# Gnuradio schedular **URL:** \ **Category:** GNU Radio\ **Created:** [June 14, 2014, 5:37am UTC](https://www.ruby-forum.com/t/gnuradio-schedular/230375 "2014-06-14T05:37:00Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\ **Post date:** [June 14, 2014, 5:37am UTC](https://www.ruby-forum.com/t/gnuradio-schedular/230375/1 "2014-06-14T05:37:00Z")
Dear sir I experienced that after every 8191 samples variables of blocks becomes 0. What is this 8191 limit?. I showed in gr\_scheduler\_overwive.pdf, N=2048. Is 2048 number of samples? I noticed that 2048\*4=8129. Please explain what 2048 and 8129 Thanks Neil Herath ---
**Author:** ![MHMND\_Herath](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ecccb3/32.png) [@MHMND\_Herath](https://www.ruby-forum.com/u/MHMND_Herath)\ **Post date:** [June 15, 2014, 1:23am UTC](https://www.ruby-forum.com/t/gnuradio-schedular/230375/2 "2014-06-15T01:23:35Z")
On Fri, Jun 13, 2014 at 11:46 PM, MHMND Herath [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Dear sir > I experienced that after every 8191 samples variables of blocks becomes 0. > What is this 8191 limit?. I showed in gr\_scheduler\_overwive.pdf, N=2048. Is > 2048 number of samples? I noticed that 2048\*4=8129. Please explain what 2048 > and 8129 > > Thanks > Neil Herath Hi Neil, It’s not clear (to me) what you’re talking about here. To answer any question it would help if you added a link to external documents, mentioned a block (or blocks) that you’re having problems with, and describe the flowgraph/application that it occurs in. Nathan ---
**Author:** ![MHMND\_Herath](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ecccb3/32.png) [@MHMND\_Herath](https://www.ruby-forum.com/u/MHMND_Herath)\ **Post date:** [June 16, 2014, 11:37am UTC](https://www.ruby-forum.com/t/gnuradio-schedular/230375/3 "2014-06-16T11:37:38Z")
That’s how C++ classes work. If you declare a variable inside a method that variable gets declared every time the method is called. If you want the variable to keep state between method calls you need to declare it as a member of the class inside the class declaration. For more information see any tutorial on C++ classes and look for variable scope. Nathan