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Reply to topic   Topic: Php opcache fluctuating page generation time
Author
Steffen
Moderator


Joined: 15 Oct 2005
Posts: 2828
Location: Hilversum, NL, EU

PostPosted: Tue 09 Jul '13 21:24    Post subject: Php opcache fluctuating page generation time Reply with quote

Running some tests with the new opcache in php 5.5.

Noticed that the page generation time fluctuates quite much, by refreshing the page every second:

Min: Page generation time: 0.0063s - SQL queries: 14
Max: Page generation time: 0.0166s - SQL queries: 14

With 5.2 and Wincache it is quite steady and fluctuates from 0.0062s - 0.0073s

Running same scipt under the same Apache Win32, one vhost 5.5 with opcache and one vhost 5.2 with wincache

Steffen
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 6786
Location: Germany, Next to Hamburg

PostPosted: Wed 10 Jul '13 14:00    Post subject: Reply with quote

There is a hughe difference from 5.2 to 5.5. It's like Win XP to Win 8.

Does the generation time also varies with 5.5 without opcache?
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Steffen
Moderator


Joined: 15 Oct 2005
Posts: 2828
Location: Hilversum, NL, EU

PostPosted: Wed 10 Jul '13 14:39    Post subject: Reply with quote

No so much variations when opcache disabled:

5.5 NTS No opcache:
Min: Page generation time: 0.0204s
Max: Page generation time: 0.0214s

5.5 NTS With opcache:
Min: Page generation time: 0.0063s
Max: Page generation time: 0.0166s

5.2 NTS with wincache:
Min: Page generation time: 0.0062s
Max: Page generation time: 0.0073s

The script page generation time is a copy of the forum here with the google stuff removed. And it measures the time of the forum index page.

Steffen
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