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| What do i use the pinebook for? |
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Posted by: icemeister - 09-25-2018, 04:37 PM - Forum: General Discussion on Pinebook
- Replies (14)
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i have yet to find a good reason to own the pinebook. i had high hope when i first got it but now not so much. I keep setting it aside for awhile then keep coming back to computer and getting frustrated i keep getting an error about internal 16.04 failed, unable to get software, unable to install vpn, touch pad works to well, no upgrade to 18.4 ubuntu, unable to format flash drive,etc.
what i like is battery life, used on plane to watch movies worked ok, lightweight, good looking, easy to load operating system.
As a newbie i would like to use to help me learn more about linux so i do not have to go to win 10 but as an old guy i just am not getting it.
looks like most of the attention is going to the rock64 and the pinebook is just being set aside or is it.
Thanks for the forum to vent
icemeister
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| NVMe and new kernel |
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Posted by: bjbb17 - 09-25-2018, 03:39 PM - Forum: Linux on Pine A64(+)
- No Replies
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Hi,
Ive got my rockpro64 up and running basically following the procedure of flashing the ubuntu image to Emmc and from there , move / to an NVMe (Samsung 960Pro), which works great,
just .. how to get to a new Ayufan kernel up and running. Tried pretty much what I can (incl extlinux, manual dd's, flags, flash-kernel, tinkering in /boot, etc.) to the extent where it still loads .132-10975 kernel, whatsoever (even though all is installed for .138-1094)
Before going any deeper, anybody know this issue ?
A simple snippet on how the boot procedure actually works on the rockpro64 eMMC case would probably help as well.
Thanks a lot,
Bjoern
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| Help with linux task schuduler at 4.18, please |
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Posted by: dukla2000 - 09-25-2018, 02:10 PM - Forum: Linux on RockPro64
- Replies (3)
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Hi all
Is there anyone here who understands how to "tune" the Linux task scheduler? My problem is that at 4.18.9 it does not obviously favour the big cores for CPU heavy jobs which is crazy.
I wrote a little script to demonstrate what I mean - it uses an additional package stress as an example that can spawn n jobs for t seconds. In my case I run the load for 10 seconds, and after 5 seconds have a look which CPUs are in use:
Code: stress -c 1 -t 10 &
sleep 5
ps -L -o pid,lwp,pcpu,cpuid,time
sleep 6
stress -c 2 -t 10 &
sleep 5
ps -L -o pid,lwp,pcpu,cpuid,time
sleep 6
stress -c 3 -t 10 &
sleep 5
ps -o pid,lwp,pcpu,cpuid,time
sleep 6
stress -c 4 -t 10 &
sleep 5
ps -L -o pid,lwp,pcpu,cpuid,time
On the 4.4.138 (Ayufan) kernel things are pretty much to be expected - CPUs 4 & 5 (the big A72 cores) are always used:
Code: $ ./testcpu
stress: info: [1043] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
PID LWP %CPU CPUID TIME
741 741 0.0 4 00:00:00
1042 1042 0.0 0 00:00:00
1043 1043 0.0 4 00:00:00
1045 1045 100 4 00:00:05
1047 1047 0.0 5 00:00:00
stress: info: [1043] successful run completed in 10s
stress: info: [1050] dispatching hogs: 2 cpu, 0 io, 0 vm, 0 hdd
PID LWP %CPU CPUID TIME
741 741 0.0 4 00:00:00
1042 1042 0.0 5 00:00:00
1050 1050 0.0 5 00:00:00
1052 1052 98.6 5 00:00:04
1053 1053 100 4 00:00:05
1055 1055 0.0 0 00:00:00
stress: info: [1050] successful run completed in 10s
stress: info: [1058] dispatching hogs: 3 cpu, 0 io, 0 vm, 0 hdd
PID LWP %CPU CPUID TIME
741 741 0.0 4 00:00:00
1042 1042 0.0 5 00:00:00
1058 1058 0.0 4 00:00:00
1060 1060 99.8 0 00:00:04
1061 1061 100 5 00:00:05
1062 1062 100 4 00:00:05
1064 1064 0.0 3 00:00:00
stress: info: [1058] successful run completed in 10s
stress: info: [1067] dispatching hogs: 4 cpu, 0 io, 0 vm, 0 hdd
PID LWP %CPU CPUID TIME
741 741 0.0 4 00:00:00
1042 1042 0.0 4 00:00:00
1067 1067 0.0 2 00:00:00
1069 1069 100 1 00:00:05
1070 1070 100 4 00:00:05
1071 1071 100 3 00:00:05
1072 1072 100 5 00:00:05
1074 1074 0.0 0 00:00:00
stress: info: [1067] successful run completed in 10s
On 4.18.9 (despite all my efforts configuring the kernel) it is more luck whether CPUs 4 or 5 do any work:
Code: $ ./testcpu
stress: info: [2375] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
PID LWP %CPU CPUID TIME
2354 2354 0.1 3 00:00:00
2374 2374 0.0 0 00:00:00
2375 2375 0.0 4 00:00:00
2377 2377 83.5 2 00:00:05
2379 2379 1.0 5 00:00:00
stress: info: [2375] successful run completed in 10s
stress: info: [2382] dispatching hogs: 2 cpu, 0 io, 0 vm, 0 hdd
PID LWP %CPU CPUID TIME
2354 2354 0.0 3 00:00:00
2374 2374 0.0 0 00:00:00
2382 2382 0.0 1 00:00:00
2384 2384 100 3 00:00:05
2385 2385 100 4 00:00:05
2387 2387 0.0 0 00:00:00
stress: info: [2382] successful run completed in 10s
stress: info: [2390] dispatching hogs: 3 cpu, 0 io, 0 vm, 0 hdd
PID LWP %CPU CPUID TIME
2354 2354 0.0 3 00:00:00
2374 2374 0.0 1 00:00:00
2390 2390 0.0 4 00:00:00
2392 2392 100 3 00:00:05
2393 2393 100 5 00:00:05
2394 2394 100 2 00:00:05
2396 2396 0.0 0 00:00:00
stress: info: [2390] successful run completed in 10s
stress: info: [2399] dispatching hogs: 4 cpu, 0 io, 0 vm, 0 hdd
PID LWP %CPU CPUID TIME
2354 2354 0.0 3 00:00:00
2374 2374 0.0 3 00:00:00
2399 2399 0.0 5 00:00:00
2401 2401 100 0 00:00:05
2402 2402 100 4 00:00:05
2403 2403 100 5 00:00:05
2404 2404 100 2 00:00:05
2406 2406 0.0 1 00:00:00
stress: info: [2399] successful run completed in 10s
There does seem to be a kernel CONFIG option at 4.4, ARM_ROCKCHIP_CPUFREQ, that could explain the 4.4 behaviour. And is not available at 4.18.9. But in reality I would expect stock/mainline 4.18 scheduling to cope properly with big.LITTLE CPUs?
Any thoughts/suggestions welcomed.
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| Upcoming Shipments? |
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Posted by: jschall - 09-25-2018, 01:59 PM - Forum: General Discussion on Pinebook
- Replies (5)
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I received my BTO coupon for my 11" Pinebook about 2 weeks ago, and it mentioned that if I ordered then it would ship around the end of October. I ordered the same day.
I sent an email to inquire when my Pinebook would be shipped, but so far I haven't heard from Pine64.
Is it possible to get an update on the production and shipping status of all the recent Pinebook orders?
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| supersu |
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Posted by: iprogramplus - 09-25-2018, 10:11 AM - Forum: Getting Started
- Replies (1)
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installed android7 receiving notification to update the su binary, when updating with the normal option the image gets corrupted. please help, thanks,
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| Camera interface with rockpro64 |
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Posted by: rahulsharma - 09-24-2018, 11:19 PM - Forum: General Discussion on ROCKPRO64
- Replies (4)
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Hi,
I am just about to buy Rockpro64 board. I am going to use Linux image on that. With that i want to have some camera applications such as Orbslam.
Please confirm which best camera should i use with Rockpro64. As i found few cameras which are either given to be supported with the Pin64+ level boards or with Android stock.
Thanks.
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| Need Kernel Headers for 3.10 kernel |
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Posted by: ravikant@redpinesignals.com - 09-24-2018, 10:38 PM - Forum: General Discussion on PINE A64-LTS / SOPINE
- Replies (1)
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Hi,
I am trying to compile a driver for Xubuntu Mate running on PIne64 A+ board. I need to get kernel headers for compiling the driver. Can you please point me to the link or command to download the related headers. I have tried normal commands we use on ubuntu/fedora systems for downloading headers, but it doesn't so anything. Please suggest
Currently running OS has kernel v3.10.104. Is there a way to upgrade the kernel version, link to v3.18 or higher.
Thanks in advance
Ravi Kant
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| Performance and stability issues Openmediavault |
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Posted by: jgpacc - 09-24-2018, 09:26 PM - Forum: General Discussion on ROCK64
- Replies (10)
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I have been running a OMV on a HC1, XU4 and now Rock64. I decided to do performance comparisons. This then exposed my instability issue with Rock64. The HC1 gave 110 MB/s write speed. The XU4 only did 70 MB/s. The Rock64 might be the star I thought but it only did about 80 MB/s before it crashed. This now is the problem.
I try coping about 10 GBs from W10 to the Rock64 via ethernet and it fails every time at around 6 GBs. The box crashes and must be power cycled. There is no message in the OMV log. Smaller copies work and if I connect my USB 3.0 attached HDD to the USB 2 port the copy works but at 30 MB/s.
I have tried a HDD, a SSD and a M.2 SSD in a M.2 to USB enclosure. All 3 fail approximately the same. Makes me think the load is crashing something.
One error in the log I see occasionally is something like Fatal Watchdog not found.
I am running OMV 4.1.11 Linux version 4.4.132 on the eMMC. I have the correct power supply.
Anyone have any ideas on this problems? What other testing could I do to trap some meaningful error messages?
Thanks
Joep
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