Memory leak issue, possibly because PHP APC add on.

I noticed that when I enabled APC it spawn so many apache process and it can consume memory really quickly. Our client server crashed twice because it ran out of memory.

Setup:
Linux CentOS 7
MariaDB
Apache 2.2
php 5.4.16 with APC
enabled JSMIN.
CPU : 4 cores
RAM : 12 GB

When I disabled the APC add on I didn't have that many apache processes being spawned and the RAM is hardly go beyond 3GB. I was doing a mass update that update the Account record and ALL of its related records, this is a massive operations but it didn't go beyond 3GB in terms of memory use when I have the APC disabled.

When I turned it on it was easily jumped from 2 GB to 6 GB.
is there a known issues with APC add on that you guys are aware off?

Parents

0 Alex Nassi over 9 years ago

This issue has been reported to our engineering team and is currently being investigated. The bug report is available as #73342. More information will be available as our team investigates this further.

Alex Nassi
Digital CX Operations Director
SugarCRM
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0 Doddy Amijaya over 9 years ago in reply to Alex Nassi

Hi Alex,
I am glad and not so glad to hear that. I thought I am the only one having this issue.
Although on that bug report, it says it reported on version 7.5.2.1 while our customer is on 7.5.1.0 does it matter?
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0 Justin Kuehlthau over 9 years ago in reply to Doddy Amijaya

We see this issue a lot when using APC and making Studio changes. I hope it gets fixed soon!
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0 Doddy Amijaya over 9 years ago in reply to Justin Kuehlthau

You are absolutely right! our customer crashed just yesterday when he makes some trivial changes in Studio.
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0 Mark Willert over 9 years ago in reply to Doddy Amijaya

Hi Doddy,
I doubt APC is fixed anytime soon, Sugar even removed APc from the recommended stack:
Version 7.6.0.0 Released!
That said, I amd recommending using Zend Opcache instead of APC even for SugarCRM 7.5. It is available for CentOS 7 from the EPEL respository (in CentOS, you can install the package epel-release, then php-pecl-zendopcache).
Please take Harold Masselinks advice when configuring it!
Greets
Mark
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0 Mark Willert over 9 years ago in reply to Doddy Amijaya

Hi Doddy,
I doubt APC is fixed anytime soon, Sugar even removed APc from the recommended stack:
Version 7.6.0.0 Released!
That said, I amd recommending using Zend Opcache instead of APC even for SugarCRM 7.5. It is available for CentOS 7 from the EPEL respository (in CentOS, you can install the package epel-release, then php-pecl-zendopcache).
Please take Harold Masselinks advice when configuring it!
Greets
Mark
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