Change Details

Peter Holm has reported that a 5-hour test of this patch revealed no problems. I defined a sysctl to create reservations with every 17th page allocated, and then to check for the availability of 16 pages on a 16 page boundary. Ten samples without this change: cycles/break: 2769630 cycles/break: 2586584 cycles/break: 2585703 cycles/break: 2587762 cycles/break: 2585641 cycles/break: 2587068 cycles/break: 2586093 cycles/break: 2585840 cycles/break: 2587580 cycles/break: 2586152 Ten samples after this change: cycles/break: 64131 cycles/break: 73229 cycles/break: 73250 cycles/break: 73211 cycles/break: 73175 cycles/break: 73325 cycles/break: 73113 cycles/break: 73166 cycles/break: 73115 cycles/break: 73212 The patch that implements the sysctl is here.{F4661598}

Peter Holm has reported that a 5-hour test of this patch revealed no problems. I defined a sysctl to create reservations with every 17th page allocated, and then to check for the availability of 16 pages on a 16 page boundary. Ten samples without this change: cycles/break: 2769630 cycles/break: 2586584 cycles/break: 2585703 cycles/break: 2587762 cycles/break: 2585641 cycles/break: 2587068 cycles/break: 2586093 cycles/break: 2585840 cycles/break: 2587580 cycles/break: 2586152 Ten samples after this change: cycles/break: 125658 cycles/break: 117084 cycles/break: 116733 cycles/break: 116772 cycles/break: 117317 cycles/break: 117158 cycles/break: 116987 cycles/break: 117173 cycles/break: 117048 cycles/break: 116961 The patch that implements the sysctl is here.{F4661598}

Peter Holm has reported that a 5-hour test of this patch revealed no problems. I defined a sysctl to create reservations with every 17th page allocated, and then to check for the availability of 16 pages on a 16 page boundary. Ten samples without this change: cycles/break: 2769630 cycles/break: 2586584 cycles/break: 2585703 cycles/break: 2587762 cycles/break: 2585641 cycles/break: 2587068 cycles/break: 2586093 cycles/break: 2585840 cycles/break: 2587580 cycles/break: 2586152 Ten samples after this change: cycles/break: 64131125658 cycles/break: 73229117084 cycles/break: 73250116733 cycles/break: 73211116772 cycles/break: 1173175 cycles/break: 73325117158 cycles/break: 73113116987 cycles/break: 73166117173 cycles/break: 73115117048 cycles/break: 73212116961 The patch that implements the sysctl is here.{F4661598}