08 20:07 ` Rob Herring
2023-06-08 20:07 ` Rob Herring
2023-06-08 20:07 ` Rob Herring
2023-05-24 8:31 ` [PATCH v5 23/25] arm64: dts: rockchip: rk3399: Enable DFI Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` [PATCH v5 24/25] arm64: dts: rockchip: rk356x: Add DFI Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` [PATCH v5 25/25] arm64: dts: rockchip: rk3588s: " Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-05-24 8:31 ` Sascha Hauer
2023-06-13 16:19 ` Sebastian Reichel
2023-06-13 16:19 ` Sebastian Reichel
2023-06-13 16:19 ` Sebastian Reichel
2023-06-14 13:40 ` [PATCH v5 00/25] Add perf support to the rockchip-dfi driver Sebastian Reichel
2023-06-14 13:40 ` Sebastian Reichel
2023-06-14 13:40 ` Sebastian Reichel
2023-06-14 14:19 ` Vincent Legoll
2023-06-14 14:19 ` Vincent Legoll
2023-06-14 14:19 ` Vincent Legoll
2023-06-14 15:27 ` Sebastian Reichel
2023-06-14 15:27 ` Sebastian Reichel
2023-06-14 15:27 ` Sebastian Reichel
2023-06-14 19:51 ` Vincent Legoll [this message]
2023-06-14 19:51 ` Vincent Legoll
2023-06-14 19:51 ` Vincent Legoll
2023-06-14 22:18 ` Sebastian Reichel
2023-06-14 22:18 ` Sebastian Reichel
2023-06-14 22:18 ` Sebastian Reichel
2023-06-15 6:56 ` Sascha Hauer
2023-06-15 6:56 ` Sascha Hauer
2023-06-15 6:56 ` Sascha Hauer
2023-06-15 13:27 ` Sascha Hauer
2023-06-15 13:27 ` Sascha Hauer
2023-06-15 13:27 ` Sascha Hauer
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