xcat-core/xCAT-IBMhpc/share/xcat/IBMhpc/ml-tuning
2012-08-30 15:06:01 +00:00

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#!/usr/bin/ksh
#
# example postscript to tune ml interface for improved stability and performance
#
chdev -l mlt0 -a agg_killtime=-1 2>/dev/null # allow "agg_interval" and "agg_threshold" to default
# The effect of the above is that complete ml route entries last forever, incomplete entries time out
# in 40 seconds, and there are no keepalive probes for complete entries (to reduce OS jitter).
# The following is also recommended to improve balance across hf interfaces (assuming sequential ml
# addressing, at least within each drawer). Note that "agg_hash" must be set PRIOR to the ml interface
# being configured.
chdev -l mlt0 -a agg_hash=2 2>/dev/null