Apache Benchmark: This test profile measures how many requests per second a given system can sustain when carrying out 700,000 requests with 100 requests being carried out concurrently. Vanilla 2.6.39.1 x64 kernel: 10758 All grsecurity/PaX features enabled: 8751 +19% All but RBAC: 8436 +22% All but UDEREF: 9652 +10% All but KERNEXEC/UDEREF: 9633 +10% All but KERNEXEC/UDEREF/SANITIZE: 9860 +8% All but KERNEXEC/UDEREF/SANITIZE/STACKLEAK: 10798 +0% For Apache benchmark: STACKLEAK: 8% hit SANITIZE: 2% hit KERNEXEC: 0% hit UDEREF: 9% hit RBAC: -3% hit