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Not at all a n00b question, but could you give some more info? what
is your version of LTTng tools, are you using UST or kernel tracing?
How much ram is on your system? Kernel version? <br>
<br>
I actually have the patched lttng that has standard subbuffer sizes
of 4 mb, so I have not personnaly seen that problem. But the first
thing I would do is upgrade to the latest stable.<br>
<br>
<div class="moz-cite-prefix">On 13-04-14 06:49 AM, Amit Margalit
wrote:<br>
</div>
<blockquote
cite="mid:OFC51F8E88.28285A69-ONC2257B4D.003B3B3E-C2257B4D.003B6399@il.ibm.com"
type="cite">
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<font face="sans-serif" size="2">Hello,</font>
<br>
<br>
<font face="sans-serif" size="2">Sorry for the noob question. I
seem
to be unable to define the total of subbuf_size * num_subbuf
higher than
4MB. I am getting ~30% discarded tracepoint data.</font>
<br>
<br>
<font face="sans-serif" size="2">Any assistance would be greatly
appreciated.</font>
<br>
<br>
<font color="#000080" face="sans-serif" size="2">Amit Margalit</font>
<br>
<font color="#808000" face="sans-serif" size="2">IBM XIV </font><font
face="sans-serif" size="2">-
<i>Storage Reinvented</i></font>
<br>
<font face="sans-serif" size="2">XIV-NAS Development Team</font>
<br>
<font face="sans-serif" size="2">Tel. 03</font><font face="Arial"
size="2">-689-7774</font>
<br>
<font face="Arial" size="2">Fax. 03-689-7230</font>
<br>
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<br>
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