Bug #75579 [Com]: All Interned Strings Free memory used and PHP crashes

From: Date: Thu, 21 Dec 2017 12:05:14 +0000
Subject: Bug #75579 [Com]: All Interned Strings Free memory used and PHP crashes
References: 1  Groups: php.bugs 
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Edit report at https://bugs.php.net/bug.php?id=75579&edit=1 ID: 75579 Comment by: post at minhost dot no Reported by: post at minhost dot no Summary: All Interned Strings Free memory used and PHP crashes Status: Analyzed Type: Bug Package: opcache Operating System: CentOS 7.4 PHP Version: 7.1.12 Assigned To: dmitry Block user comment: N Private report: N New Comment: Ok, thanks for explainging it to me, @dmitry. Sorry I misunderstood the change. I will test your newest patch later tonight, and let you know if it works correct for me. Previous Comments: ------------------------------------------------------------------------ [2017-12-21 12:01:34] dmitry@php.net This is not a new feature. file cache worked in this way, if it wasn't able to allocate enough shared memory for the script at once, but it didn't allocate additional blocks for "overflowing" interned strings before (this was the bug). With the first patch, if there is no enough memory for "overflowing" interned string, we fall-back to recompilation from source. With the second patch we still load precompiled version from file, but not to shared but regular memory. ------------------------------------------------------------------------ [2017-12-21 12:00:41] post at minhost dot no And the answer is: When SHM is full, don't do anything new regarding file cache on disk, but keep it the way it was working in PHP 7.1.11 ------------------------------------------------------------------------ [2017-12-21 11:55:39] spam2 at rhsoft dot net > The file cache on disk should be exactly that, on disk, not in memory the primary opcache is always memory - normally SHM - the file cache is *optional* to survive restarts/reboots without the need to compile each script again the point here is: what to do when the SHM is full ------------------------------------------------------------------------ [2017-12-21 11:55:02] post at minhost dot no I think your new patch is not related to this bug, I think it is a new feature you are adding, and I don't like it. It has been enough trouble now. Please consider to not add this new feature, then we have to study and test your new feature a lot before using it in production. It works correct with your first patch, no need to change behaviour with a new feature. ------------------------------------------------------------------------ [2017-12-21 11:52:13] post at minhost dot no I am not sure I completely understand you correct. However it makes me worry. Please note that the first patch fixed the problem reported in this bug. Then I made a mistake in a reply, wich I corrected in a new reply, confirming that is now works correct. File cache on disk works correct with your first patch, it works correct and the same way as in PHP 7.1.11 wich do not have the bug. So I don't understand what else you are trying to fix? The file cache on disk should be exactly that, on disk, not in memory. And it works correct with your first patch. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=75579 -- Edit this bug report at https://bugs.php.net/bug.php?id=75579&edit=1

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