<p dir="ltr">That means that the output queue toward the server became full which indicates that the bottleneck was at the server. You can increase log_fifo_size if this only happens during peaks but that doesn&#39;t help if this is permanent. Flow control can also help but that propagates the stall towards applications, eg those will also stall.</p>

<div class="gmail_quote">On Apr 26, 2013 12:05 PM, &quot;Davide D&#39;Amico&quot; &lt;<a href="mailto:davide.damico@gmail.com">davide.damico@gmail.com</a>&gt; wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<br>
Message: 3<br>
Date: Fri, 26 Apr 2013 11:29:39 +0200<br>
From: Balazs Scheidler &lt;<a href="mailto:bazsi77@gmail.com" target="_blank">bazsi77@gmail.com</a>&gt;<br>
Subject: Re: [syslog-ng] Configuration for a centralized syslog-ng<br>
        server<br>
To: &quot;Syslog-ng users&#39; and developers&#39; mailing list&quot;<br>
        &lt;<a href="mailto:syslog-ng@lists.balabit.hu" target="_blank">syslog-ng@lists.balabit.hu</a>&gt;, <a href="mailto:eh@gmail.com" target="_blank">eh@gmail.com</a><br>
Message-ID:<br>
        &lt;<a href="mailto:CAKcfE%2BbvXksZFdz77SkN8VCrmH15wwbTvUk8xJeWFLEwHpay7w@mail.gmail.com" target="_blank">CAKcfE+bvXksZFdz77SkN8VCrmH15wwbTvUk8xJeWFLEwHpay7w@mail.gmail.com</a>&gt;<br>
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<br>
How do you know messages are dropped?</blockquote><div><br></div><div>Using freq_stats :)</div><div><br></div><div>Anyway, I found the issue that wasn&#39;t related to syslog-ng.</div><div>I had the syslog zfs partition on 92% so, after removing a lot of old files, everything went fine. </div>


</div><div><br></div>-- <br>d.
</div></div>
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