# Flow graph stops after 45/60 minutes (was: Re: Discuss-gnuradio Digest, Vol 142, Issue 15)

**URL:** <https://www.ruby-forum.com/t/flow-graph-stops-after-45-60-minutes-was-re-discuss-gnuradio-digest-vol-142-issue-15/232528>\
**Category:** GNU Radio\
**Created:** [October 14, 2014, 7:39pm UTC](https://www.ruby-forum.com/t/flow-graph-stops-after-45-60-minutes-was-re-discuss-gnuradio-digest-vol-142-issue-15/232528 "2014-10-14T19:39:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [October 14, 2014, 7:39pm UTC](https://www.ruby-forum.com/t/flow-graph-stops-after-45-60-minutes-was-re-discuss-gnuradio-digest-vol-142-issue-15/232528/1 "2014-10-14T19:39:03Z")

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Hi Dominique,  
please, please, please, don’t respond to digests, leaving the subject  
line unchanged; it’s completely impossible to match mails to  
conversations without searching one’s inbox. (it’s also in the first  
line of the digest…).

So, if you’re running your flow graph for 60 minutes and it produces  
250kS/s, that totals to 3.6_250MS = 0.9GS.  
Now, assuming you save complex float (which is 2x float32), that is a  
whopping 8B/S_0.9GS = 7.2GB.

By any chance: How full is your hard drive? Or do you write that data to  
RAM? Are you using a file system with a maximum file size (FAT32)?

Again, what you’re offering for debugging purposes is not really much.  
However, I can assure you that the file\_sink usually works perfectly  
over long times. Martin has already given you some hints of what could  
be interesting, maybe you could fill us in on these?

Greetings,  
Marcus