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authorvan Hauser <vh@thc.org>2019-05-29 09:42:13 +0200
committervan Hauser <vh@thc.org>2019-05-29 09:42:13 +0200
commit429afb710cb0037f925ea8e9c6c91dfcaa862f45 (patch)
tree74fa97e2543a05dabd3e95782fc366648b641eeb /afl-system-config
parent4e74299d72365c78632476edfacdc1e0590c4a3d (diff)
downloadafl++-429afb710cb0037f925ea8e9c6c91dfcaa862f45.tar.gz
performance script and info
Diffstat (limited to 'afl-system-config')
-rwxr-xr-xafl-system-config15
1 files changed, 15 insertions, 0 deletions
diff --git a/afl-system-config b/afl-system-config
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--- /dev/null
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+#!/bin/sh
+echo This reconfigures the system to have a better fuzzing performance
+sysctl -w kernel.core_pattern=core
+sysctl -w kernel.randomize_va_space=0
+sysctl -w kernel.sched_child_runs_first=1
+sysctl -w kernel.sched_autogroup_enabled=1
+sysctl -w kernel.sched_migration_cost_ns=50000000
+sysctl -w kernel.sched_latency_ns=250000000
+echo never > /sys/kernel/mm/transparent_hugepage/enabled
+echo performance | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor > /dev/null
+echo
+echo It is recommended to boot the kernel with lots of security off - if you are running a machine that is in a secured network - so set this:
+echo '/etc/default/grub:GRUB_CMDLINE_LINUX_DEFAULT="ibpb=off ibrs=off kpti=off l1tf=off mds=off mitigations=off no_stf_barrier noibpb noibrs nopcid nopti nospec_store_bypass_disable nospectre_v1 nospectre_v2 pcid=off pti=off spec_store_bypass_disable=off spectre_v2=off stf_barrier=off"'
+echo
+echo Also use AFL_TMPDIR to use a tmpfs for the input file