Hi,
we work on our TX4938 (Toshiba Mips, little endian mode) based embedded
system (motion control)
running successfully a 3.2 RT patched kernel for month now.
I just give a try to a 3.4 RT patched kernel and detected a memory
problem as you can see from the logs below:
3.2 with RT FULL PREEMPT is o.k
3.4 without RT FULL PREEMPT is .ok.
3.4 with RT FULL PREEMPT is not o.k.
Can anyone give me hint in which direction I could go to detect the
problem or has anyone else the same problem?
Thanks and regards
Ralf
Linux MCU 3.2.27-rt40-00027-g8fd8396 #36 PREEMPT RT Mon Aug 20 16:21:04
CEST 2012 mips GNU/Linux
[root@MCU:/opt]# watch -n 1 cat /proc/meminfo | grep MemFree
MemFree: 216992 kB
MemFree: 216992 kB
MemFree: 216944 kB
MemFree: 216992 kB
MemFree: 216992 kB
MemFree: 216992 kB
MemFree: 216992 kB
uname -a
Linux MCU 3.4.9-rt17-11244-gb12622a #23 PREEMPT RT Fri Aug 24 12:15:49
CEST 2012 mips GNU/Linux
[root@MCU:/opt]# watch -n 1 cat /proc/meminfo | grep MemFree
MemFree: 204304 kB
MemFree: 204208 kB
MemFree: 204112 kB
MemFree: 204064 kB
MemFree: 203968 kB
MemFree: 203920 kB
MemFree: 203824 kB
MemFree: 203776 kB
uname -a
Linux MCU 3.4.9-rt17-11244-gb12622a #24 PREEMPT Fri Aug 24 14:15:04 CEST
2012 mips GNU/Linux
[root@MCU:/opt]# watch -n 1 cat /proc/meminfo | grep MemFree
MemFree: 222240 kB
MemFree: 222192 kB
MemFree: 222192 kB
MemFree: 222192 kB
MemFree: 222144 kB
MemFree: 222144 kB
MemFree: 222192 kB
MemFree: 222144 kB
MemFree: 222192 kB
MemFree: 222144 kB
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