XCache vs APC PHP 5.4.x

Recently I decided to run some upgrades on my servers, and go up to PHP 5.5. I’ve been using APC for a while (convenience) – usually is also bundled with all available repositories, or you can just grab it via PECL. Before that I was always with XCache. But… as long APC is no lonager maintained (last upgrade 2012) I make a call about going to XCache. Run some benchmarks, and here what we got.

Testing hardware:

2.3 GHz Intel Core i7 – 8GB of ram, SSD drives. Website which I was benchmarking was a have WordPress installation with multiple running scripts.

I run ab -n 100 -c 20

Here is what I got:

 

	apache 1st	apache 2nd	XCache 1st	XCache 2nd	APC 1st	APC 2nd
Time taken for tests [seconds]	11.11	11.11	9.029	9.073	5.474	5.343
Complete requests	100	100	100	100	100	100
Failed requests	69	69	69	41	46	40
Requests per second [#/sec] (mean)	9	9	11.08	11.02	18.27	18.72
Time per request: [ms] (mean)	2221.978	2221.978	1805.76	1814.617	1094.74	1068.568
Transfer rate:[ms] (mean, across all concurrent requests)	111.099	111.099	90.288	90.731	54.737	53.428
Transfer rate[Kbytes/sec] received	420.67	420.67	517.63	515.11	853.83	874.73

 

Surprisingly  XCache is much slower then APC – I was expecting better results, but as long we are losing support for APC in PHP 5.5 doesn’t make any sense to keep it runing.