Update benchmarks in readme.txt

Benchmarked with the new more isolated system
using siege. The relative rankings are unchanged,
but throughput is higher with siege than with the
janky parallel hey script.

I left WP Redis out because it had inconsistent
showings. It was sometimes very good and sometimes
very bad. I'm not sure if that was a benchmarking
issue or an issue with WP Redis itself, but I'm
leaving it out for now so I don't misrepresent it.
The other plugins have all been very consistent.

Author: john-shaffer

readme.txt

@@ -29,11 +29,10 @@ object cache plugins. It will not break your site if the cache is unreachable, a
 
 Requests per second in a default WordPress installation. Comparison of object cache functionality only.
 
-* **SnapCache v0.2.0 with Memcached - 209.1 req/sec**
-* WP Redis v1.4.6 - 205.2 req/sec
-* Redis Cache v2.7.0 - 196.4 req/sec
-* LiteSpeed v7.6.2 with Redis - 168.2 req/sec
-* LiteSpeed v7.6.2 with Memcached - 163.8 req/sec
+* **SnapCache v0.2.0 with Memcached - 387.0 req/sec**
+* Redis Cache v2.7.0 - 367.1 req/sec
+* LiteSpeed v7.6.2 with Redis - 218.6 req/sec
+* LiteSpeed v7.6.2 with Memcached - 218.0 req/sec
 
 == Requirements ==