Modify hpcc to use 80% of available memory rather than 80% of all memory on the system.
Modify hpcc to use 80% of available memory rather than
80% of all memory on the system.

tvansteenburgh/PerfKitBenchmarker,emaeliena/PerfKitBenchmarker,emaeliena/PerfKitBenchmarker,syed/PerfKitBenchmarker,ehankland/PerfKitBenchmarker,ksasi/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,mateusz-blaszkowski/PerfKitBenchmarker,tvansteenburgh/PerfKitBenchmarker,lleszczu/PerfKitBenchmarker,gablg1/PerfKitBenchmarker,meteorfox/PerfKitBenchmarker,askdaddy/PerfKitBenchmarker,msurovcak/PerfKitBenchmarker,gablg1/PerfKitBenchmarker,msurovcak/PerfKitBenchmarker,AdamIsrael/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,lleszczu/PerfKitBenchmarker,askdaddy/PerfKitBenchmarker,kivio/PerfKitBenchmarker,kivio/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,syed/PerfKitBenchmarker,ehankland/PerfKitBenchmarker,juju-solutions/PerfKitBenchmarker,ksasi/PerfKitBenchmarker,meteorfox/PerfKitBenchmarker,AdamIsrael/PerfKitBenchmarker,juju-solutions/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,mateusz-blaszkowski/PerfKitBenchmarker