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| author | Petr Lautrbach <plautrba@redhat.com> | 2010-12-03 15:49:30 +0100 |
|---|---|---|
| committer | Petr Lautrbach <plautrba@redhat.com> | 2010-12-06 18:21:25 +0100 |
| commit | 99cc28d69058513b17208c13962dead0fa099cc3 (patch) | |
| tree | f5e84f1f288a6e7278d40777451c7840b2e69f67 | |
| parent | fcbae5696738cc0d8cae67140ee43e2c1fba1db5 (diff) | |
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sysctl.conf.s390 - system z optimized sysctl settings per default (#633323)
| -rw-r--r-- | sysctl.conf.s390 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sysctl.conf.s390 b/sysctl.conf.s390 index 0ddc1d55..dc7d085a 100644 --- a/sysctl.conf.s390 +++ b/sysctl.conf.s390 @@ -15,3 +15,16 @@ net.ipv4.conf.default.accept_source_route = 0 # Controls whether core dumps will append the PID to the core filename. # Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1 + +# Controls the use of TCP syncookies +net.ipv4.tcp_syncookies = 1 + +# Do not spend as much process time too early to write out dirty pages +vm.dirty_ratio = 40 + +# Increase the average time a process runs continuously and also improve the +# cache utilization and server style workload throughput at minor latency cost +kernel.sched_min_granularity_ns = 10000000 +kernel.sched_wakeup_granularity_ns = 15000000 +kernel.sched_tunable_scaling = 0 +kernel.sched_latency_ns = 80000000 |