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Super Turbo settings Raspberry Pi
#76
Thanks. When I downloaded the image, it was a .gz file. Where do I get the tar file?

Also, possible to do the same with the config.txt or are SSH and plugging into compiuter the ony two options?
Server: Asus Sabertooth Z77 | Intel Core i5 3.4 GHz | 16 GB DDR3 | 128 GB SSD, 82 TB (9 x 6 TB, 7 x 4 TB)
HTPC 1: Raspberry Pi 2 | HTPC 2: Raspberry Pi 2 | HTPC 3: Raspberry Pi
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#77
As we're getting off topic, private message me and I'll tell you.
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#78
works fine
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#79
What could be the best settings for HD music play.
So far my settings are
Code:
Firmware Version
Oct 17 2014 17:56:05
Copyright (c) 2012 Broadcom
version 845092531e360acd37f2f1964157f8079c77edfb (clean) (release)

temp=48.2'C

arm:     frequency(45)=700000000
core:     frequency(1)=500000000
h264:     frequency(28)=250000000
isp:     frequency(42)=250000000
v3d:     frequency(43)=250000000
uart:     frequency(22)=3000000
pwm:     frequency(25)=0
emmc:     frequency(47)=250000000
pixel:     frequency(29)=146250000
vec:     frequency(10)=0
hdmi:     frequency(9)=163683000
dpi:     frequency(4)=0
core:     volt=1.35V
sdram_c: volt=1.20V
sdram_i: volt=1.20V
sdram_p: volt=1.23V
H264=enabled
MPG2=disabled
WVC1=disabled
MPG4=enabled
MJPG=enabled
WMV9=disabled

Config info
config is unknown
arm_freq=1000
core_freq=500
sdram_freq=500
over_voltage=6
hdmi_force_hotplug=1
hdmi_channel_map=8
disable_overscan=1
program_serial_random=1
config_hdmi_boost=2
emmc_pll_core=1
hdmi_force_cec_address=65535
hdmi_edid_file=1
temp_limit=85
force_pwm_open=1
pause_burst_frames=1
avoid_fix_ts=1

Memory split
arm=384M
gpu=128M

When I play Multichannel 24/96 flac files I get audio drops but with ssh and top, cpu is <=60%.

Thanks
Config, video/audio player:
3T HDD <USB> RPi2/Libreelec <HDMI> Denon AVR-2313 <HDMI> LG TV 55UF860V
                                          <nfs wired> Linksys WRT32X router <USB> 4T HDD
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#80
Nobody to advice me ?
Config, video/audio player:
3T HDD <USB> RPi2/Libreelec <HDMI> Denon AVR-2313 <HDMI> LG TV 55UF860V
                                          <nfs wired> Linksys WRT32X router <USB> 4T HDD
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#81
well, check the GPU in that case. AFAIK popcornmix moved audio resampling etc to the GPU in recent builds - could be wrong though.
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#82
Thanks da-anda,

Can I change for
Code:
core_freq=550
?
what about sdram_freq?
Other parameter to set?
Config, video/audio player:
3T HDD <USB> RPi2/Libreelec <HDMI> Denon AVR-2313 <HDMI> LG TV 55UF860V
                                          <nfs wired> Linksys WRT32X router <USB> 4T HDD
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#83
I'm no hardcore PI modder, so can't tell. I'm fine with the approved and documented overclocking combinations. And as said - I could be wrong on that.
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#84
Thanx to all of you for the overclock tips!!!!
This is the best and most stable overclock for my Pi:

arm_freq=1100
core_freq=550
sdram_freq=600
over_voltage=8
over_voltage_sdram=4
gpu_mem=256
force_turbo=1
disable_overscan=1
avoid_pwm_pll=1
hdmi_force_hotplug=1
hdmi_force_edid_audio=1
hdmi_group=1
hdmi_mode=31
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#85
What is the purpose of avoid_pwm_pll?
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#86
(2014-12-03, 18:25)theowiesengrund Wrote: What is the purpose of avoid_pwm_pll?

See: http://elinux.org/RPiconfig
Quote:Don't dedicate a pll to PWM audio. This will reduce analogue audio quality slightly. The spare PLL allows the core_freq to be set independently from the rest of the gpu allowing more control over overclocking. Default 0

I wouldn't bother. Set arm_freq, core_freq and sdram_freq as high as you can.
There's no point overclocking isp_freq, h264_freq, v3d_freq as they are never a bottleneck running kodi.
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#87
I'd like to offer a big thanks to all the contributors to this thread (my Pi is running faster than ever)!

I'm using the following settings in my config.txt (RPi Model B) running Milhouse's build: #1208 (http://forum.kodi.tv/showthread.php?tid=...pid1856807)

gpu_mem=256
arm_freq=1100
core_freq=550
sdram_freq=600
over_voltage=8
over_voltage_sdram=4
force_turbo=1
disable_overscan=1
hdmi_force_hotplug=1
hdmi_ignore_cec_init=1
avoid_pwm_pll=1
disable_splash=1

Temperature is holding at 62 °C and the interface "feels" about "twice" as fast as using Leopold's RPI Config to set overclocking to "Turbo".

Is there a Linux benchmark utility that can be used to "quantify" the results of various configuration settings (for testing)?

Thanks (again).
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#88
Hi can anybody help me.. I stil dont unstand how this works:

pll_freq = floor(2400 / (2 * core_freq)) * (2 * core_freq)
gpu_freq = pll_freq / [even number]

If i dont want to use avoid_pwm_pll=1 and want my gpu_freq @ 350... how do calculate my core_freq?

Let's say i want a core_freq of 600 and a gpu_freq of 350

If i use core_freq=650 is the gpu_freq=325?
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#89
core_freq is the important one. That makes xbmc go faster. gpu_freq doesn't make xbmc measurably faster.

core_freq makes the ARM's L2 cache go faster, makes peripheral and sdram access a bit quicker and speeds up some GPU tasks like jpeg decode. All useful.
gpu_freq makes the 3D and video decode blocks go faster - but they are not a bottleneck. You can underclock the video decode block at 150MHz and still play 1080p video. The 3D block is mostly idle when rendering xbmc's gui.

The simple rule is to set gpu_freq to half of core_freq when core_freq >= 500.

if you want to know what happens, then:
core_freq=600 means pll_freq = 2400.

If you don't specify gpu_freq it will not exceed the default of 250 and it will choose the smallest N where pll_freq/(2*N).
This works out at N=5 and gpu_freq=240 which will be fine, although underclocked a fraction (you won't notice).

The next notch up will ne N=4, which gives gpu_freq=300. I'd be surprised if you can measure the difference between that and 240 though.
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#90
Oke if i get this right my settings will be:
1.
arm_freq=1150
core_freq=550
sdram_freq=650
over_voltage=8
over_voltage_sdram=4
avoid_pwm_pll=1 <----use this or not?
force_turbo=1
max_usb_current=1
h264_freq=275 <---- half core
gpu_mem=192 <------ or is it: gpu_mem_512=192
isp_freq=275 <---- half core
v3d_freq=275 <---- half core
disable_overscan=1
hdmi_force_hotplug=1
hdmi_ignore_cec_init=1

or?:
2.
arm_freq=1150
core_freq=550
sdram_freq=650
over_voltage=8
over_voltage_sdram=4
avoid_pwm_pll=1 <----use this or not?
force_turbo=1
max_usb_current=1
gpu_freq=275 <---- half core ....gpu_freq Sets core_freq, h264_freq, isp_freq, v3d_freq together. Default 250 so it will make the core_freq to 275 as well?
gpu_mem=192


disable_overscan=1
hdmi_force_hotplug=1
hdmi_ignore_cec_init=1


like you suggested underclock the GPU:
3.
arm_freq=1150
core_freq=600 overclock to 600
sdram_freq=650
over_voltage=8
over_voltage_sdram=4
avoid_pwm_pll=1 <----use this or not?
force_turbo=1
max_usb_current=1
h264_freq=200 <---- underclock
gpu_mem=192
isp_freq=200 <---- underclock
v3d_freq=200<---- underclock
disable_overscan=1
hdmi_force_hotplug=1
hdmi_ignore_cec_init=1

with of the settings do you recommend

or is it just as simple as this?:

arm_freq=1150
core_freq=600
sdram_freq=650
over_voltage=8
over_voltage_sdram=4
force_turbo=1
max_usb_current=1
gpu_mem=192
disable_overscan=1
hdmi_force_hotplug=1
hdmi_ignore_cec_init=1

The Pi will set the gpu_freq= to Default 250 or 240 if you set core_freq=600 and that's it?
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