[Spce-user] kamailio-proxy.log error - mysql lost connection

[Jeremie Chism]

CPU and ram usage stay low. If you see the load spiking high or staying
high get ready for a crash. I/O wait is the biggest issue to watch on
sipwise. I think Stephen and Kevin would back me up on that. 15K sas drives
have fixed any problems we were having.

On Monday, May 27, 2013, Martin Wong wrote:

> Hi Jeremie, thanks for the info.
>
> What RAID config do you have on the SASes?
>
> Would probably take your advice on the drives. Considering it's on a VM on
> a cloud provider...
>
> Anything else like CPU / RAM which I need to be concerned with?
>
> Thanks
>
> On Tue, May 28, 2013 at 10:32 AM, Jeremie Chism <jchism2 at gmail.com<javascript:_e({}, 'cvml', 'jchism2 at gmail.com');>
> > wrote:
>
>> I/O wait kills sipwise. Just speaking from experience. If you have dial
>> traffic and you are using sata drives or slow drives its just a matter if
>> time before it breaks. We aren't using a dialer and we use sas 15K drives
>> only b
>>
>> Sent from my iPhone
>>
>> On May 27, 2013, at 8:31 AM, Andrew Pogrebennyk <apogrebennyk at sipwise.com<javascript:_e({}, 'cvml', 'apogrebennyk at sipwise.com');>>
>> wrote:
>>
>> > On 05/27/2013 03:28 PM, Martin Wong wrote:
>> >> Nothing in the mysqld.err that stands out. After a reboot, the issue
>> >> goes away.
>> >>
>> >> Not sure why.
>> >>
>> >> There's dialer traffic which makes lots of calls which probably is the
>> >> cause. Not to say that the server load is very high... the CPU is
>> quite low.
>> >>
>> >> Do you think it's because it's a virtual machine?
>> >
>> > That could be possible, but can't say for sure without knowing the
>> > underlying hardware. What kind of HDD/RAID does that machine have?
>> > Do you see high %wa percentage (IO wait) in 'top'? What is the disk
>> > utilization reported in 'iostat -dx1' when that customer is dialing?
>> >
>> > HTH.
>> > Andrew
>> >
>> >
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>>
>
>

-- 
Jeremie Chism
Triton Communications
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