Debian 8.8 rt more jitter than wheezy
09 Jun 2017 15:31 #94358
by zack
Debian 8.8 rt more jitter than wheezy was created by zack
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09 Jun 2017 15:50 #94359
by PCW
Replied by PCW on topic Debian 8.8 rt more jitter than wheezy
is Wheezy using the same Preempt-RT kernel?
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09 Jun 2017 17:12 #94367
by zack
Replied by zack on topic Debian 8.8 rt more jitter than wheezy
Linux home 4.9.0-0.bpo.3-rt-amd64 #1 SMP PREEMPT RT Debian 4.9.25-1~bpo8+1 (2017-05-19) x86_64 GNU/Linux
this kernel for debian 8.8
this kernel for debian 8.8
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09 Jun 2017 17:47 #94370
by zack
Replied by zack on topic Debian 8.8 rt more jitter than wheezy
Sorry No
Linux debian 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux
this one on Debian 7x
Will try optimize , proceses, cores, gnome, hardware drivers, etc
Linux debian 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux
this one on Debian 7x
Will try optimize , proceses, cores, gnome, hardware drivers, etc
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09 Jun 2017 18:12 #94373
by PCW
Replied by PCW on topic Debian 8.8 rt more jitter than wheezy
Yes, your Wheezy and Jessie systems are running totally different real time kernel types
Its expected that a RTAI kernel will have lower jitter numbers than a Preempt-RT kernel
Note that worrying about jitter of these magnitudes is only important if you are running a
parallel port system.
Its expected that a RTAI kernel will have lower jitter numbers than a Preempt-RT kernel
Note that worrying about jitter of these magnitudes is only important if you are running a
parallel port system.
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09 Jun 2017 18:53 #94375
by zack
Replied by zack on topic Debian 8.8 rt more jitter than wheezy
Yip I agree
Thinking of 7i80hd with 7i40's to turn a lathe with 1/3 hp older micro 100 dc brushed servos.
Recomended by Todd was a 7i37 to handle misc cooling, tool changer stepper etc.
Am still a little concerned about ethernet reliability, should I be?
Zack
Thinking of 7i80hd with 7i40's to turn a lathe with 1/3 hp older micro 100 dc brushed servos.
Recomended by Todd was a 7i37 to handle misc cooling, tool changer stepper etc.
Am still a little concerned about ethernet reliability, should I be?
Zack
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