Varnish CPU Usage

[Ayberk Kimsesiz]

Hi Andrei,

If i disable the Varnish, everything returns to normal. I use MPM as a
Prefork. Do i need to use Worker MPM for Varnish?
When i check the httpd-status, i see a strong relation between high CPU
usage and AJAX based codes.

*wpcf7_is_ajax_call=1&_wpcf7=19211&_wpcf7_request_v*
*wp-admin/admin-ajax.php HTTP/1.1*
*/forum/settings/analyticstick.json HTTP/1.1*

Monitoring Software: Net Data https://github.com/firehol/netdata

2016-08-02 9:58 GMT+03:00 Andrei <lagged at gmail.com>:

> Are you using the Event MPM by chance? If so, I suggest switching over to
> Worker since Event rarely runs into a bug/issue which causes threads to use
> inordinate amounts of resources while processing trivial requests.
> A bit off-topic, but what's that monitoring software being used from the
> ss?
>
> On Mon, Aug 1, 2016 at 2:59 AM, Ayberk Kimsesiz <ayberk.kimsesiz at gmail.com
> > wrote:
>
>> Hi again,
>>
>> The problem is still continue. While Varnish is active CPU usage is
>> always close to 100%.
>>
>> Thanks
>>
>> 2016-07-31 8:54 GMT+03:00 Ayberk Kimsesiz <ayberk.kimsesiz at gmail.com>:
>>
>>> Can you help? The problem is still continue. While Varnish is active CPU
>>> usage is always close to 100%.
>>>
>>> 2016-07-28 19:57 GMT+03:00 Ayberk Kimsesiz <ayberk.kimsesiz at gmail.com>:
>>>
>>>> Hi,
>>>>
>>>> *CPU Monitor: *
>>>>
>>>> http://i.imgur.com/5KT1xRu.jpg
>>>>
>>>> *Apache status:*
>>>>
>>>> SrvPIDAccMCPUSSReqConnChildSlotClientProtocolVHostRequest
>>>> *0-0* - 0/0/9766 . 134.59 37 0 0.0 0.00 64.40 ::1 http/1.1
>>>> ns1.***com:8080 OPTIONS * HTTP/1.0
>>>> *1-0* 14612 0/16/9058 _ 17.83 13 1498 0.0 0.02 53.29 176.***.10
>>>> http/1.1 www.***.com:8080 POST /wp-admin/admin-ajax.php HTTP/1.1
>>>> *2-0* 10863 0/179/9795 _ 185.14 6 1424 0.0 0.58 60.32 176.***.10
>>>> http/1.1 www.***.com:8080 POST /wp-admin/admin-ajax.php HTTP/1.1
>>>> *3-0* 13127 0/127/9435 _ 119.80 4 1419 0.0 0.42 56.51 176.***.10
>>>> http/1.1 www.***.com:8080 POST /wp-admin/admin-ajax.php HTTP/1.1
>>>> *4-0* - 0/0/9187 . 0.00 50 0 0.0 0.00 56.60 ::1 http/1.1
>>>> ns1.***.com:8080 OPTIONS * HTTP/1.0
>>>> *5-0* 14851 0/9/8761 _ 8.95 13 1559 0.0 0.01 57.90 176.***.10 http/1.1
>>>> www.***.com:8080 POST /wp-admin/admin-ajax.php HTTP/1.1
>>>> *6-0* 14852 0/6/8130 _ 6.67 4 1482 0.0 0.01 51.88 176.***.10 http/1.1
>>>> www.***.com:8080 POST /wp-admin/admin-ajax.php HTTP/1.1
>>>> *7-0* 14192 11/57/8355 *K* 72.73 0 1363 106.6 0.44 52.79 176.***.10
>>>> http/1.1 www.***.com:8080 POST /wp-admin/admin-ajax.php HTTP/1.1
>>>> *8-0* 13067 0/125/7795 _ 121.19 13 1759 0.0 0.65 68.27 176.***.10
>>>> http/1.1 www.***.com:8080 POST /wp-admin/admin-ajax.php HTTP/1.1
>>>>
>>>> Apache error logs don't show anything about CPU.
>>>>
>>>>
>>>> 2016-07-28 19:31 GMT+03:00 Guillaume Quintard <
>>>> guillaume at varnish-software.com>:
>>>>
>>>>> You seem to have a good hit ratio, are you seeing anything on the
>>>>> apache logs that would explain the cpu usage?
>>>>>
>>>>> --
>>>>> Guillaume Quintard
>>>>>
>>>>
>>>>
>>>
>>
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>>
>
>
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