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by shalo
Wed Aug 01, 2012 12:20 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

I work on the premise that the raspberry pi is fine at default settings, called (A). It should never have an issue from there no matter how much load you give it. It only makes sense that I should ensure any overclock is equally as stable. I'll call this limit (B). Once I am extremely confident it i...
by shalo
Tue Jul 31, 2012 8:11 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

To add to these recent replies, I recently received my second pi which means I can actually play a little since the first became a workhorse pretty quickly. I've been using q3 as a test and I want to find the non-overvolted limit first. I was able to run benchmarks and such at 920mhz ARM, however no...
by shalo
Sun Jul 29, 2012 4:00 pm
Forum: Raspbian
Topic: raspi-config and memory split
Replies: 4
Views: 4338

Re: raspi-config and memory split

But it sounds like the only things you are going to use it for is starting the boot sequence, and seeing the terminal occasionally, which can definitely be done with the smallest GPU memory option, the 32MB/224MB split. There's been a 16MB/240MB split for a few days now. It's there in your /boot di...
by shalo
Fri Jul 27, 2012 6:44 pm
Forum: Advanced users
Topic: 240mb/16mb split
Replies: 12
Views: 6722

240mb/16mb split

I can't find this mentioned anywhere, so I thought I would point out that it now appears to be an option to use 240/16. My pi has been running fine with it. https://github.com/raspberrypi/firmware/tree/master/boot The arm240_start.elf is automatically downloaded and available if you have used rpi-up...
by shalo
Sun Jul 22, 2012 11:34 am
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

It would have been clearer to explain that the integer divisor is of the pll that is double (x2) of core_freq also. Which I forgot to add in anyplace. And that is what had me confused until @dom showed that formula. So the numbers given do not appear to have any connection. I got the impression tha...
by shalo
Sat Jul 21, 2012 9:17 am
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

This is my current config. Seems to be working fine. I cannot get arm_freq to be stable at 850. I am trying to get quake or openarena working to test the gpu settings. Trying Quake3 from memetic.org which is supposed to work with raspianhf with sound. Openarena from Synaptic is giving video mode er...
by shalo
Fri Jul 20, 2012 8:56 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

This topic is relevant to my interests. Many people have posted how they raised arm, ram, and core freqs but no mention of gpu freq, so that's why I wonder. If it just sticks to 250 without manual modification, then it seems that it would be less stable with a raised core_freq. That's pretty much r...
by shalo
Fri Jul 20, 2012 10:36 am
Forum: Troubleshooting
Topic: cant measure enaught voltage TP1 and TP2
Replies: 7
Views: 1395

Re: cant measure enaught voltage TP1 and TP2

I can't measure expected 4.75 and 5.25V between TP1 and TP2 But I don't have any problem to get 4.9V on usb input even during the raspberry pi power is on I have problem with HDMI output (lot of green lines or dots on my LG monitor) Sounds like you should try adding a line in the config.txt file, o...
by shalo
Wed Jul 18, 2012 9:54 am
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

I figure arm_freq is probably the easiest and largest gain to be had, but the wiki says core_freq also impacts the CPU's access to L2 cache. gpu_freq automatically carries over to all the other GPU settings (core, hd264, isp, v3D), right? What about gains from speeding up the RAM versus the CPU/GPU...
by shalo
Wed Jun 27, 2012 1:17 pm
Forum: Advanced users
Topic: NZBGet
Replies: 10
Views: 6547

Re: NZBGet

Here are a few stats regarding sabnzbdplus 0.6.15 running on Raspbian with unrar-nonfree that you might find of interest. On a 10mbit connection running from a USB harddrive it has no trouble maxing out at 1.2mb/s download using 5 non-SSL connections (This is the sort of thing that will of course va...
by shalo
Wed Jun 20, 2012 9:47 pm
Forum: General discussion
Topic: Raspberry Pi Cooling system? :D
Replies: 77
Views: 17649

Re: Raspberry Pi Cooling system? :D

I think if anyone is planning to run their pi in a super hot environment they probably need a different approach from heatsinks and fans. They must also have one hell of a story to tell. Keeping stuff working at temperature is a bit of an odd art... I've worked with stuff that has run hot. Very hot...
by shalo
Wed Jun 20, 2012 2:51 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

Now I am a sad panda :( Tough little pi :D When you mention enpassant that "it doesn't like a high core" you make me a sad panda. Currently when you are watching videos with xbmc you are doing so with a mixture of 150mhz 1/3rd of the time and 300mhz 2/3rds of the time. You might as well just run it...
by shalo
Wed Jun 20, 2012 1:13 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

I just hit arm_freq=1100 sdram_freq=600 core_freq=300 over_voltage=6 Core doesn't like going up much on mine... But just ran an hours worth of video playback using xbmc and it worked really well, more responsive than usual. Although it does get a tad hotter, its no problem. Now I am a sad panda :(
by shalo
Wed Jun 20, 2012 12:48 pm
Forum: General discussion
Topic: Raspberry Pi Cooling system? :D
Replies: 77
Views: 17649

Re: Raspberry Pi Cooling system? :D

I feel like the cooling will be limited by the ambient anyway. Adding a fan to a pi installed in a sunbaked cabinet, is unlikely to help reduce temperatures for example. That is basically the now infamous oven test which also would not benefit from a fan. I think if anyone is planning to run their p...
by shalo
Tue Jun 19, 2012 4:18 pm
Forum: Raspbian
Topic: raspbian hangs on heavy network traffic
Replies: 15
Views: 3587

Re: raspbian hangs on heavy network traffic

Just something which is probably obvious to other users but just putting this out there that my pi still hangs with vm.min_free_kbytes = 8192 I've been using raspbian for ~9 days now. The first ~5 days typically caused the pi to hang once a day after it has a decent amount of uptime going. The past ...
by shalo
Sun Jun 17, 2012 4:19 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

@Shalo: highest stable core_freq for me is at 350. No over volt. Quake3 appears to run fine at this, but have only played a couple of minutes so far. Anything higher and I have shutdown problems in LXDE. I was running just gpu_freq at this before. So leave all at 350 since they are all derived from...
by shalo
Sun Jun 17, 2012 12:50 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

So the question is, if gpu_freq is left at 250 and I push up the core frequency to 375 am I in the right ballpark or not. I have not overvolted. This would be a raise of 1/3 of default GPU value, or am I going in the wrong direction? Well, in that case gpu_freq can pretty much be ignored. By settin...
by shalo
Sat Jun 16, 2012 2:04 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

My Pi won't run with core_freq set to 500. So I've set it to what was earlier suggested: arm_freq=850 gpu_freq=325 sdram_freq=500 This gives a respectable improvement in performance with no apparent ill effects. I've been running it with these settings for a couple of hours now and can't detect any...
by shalo
Sat Jun 16, 2012 12:51 am
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

Thanks @dom for explaining that. If the other settings are divisors then good old round numbers are going to be better. 300 instead of 315. You haven't really specified which numbers you are talking about. If you are talking about gpu_freq then 315 is better than 300. If you are talking about anoth...
by shalo
Fri Jun 15, 2012 10:15 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

You will have faster overall performance with core_freq=500 and the othe GPU freqs left at 250, than with gpu=350. core_freq includes the L2 cache and several of the clock cycles to SDRAM, so increasing this is good for the ARM. Note: all GPU freqs come from a single PLL with separate fractional di...
by shalo
Fri Jun 15, 2012 9:25 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

I'll have another go at this. So far I have gone 840/275/440 with no overvolting with no issues but anyway. I've noticed a number of people are overclocking the gpu and using gpu_freq which I'm not sure I really follow to be honest. It seems there is more mileage in the subset of settings. I assume ...
by shalo
Mon Jun 04, 2012 10:10 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 620803

Re: Overclocking

These were my best setting: over_voltage=6 arm_freq=1000 core_freq=500 sdram_freq=500 Running raspbian with those settings, and desktop/midori was pretty responsive. I've not considered the gpu yet but is that core_freq correct? Seems like it might be a repeat of the sdram_freq and I'm curious what...
by shalo
Sat May 19, 2012 9:00 pm
Forum: Raspbian
Topic: HISTORY: The start of raspbian (Debian Hard Float (armhf) for RPi)
Replies: 613
Views: 372788

Re: Debian Hard Float (armhf) for RPi

I think this thread by teh_orph is the only one that shows progress towards an accelerated x: http://www.raspberrypi.org/phpBB3/viewtopic.php?t=4649 Left it for about half an hour, and then had to kill the power as nothing was responding. It looked like loads of lines saying something like 'Function...
by shalo
Thu May 10, 2012 11:33 am
Forum: Troubleshooting
Topic: USB packet loss.
Replies: 253
Views: 75841

Re: USB packet loss.

<r>thexman said: <br/> <br/> <br/> im just waiting for the Debian patch fix to be released they seam to have it fixed i read last night late.<br/> <br/> as i have no Linux Kernel writing experience ill have to wait for someones build <br/> <br/> <br/> You don't say if you have taken any further step...

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