<div dir="ltr">Did you have the Raid 1 and DB in ram on debian, too..?<div>-Avi<br><br><div class="gmail_quote">On Wed, Apr 27, 2011 at 1:30 PM, Antonio Teixeira <span dir="ltr"><<a href="mailto:eagle.antonio@gmail.com">eagle.antonio@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Just a little update for you guys.<br><br>I have jumped from debian to centos did a full reinstall + Raid 1 + DB in Ram.<br>
<br>And was able to get 78 Simult. Calls at only 10 % CPU so there is a huge difference so far from 120 % on debian :\.<br>
Call quality has improved , local lan call quality has rised , G729 Licenses working again thanks Brian West !!!.<br><br>I will now start to deploy our IVRs using ESL to see if i can offload some of the load.<br><br>Regards<br>
A/T<br><br><br><div class="gmail_quote">2011/4/27 Paul Cupis <span dir="ltr"><<a href="mailto:paul@cupis.co.uk" target="_blank">paul@cupis.co.uk</a>></span><br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
<div>On 27/04/11 01:24, Ariel Monaco wrote:<br>
> We had high CPU utilization peaks in the past, which lead to some<br>
> audio issues (clipping). We were using debian at that time, which<br>
> was a customer-side requirement.<br>
><br>
> I'm not a kernel guru but I remember this had something to do with<br>
> kernel timer cycles and the issue was address by adding "divider=10"<br>
> or "divider=100" as a kernel's boot loader option.<br>
<br>
</div>Interesting. This kernel option is designed to reduce the valy of<br>
CONFIG_HZ at run=time, so if you have a 1000Hz kernel, setting<br>
divider=10 at boot time will effectively give you a 100Hz kernel.<br>
<br>
This seems to fly in the face of other recommendations on this kernel<br>
setting!<br>
<br>
Debian default kernel sets CONFIG_HZ=100<br>
CentOS default kernel sets CONFIG_HZ=1000<br>
<br>
Regards,<br>
<div><div></div><div><br>
<br>
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