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NGINX / PHP-FPM: Ajax slow first request, good next ones

PHP-FPM with nginx load balancing long request blocks all other requestsPHP-FPM process timeouts but NGINX does not close the session with ClientSuggest me a good php-fpm configuartionLatency, Nginx & PHP-FPMnginx & php-fpm very slow on first accessNginx PHP-FPM stops after connection timeoutWhat's the Relationship Between an nginx worker_process and PHP-FPMNGINX error when using external PHP-FPMNGinX + PHP-FPM Microservices deadlockNginx and PHP-FPM concurrent requests from same IP

2

• The CMS is Elxis, which comes from a variant of Joomla (PHP).


• The server is running nGinx with PHP-FPM
  


• All requests get logged and executed, eventually, B U T!!!

When firing a specific request via the URL bar, the request gets executed immediately. However, when fired via ajax (through jQuery), the same request has a very strange behaviour.

Namely: First request (on a media manager), to view picture details, is to be fired with Ajax. It is logged on the browser, but not on the server... Not just yet... After some good 40-50 seconds, the request appears on the server and then it is responded immediately.

All following requests are executed immediately, no problem. Only the first one is rough..

I am in trouble because there is not any error logged anywhere: Everything seems sane, except for the lag of the first request to reach the server...

It is not routing (the site is already up and requests have been served), it is not resolution (the ip is in my /etc/hosts file).

And to add a little cherry on top of the cake, trying to capture packets (tcpdump) on the server produces no output: The request is not here yet...
Tried on client too: no output - for at least 40 secs...

It's all on the browser, developer console shows no error, just a pending request.

Does any of this ring a bell to anyone?

The server:

nginx version: nginx/1.6.2

PHP 5.6.7-1 (cli)

PHP 5.6.7-1 (fpm-fcgi)

jQuery version 1.11

The client: tried on Firefox 39 (ubuntu) and Chromium 41

Note: I've asked the same question on stackoverflow, as I can't clearly figure if it's code or architecture to blame...

nginx php-fpm ajax

share|improve this question

asked Apr 10 '15 at 15:39

Stavros SouvatzisStavros Souvatzis

1185

bumped to the homepage by Community♦ 13 hours ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Duplicate posted on Stack Overflow: NGINX / PHP-FPM: Ajax slow first request, good next ones
  
  – Paul
  Apr 10 '15 at 20:57
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Paul, yes, read my footnote, please...
  
  – Stavros Souvatzis
  Apr 11 '15 at 7:31
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hey, any news ?
  
  – Etienne Gautier
  Jul 10 '17 at 8:59
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  No, no news. I do not run the project anymore. Somehow though, I think it's stopped happening.
  
  – Stavros Souvatzis
  Jul 10 '17 at 12:33
  

  
  
  
  

add a comment | 

2

• The CMS is Elxis, which comes from a variant of Joomla (PHP).


• The server is running nGinx with PHP-FPM
  


• All requests get logged and executed, eventually, B U T!!!

When firing a specific request via the URL bar, the request gets executed immediately. However, when fired via ajax (through jQuery), the same request has a very strange behaviour.

Namely: First request (on a media manager), to view picture details, is to be fired with Ajax. It is logged on the browser, but not on the server... Not just yet... After some good 40-50 seconds, the request appears on the server and then it is responded immediately.

All following requests are executed immediately, no problem. Only the first one is rough..

I am in trouble because there is not any error logged anywhere: Everything seems sane, except for the lag of the first request to reach the server...

It is not routing (the site is already up and requests have been served), it is not resolution (the ip is in my /etc/hosts file).

And to add a little cherry on top of the cake, trying to capture packets (tcpdump) on the server produces no output: The request is not here yet...
Tried on client too: no output - for at least 40 secs...

It's all on the browser, developer console shows no error, just a pending request.

Does any of this ring a bell to anyone?

The server:

nginx version: nginx/1.6.2

PHP 5.6.7-1 (cli)

PHP 5.6.7-1 (fpm-fcgi)

jQuery version 1.11

The client: tried on Firefox 39 (ubuntu) and Chromium 41

Note: I've asked the same question on stackoverflow, as I can't clearly figure if it's code or architecture to blame...

nginx php-fpm ajax

share|improve this question

asked Apr 10 '15 at 15:39

Stavros SouvatzisStavros Souvatzis

1185

bumped to the homepage by Community♦ 13 hours ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Duplicate posted on Stack Overflow: NGINX / PHP-FPM: Ajax slow first request, good next ones
  
  – Paul
  Apr 10 '15 at 20:57
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Paul, yes, read my footnote, please...
  
  – Stavros Souvatzis
  Apr 11 '15 at 7:31
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hey, any news ?
  
  – Etienne Gautier
  Jul 10 '17 at 8:59
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  No, no news. I do not run the project anymore. Somehow though, I think it's stopped happening.
  
  – Stavros Souvatzis
  Jul 10 '17 at 12:33
  

  
  
  
  

add a comment | 

• The CMS is Elxis, which comes from a variant of Joomla (PHP).


• The server is running nGinx with PHP-FPM
  


• All requests get logged and executed, eventually, B U T!!!

When firing a specific request via the URL bar, the request gets executed immediately. However, when fired via ajax (through jQuery), the same request has a very strange behaviour.

Namely: First request (on a media manager), to view picture details, is to be fired with Ajax. It is logged on the browser, but not on the server... Not just yet... After some good 40-50 seconds, the request appears on the server and then it is responded immediately.

All following requests are executed immediately, no problem. Only the first one is rough..

I am in trouble because there is not any error logged anywhere: Everything seems sane, except for the lag of the first request to reach the server...

It is not routing (the site is already up and requests have been served), it is not resolution (the ip is in my /etc/hosts file).

And to add a little cherry on top of the cake, trying to capture packets (tcpdump) on the server produces no output: The request is not here yet...
Tried on client too: no output - for at least 40 secs...

It's all on the browser, developer console shows no error, just a pending request.

Does any of this ring a bell to anyone?

The server:

nginx version: nginx/1.6.2

PHP 5.6.7-1 (cli)

PHP 5.6.7-1 (fpm-fcgi)

jQuery version 1.11

The client: tried on Firefox 39 (ubuntu) and Chromium 41

Note: I've asked the same question on stackoverflow, as I can't clearly figure if it's code or architecture to blame...

nginx php-fpm ajax

share|improve this question

asked Apr 10 '15 at 15:39

Stavros SouvatzisStavros Souvatzis

1185

The server:

nginx version: nginx/1.6.2

PHP 5.6.7-1 (cli)

PHP 5.6.7-1 (fpm-fcgi)

share|improve this question

asked Apr 10 '15 at 15:39

Stavros SouvatzisStavros Souvatzis

1185

share|improve this question

asked Apr 10 '15 at 15:39

Stavros SouvatzisStavros Souvatzis

1185

asked Apr 10 '15 at 15:39

Stavros SouvatzisStavros Souvatzis

1185

asked Apr 10 '15 at 15:39

Stavros SouvatzisStavros Souvatzis

1185

1 Answer
1

active

oldest

votes

0

I faced similar kind of problem and i ended up increasing number of php-fpm workers. I used the following settings in www.conf (pool.d) to solve the problem i was facing. I had an analytics server setup which was tracking pageviews and there was a delay of 15-20s in API recording the pageviews. Tuning the following settings solved my problem, maybe it might help you.

pm = dynamic

pm.max_children = 5

pm.start_servers = 2

pm.min_spare_servers = 1

pm.max_spare_servers = 3

share|improve this answer

answered Feb 2 '18 at 21:51

Mohd Asim SuhailMohd Asim Suhail

1011

add a comment | 

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0

I faced similar kind of problem and i ended up increasing number of php-fpm workers. I used the following settings in www.conf (pool.d) to solve the problem i was facing. I had an analytics server setup which was tracking pageviews and there was a delay of 15-20s in API recording the pageviews. Tuning the following settings solved my problem, maybe it might help you.

pm = dynamic

pm.max_children = 5

pm.start_servers = 2

pm.min_spare_servers = 1

pm.max_spare_servers = 3

share|improve this answer

answered Feb 2 '18 at 21:51

Mohd Asim SuhailMohd Asim Suhail

1011

add a comment | 

0

I faced similar kind of problem and i ended up increasing number of php-fpm workers. I used the following settings in www.conf (pool.d) to solve the problem i was facing. I had an analytics server setup which was tracking pageviews and there was a delay of 15-20s in API recording the pageviews. Tuning the following settings solved my problem, maybe it might help you.

pm = dynamic

pm.max_children = 5

pm.start_servers = 2

pm.min_spare_servers = 1

pm.max_spare_servers = 3

share|improve this answer

answered Feb 2 '18 at 21:51

Mohd Asim SuhailMohd Asim Suhail

1011

add a comment | 

I faced similar kind of problem and i ended up increasing number of php-fpm workers. I used the following settings in www.conf (pool.d) to solve the problem i was facing. I had an analytics server setup which was tracking pageviews and there was a delay of 15-20s in API recording the pageviews. Tuning the following settings solved my problem, maybe it might help you.

pm = dynamic

pm.max_children = 5

pm.start_servers = 2

pm.min_spare_servers = 1

pm.max_spare_servers = 3

share|improve this answer

answered Feb 2 '18 at 21:51

Mohd Asim SuhailMohd Asim Suhail

1011

pm = dynamic

pm.max_children = 5

pm.start_servers = 2

pm.min_spare_servers = 1

pm.max_spare_servers = 3

share|improve this answer

answered Feb 2 '18 at 21:51

Mohd Asim SuhailMohd Asim Suhail

1011

answered Feb 2 '18 at 21:51

Mohd Asim SuhailMohd Asim Suhail

1011

answered Feb 2 '18 at 21:51

Mohd Asim SuhailMohd Asim Suhail

1011