Re: Re: High Memory usage issue

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Rajkumar - Here is a tip - sending a direct email to solicit hand-holding or consulting is bad form on a public list such as this one, especially when you started with a public thread.

The answer is no to both, either way. To configure event, it's a simple matter of tweaking the following directives:

    StartServers
    MinSpareThreads
    MaxSpareThreads
    ThreadsPerChild
    MaxRequestWorkers
    MaxConnectionsPerChild

Your distro should have sane albeit conservative values for those which should suit your workload, resulting in httpd using no more than 30-40MB in total.

The next step is to configure your php-fpm pools, then use mod_proxy_fcgi to send the php requests to it, as per the wiki article I linked before.

For help with php-fpm, you will need to ask php forums.

On Fri, 27 May 2022 at 12:35, Frank Gingras <thumbs@xxxxxxxxxx> wrote:
I recommend that you refer to the ASF wiki article instead:

https://cwiki.apache.org/confluence/display/HTTPD/PHP-FPM

Other options include fastcgi and fcgid; I strongly recommend to use php-fpm nowadays.

On Fri, 27 May 2022 at 12:30, Deepak Goel <deicool@xxxxxxxxx> wrote:
Google threw out this:


On Fri, May 27, 2022 at 9:17 PM Frank Gingras <thumbs@xxxxxxxxxx> wrote:
Take a step back - the issue is that you are using the mod_php DSO. You do not want to use the DSO, and instead, you want to use mod_proxy_fcgi to interact with a php-fpm instead. You should not have any runtime dependency on php from httpd's point of view.

What you want is enough light httpd threads. With event, you can easily spawn 5000+ workers and use less than 30MB in total.

On Fri, 27 May 2022 at 08:41, Deepak Goel <deicool@xxxxxxxxx> wrote:
i doubt Apache by itself eats that kind of memory (1gb odd). You need to profile (memory) your application to see usage and get rid of objects which are no use to you (or trim them).

On Fri, 27 May 2022, 18:06 Rajkumar Adsule, <radsule@xxxxxxxxxx.invalid> wrote:
ok, then can you please guide me on how to check why apache threads are eating more memory. 


Regards,
Rajkumar Adsule
OpenDoctor
Hello: (347) 686-8581 Extn: 112

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On Fri, May 27, 2022 at 4:23 PM Deepak Goel <deicool@xxxxxxxxx> wrote:
500 to 700 concurrent users is not much. We go upto 1500+ concurrent users with 1GB RAM.


Deepak
"The greatness of a nation can be judged by the way its animals are treated - Mahatma Gandhi"


"Plant a Tree, Go Green"



On Fri, May 27, 2022 at 4:01 PM Rajkumar Adsule <radsule@xxxxxxxxxx.invalid> wrote:
We are running a multi-tenant application on this web server and it's heavily used approx 500 to 700 concurrent users.


Regards,
Rajkumar Adsule
OpenDoctor
Hello: (347) 686-8581 Extn: 112

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On Fri, May 27, 2022 at 2:59 PM Deepak Goel <deicool@xxxxxxxxx> wrote:
1. The best configuration depends on the number of people (users) accessing your webserver, and what kind of things they need to do (how heavy is your application.

2. 40 httpd threads eating 1gb each is a bit tough for me to understand. I use fpm and there are typically 4 processes of them run on my webserver eating about 10MB each. Of Course the load (users) which I cater to is less.

Deepak
"The greatness of a nation can be judged by the way its animals are treated - Mahatma Gandhi"


"Plant a Tree, Go Green"



On Fri, May 27, 2022 at 2:14 PM Rajkumar Adsule <radsule@xxxxxxxxxx.invalid> wrote:
yes, what would be the best configuration for 32CPU and 64GB RAM server, and why it is eating that much memory.

<IfModule mpm_event_module>
    ServerLimit 4000
    StartServers 40
    MinSpareThreads 25
    MaxSpareThreads 2000
    ThreadLimit 64
    ThreadsPerChild 25
    MaxRequestWorkers 4000
    MaxClients 4000
    MaxConnectionsPerChild 0
</IfModule>


Regards,
Rajkumar Adsule
OpenDoctor
Hello: (347) 686-8581 Extn: 112

The content of this email is confidential and intended for the recipient specified in the message only. It is strictly forbidden to share any part of this message with any third party, without the written consent of the sender. If you received this message by mistake, please reply to this message and follow with its deletion, so that we can ensure such a mistake does not occur in the future.




On Fri, May 27, 2022 at 2:10 PM Deepak Goel <deicool@xxxxxxxxx> wrote:
Most of the memory is eaten by https threads. I guess they are about 40 of them eating 1gb each.

Deepak
"The greatness of a nation can be judged by the way its animals are treated - Mahatma Gandhi"


"Plant a Tree, Go Green"



On Fri, May 27, 2022 at 1:45 PM Rajkumar Adsule <radsule@xxxxxxxxxx.invalid> wrote:
Hi,
Please find attached the output of top command 


Regards,
Rajkumar Adsule
OpenDoctor
Hello: (347) 686-8581 Extn: 112

The content of this email is confidential and intended for the recipient specified in the message only. It is strictly forbidden to share any part of this message with any third party, without the written consent of the sender. If you received this message by mistake, please reply to this message and follow with its deletion, so that we can ensure such a mistake does not occur in the future.




On Fri, May 27, 2022 at 1:38 PM Deepak Goel <deicool@xxxxxxxxx> wrote:
Can you run the top command on the server and give us the output?

Deepak
"The greatness of a nation can be judged by the way its animals are treated - Mahatma Gandhi"


"Plant a Tree, Go Green"



On Fri, May 27, 2022 at 1:34 PM Rajkumar Adsule <radsule@xxxxxxxxxx.invalid> wrote:
Please find the output of apachectl -M
$ apachectl -M
Loaded Modules:
 core_module (static)
 so_module (static)
 http_module (static)
 mpm_event_module (static)
 authn_file_module (shared)
 authn_core_module (shared)
 authz_host_module (shared)
 authz_groupfile_module (shared)
 authz_user_module (shared)
 authz_core_module (shared)
 access_compat_module (shared)
 auth_basic_module (shared)
 deflate_module (shared)
 socache_shmcb_module (shared)
 filter_module (shared)
 mime_module (shared)
 log_config_module (shared)
 logio_module (shared)
 env_module (shared)
 expires_module (shared)
 headers_module (shared)
 setenvif_module (shared)
 proxy_module (shared)
 session_module (shared)
 ssl_module (shared)
 unixd_module (shared)
 autoindex_module (shared)
 cgid_module (shared)
 dir_module (shared)
 alias_module (shared)
 rewrite_module (shared)
 php5_module (shared)

$ free -m
             total       used       free     shared    buffers     cached
Mem:         60517      59155       1361        162       7344       6487
-/+ buffers/cache:      45324      15192
Swap:        15358        133      15225

The problem is Memory utilization is always 95% - 98%

Regards,
Rajkumar Adsule
OpenDoctor
Hello: (347) 686-8581 Extn: 112

The content of this email is confidential and intended for the recipient specified in the message only. It is strictly forbidden to share any part of this message with any third party, without the written consent of the sender. If you received this message by mistake, please reply to this message and follow with its deletion, so that we can ensure such a mistake does not occur in the future.




On Fri, May 27, 2022 at 9:43 AM Frank Gingras <thumbs@xxxxxxxxxx> wrote:
Also, I hope you are using the php-fpm approach for the php content, as mixing event and mod_php is a bad idea.

Can you show apachectl -M ?

On Thu, 26 May 2022 at 12:51, Deepak Goel <deicool@xxxxxxxxx> wrote:
What exactly is the problem? Can you please post the error?


Deepak
"The greatness of a nation can be judged by the way its animals are treated - Mahatma Gandhi"


"Plant a Tree, Go Green"



On Thu, May 26, 2022 at 9:54 PM Rajkumar Adsule <radsule@xxxxxxxxxx.invalid> wrote:
Hi Team,

I have a lamp configured with CentOs6.10 , PHP5.4 and Apache 2.4.53 on a GCP Server with Config 32CPU and 64GB RAM.

Configured event mpm with following  values

<IfModule mpm_event_module>
    ServerLimit 4000
    StartServers 40
    MinSpareThreads 25
    MaxSpareThreads 2000
    ThreadLimit 64
    ThreadsPerChild 25
    MaxRequestWorkers 4000
    MaxClients 4000
    MaxConnectionsPerChild 0
</IfModule>

please suggest a solution.


Regards,
Rajkumar Adsule



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