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Sunny Bains authored
Variance-Aware Transaction Scheduling (VATS) is described in https://arxiv.org/pdf/1602.01871.pdf . The patch was contributed by Jiamin Huang <jiamin@umich.edu> and Barzan Mozafari <mozafari@umich.edu> from the University of Michigan. When granting locks the grant strategy used depends on the number of waiting locks. If it is >= 32 then VATS will be used otherwise the original first come first served (FCFS) strategy will be used. The threshold of 32 was chosen after empirical verification on a supra class machine. Ideally we would like to default to VATS for all loads but a small regression was seen on the lower loads. Reviewed-by:
Jimmy <jimmy.yang@oracle.com> Reviewed-by:
Deb <debarun.banerjee@oracle.com> RB:16290
Sunny Bains authoredVariance-Aware Transaction Scheduling (VATS) is described in https://arxiv.org/pdf/1602.01871.pdf . The patch was contributed by Jiamin Huang <jiamin@umich.edu> and Barzan Mozafari <mozafari@umich.edu> from the University of Michigan. When granting locks the grant strategy used depends on the number of waiting locks. If it is >= 32 then VATS will be used otherwise the original first come first served (FCFS) strategy will be used. The threshold of 32 was chosen after empirical verification on a supra class machine. Ideally we would like to default to VATS for all loads but a small regression was seen on the lower loads. Reviewed-by:
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