config: Reduce DRAM controller regression traffic rate
config: Reduce DRAM controller regression traffic rate

This patch changes the traffic generator period such that it does not
completely saturate the DRAM controller and create an ever-growing
backlog in the queued port.

A separate patch updates the stats.

powerjg/gem5-ci-test,austinharris/gem5-riscv,qizenguf/MLC-STT,sobercoder/gem5,gedare/gem5,rjschof/gem5,TUD-OS/gem5-dtu,rjschof/gem5,sobercoder/gem5,kaiyuanl/gem5,markoshorro/gem5,gedare/gem5,qizenguf/MLC-STT,TUD-OS/gem5-dtu,joerocklin/gem5,powerjg/gem5-ci-test,gedare/gem5,briancoutinho0905/2dsampling,gem5/gem5,austinharris/gem5-riscv,samueldotj/TeeRISC-Simulator,gedare/gem5,powerjg/gem5-ci-test,samueldotj/TeeRISC-Simulator,gem5/gem5,cancro7/gem5,HwisooSo/gemV-update,TUD-OS/gem5-dtu,rallylee/gem5,aclifton/cpeg853-gem5,yb-kim/gemV,cancro7/gem5,kaiyuanl/gem5,austinharris/gem5-riscv,sobercoder/gem5,aclifton/cpeg853-gem5,aclifton/cpeg853-gem5,qizenguf/MLC-STT,KuroeKurose/gem5,briancoutinho0905/2dsampling,KuroeKurose/gem5,qizenguf/MLC-STT,rjschof/gem5,powerjg/gem5-ci-test,samueldotj/TeeRISC-Simulator,sobercoder/gem5,kaiyuanl/gem5,HwisooSo/gemV-update,yb-kim/gemV,cancro7/gem5,cancro7/gem5,powerjg/gem5-ci-test,gem5/gem5,markoshorro/gem5,samueldotj/TeeRISC-Simulator,markoshorro/gem5,KuroeKurose/gem5,briancoutinho0905/2dsampling,austinharris/gem5-riscv,Weil0ng/gem5,KuroeKurose/gem5,sobercoder/gem5,yb-kim/gemV,gem5/gem5,TUD-OS/gem5-dtu,zlfben/gem5,Weil0ng/gem5,SanchayanMaity/gem5,Weil0ng/gem5,rjschof/gem5,yb-kim/gemV,Weil0ng/gem5,qizenguf/MLC-STT,briancoutinho0905/2dsampling,kaiyuanl/gem5,sobercoder/gem5,Weil0ng/gem5,rallylee/gem5,rallylee/gem5,Weil0ng/gem5,HwisooSo/gemV-update,zlfben/gem5,aclifton/cpeg853-gem5,joerocklin/gem5,yb-kim/gemV,kaiyuanl/gem5,HwisooSo/gemV-update,yb-kim/gemV,gem5/gem5,rallylee/gem5,gedare/gem5,markoshorro/gem5,cancro7/gem5,briancoutinho0905/2dsampling,rallylee/gem5,zlfben/gem5,aclifton/cpeg853-gem5,TUD-OS/gem5-dtu,SanchayanMaity/gem5,rjschof/gem5,KuroeKurose/gem5,markoshorro/gem5,powerjg/gem5-ci-test,yb-kim/gemV,rjschof/gem5,joerocklin/gem5,markoshorro/gem5,briancoutinho0905/2dsampling,joerocklin/gem5,Weil0ng/gem5,qizenguf/MLC-STT,HwisooSo/gemV-update,gedare/gem5,gedare/gem5,HwisooSo/gemV-update,KuroeKurose/gem5,sobercoder/gem5,cancro7/gem5,qizenguf/MLC-STT,joerocklin/gem5,joerocklin/gem5,SanchayanMaity/gem5,austinharris/gem5-riscv,gem5/gem5,joerocklin/gem5,joerocklin/gem5,cancro7/gem5,austinharris/gem5-riscv,briancoutinho0905/2dsampling,TUD-OS/gem5-dtu,rjschof/gem5,TUD-OS/gem5-dtu,SanchayanMaity/gem5,yb-kim/gemV,zlfben/gem5,rallylee/gem5,powerjg/gem5-ci-test,samueldotj/TeeRISC-Simulator,SanchayanMaity/gem5,samueldotj/TeeRISC-Simulator,KuroeKurose/gem5,samueldotj/TeeRISC-Simulator,aclifton/cpeg853-gem5,austinharris/gem5-riscv,kaiyuanl/gem5,kaiyuanl/gem5,markoshorro/gem5,SanchayanMaity/gem5,SanchayanMaity/gem5,gem5/gem5,zlfben/gem5,zlfben/gem5,zlfben/gem5,rallylee/gem5,aclifton/cpeg853-gem5,HwisooSo/gemV-update