I have been using eaccelerator for a while now and the performance increase is great. I heard of Xcache as well and was wondering if anybody has experience with it vs. Eaccelerator. Just trying to optimize my Gallery2 install the best possible way..thanks for your input!
Make I ask what content your results/thoughts are based on? Just for comparison
There are many sites which have performed benchmarks and published the results, however based on my own benchmarks I saw about 10-15% improvement from xCache but also found that it causes issues for certain scripts (scripts that work fine with eAccelerator).
It fully depends on the application. Some applications run faster with eaccelerator, some run faster with xcache. Heck, some run faster with NO accelerator..weird right?
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Standing to my own test and experience xcache is a lot faster with vbullettin for example. I really can notice the difference simply browsing the vbullettin forum i run on a dedicated quad core server.
Xcache unfortunately tends also to be a bit buggier, so your mileage may vary.
For example I've noticed some strange behaviour with xcache + wordpress (some code - like the tag cloud widget - freezes, meaning it won't update when you publish a new blog post, thus losing interactivity), while eaccelerator performs overall better.
Both xcache and eaccelerator works well as zend modules on standard cpanel apache, where you can't / won't disable the zend memory manager/optimizer, and other eventual stuff depending on that like ionCube loader. This is a big plus compared to other competing software (like apc).
For the ones mentioning xCache faster than eAccelerator - Do you have benchmarks which show the speed increase? I have yet to see any benchmarks which show such an increase from the php accelerator let alone 10-15% from eAccelerator->xCache
The first is with no accelerator, the second with eAccelerator, the third with xCache, the fourth with APC and the fifth was after we optimized the server (Optimized apache, dropped un-needed modules, kernel) the optimized one was using eAccelerator with content caching.
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