<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>There are still some conflicting arguments out there so we are getting together to discuss these results and to agree on a compromise</div><div><br></div><div>Ruben</div><div><br>On Jan 31, 2017, at 5:32 PM, Glenn Young <<a href="mailto:gyoung@jlab.org">gyoung@jlab.org</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<p>very nice diagnostics<br>
</p>
<br>
<div class="moz-cite-prefix">On 1/31/2017 11:55 AM, Tyler Lemon
wrote:<br>
</div>
<blockquote cite="mid:1344311927.2852890.1485881721699.JavaMail.zimbra@jlab.org" type="cite">
<div style="font-family: times new roman,new york,times,serif;
font-size: 12pt; color: #000000">
<div>Hello,<br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>The results of my investigation of the time gaps are as
follows:<br data-mce-bogus="1">
</div>
<ol style="list-style-type: undefined;">
<li>Fast-DAQ data is sent at 10kHz to EPICS (2000 samples
every 5Hz).<br data-mce-bogus="1">
</li>
<li>There are no time gaps in data from FPGA seen in LabVIEW.<br data-mce-bogus="1">
</li>
<li>There are no time gaps in LabVIEW before data is sent to
EPICS.<br data-mce-bogus="1">
</li>
<li>There are no time gaps in data when viewing shared
variables used to send data to EPICS.<br data-mce-bogus="1">
</li>
<li>There are no time gaps in data on EPICS Live Fast-DAQ
screen.<br data-mce-bogus="1">
</li>
<li>There are time gaps in data recorded by EPICS.<br data-mce-bogus="1">
</li>
<li>There were no time gaps in recorded data when data was
sent to EPICS at rate of 1Hz.<br data-mce-bogus="1">
</li>
<li>Time gaps first appeared after upping data rate to EPICS
to 5Hz.<br data-mce-bogus="1">
</li>
<li>There have been no changes to how LabVIEW processes
Fast-DAQ data besides increasing the EPICS data rate to 1Hz
to 5Hz.<br data-mce-bogus="1">
</li>
</ol>
<div>Because of these findings, the time gaps are most likely
caused by the write speed to disk for the EPICS data logging.
The cRIO and LabVIEW would not have any affect on the time
gaps seen.<br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>Best regards,<br data-mce-bogus="1">
</div>
<div>Tyler<br data-mce-bogus="1">
</div>
</div>
<br>
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<br>
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</blockquote>
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