PHP with open_basedir performance problem

[Hugo Silva]

Hugo Silva wrote:
> Hugo Silva wrote:
>> Miroslav Lachman wrote:
>>> Hi all,
>>>
>>> I found a painful performance problem with Apache + PHP 5 when
>>> open_basedir directive is enabled.
>>> Application performance drops by more than 50% with open_basedir 
>>> enabled.
>>> There is also significant disproportion between usr / sys CPU load. 
>>> (sys
>>> is much higher than usr)
>>> I do not know if this is problem on FreeBSD side or in PHP code itself.
>>> This problem exists on FreeBSD 6 and 7 (maybe older versions too - I 
>>> did
>>> not check).
>>> I tested both shedulers on FreeBSD 7, no big difference (application
>>> performance is little better with 4BSD).
>>> Is there anyone with enough knowledge and time to look at it?
>>>
>>> This problem affects Mac OS X as well, but does not seem to appear 
>>> on Linux.
>>> http://lists.apple.com/archives/macos-x-server/2006/Nov/msg00623.html
>>
>> I too have seen this, sys% is so MUCH higher and jumps from about 30% 
>> to 70% and higher all the time. In my case it's like 3% user time, 
>> 30-70% system time. I will try disabling open_basedir on one of the 
>> webservers and report back.
>>
>> Best regards,
>>
>> Hugo
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>
> From 30-70% to 3%. What a difference!
>
> Hugo
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http://bugs.php.net/bug.php?id=43946