[LITMUS^RT] Installing LITMUS RT on Odroid XU4

[sobhan niknam]

> On 20 May 2019, at 17:40, Björn Brandenburg <bbb at mpi-sws.org> wrote:
> 
> On 20. May 2019, at 16:40, sobhan niknam <sobhan.niknam at yahoo.com> wrote:
>> 
>> There is no log file in /dev/litmus to look at.
> 
> I’m not talking about a LITMUS^RT-specific device file. Check the standard kernel log. 

The buffers overflowed: 

May 21 01:12:37 odroid kernel: [341828.508325] [c1] Failed trace writes: 25486
May 21 01:12:37 odroid kernel: [341828.508344] [c3] Failed trace writes: 46617
May 21 01:12:37 odroid kernel: [341828.508364] [c0] Failed trace writes: 19335
May 21 01:12:37 odroid kernel: [341828.508381] [c2] Failed trace writes: 0
May 21 01:12:37 odroid kernel: [341828.508619] [c2] Failed trace writes: 6915121
May 21 01:12:37 odroid kernel: [341828.508627] [c0] Failed trace writes: 6713421
May 21 01:12:37 odroid kernel: [341828.508696] [c3] Failed trace writes: 23201
May 21 01:12:37 odroid kernel: [341828.511328] [c3] Failed trace writes: 7169319

>> However, what should I do if supposing the trace buffers overflowed?
> 
> If you have enough memory, increase the trace buffer size. Otherwise, make sure they get drained quickly enough. 


I increased the buffer size of each cpu core in /sys/kernel/debug/buffer_size_kb, but the problem still exists!

Sobhan

> - Björn
> 

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