[DistroKit] [PATCH] platform-v7a: vexpress: run qemu with CPU 4 cores

[DistroKit] [PATCH] platform-v7a: vexpress: run qemu with CPU 4 cores

[Michael Olbrich]

Newer versions of qemu can use multiple threads to emulate the CPU cores.
This can speed up booting significantly: 22 seconds instead of 34 seconds
for multi-user.target on on test machine.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
---
 configs/platform-v7a/run | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configs/platform-v7a/run b/configs/platform-v7a/run
index 7f46140e80bc..7ff747fba4d4 100755
--- a/configs/platform-v7a/run
+++ b/configs/platform-v7a/run
@@ -68,7 +68,7 @@ fi
 BASE_CMDLINE="console=ttyAMA0,115200 loglevel=5 systemd.log_level=warning systemd.show_status=auto"
 
 # Machine to emulate
-QEMU_ARGS=( -machine vexpress-a9 -cpu cortex-a9 -m 1024M )
+QEMU_ARGS=( -machine vexpress-a9 -cpu cortex-a9 -smp 4 -m 1024M )
 # disable graphics output
 QEMU_ARGS[${#QEMU_ARGS[@]}]="-nographic"
 # Exit qemu on reboot
-- 
2.20.1


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Re: [DistroKit] [PATCH] platform-v7a: vexpress: run qemu with CPU 4 cores

[Robert Schwebel]

On Sun, May 19, 2019 at 11:40:36AM +0200, Michael Olbrich wrote:
> Newer versions of qemu can use multiple threads to emulate the CPU cores.
> This can speed up booting significantly: 22 seconds instead of 34 seconds
> for multi-user.target on on test machine.
> 
> Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
> ---
>  configs/platform-v7a/run | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/configs/platform-v7a/run b/configs/platform-v7a/run
> index 7f46140e80bc..7ff747fba4d4 100755
> --- a/configs/platform-v7a/run
> +++ b/configs/platform-v7a/run
> @@ -68,7 +68,7 @@ fi
>  BASE_CMDLINE="console=ttyAMA0,115200 loglevel=5 systemd.log_level=warning systemd.show_status=auto"
>  
>  # Machine to emulate
> -QEMU_ARGS=( -machine vexpress-a9 -cpu cortex-a9 -m 1024M )
> +QEMU_ARGS=( -machine vexpress-a9 -cpu cortex-a9 -smp 4 -m 1024M )
>  # disable graphics output
>  QEMU_ARGS[${#QEMU_ARGS[@]}]="-nographic"
>  # Exit qemu on reboot
> -- 
> 2.20.1

Applied to next.

rsc
-- 
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