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: 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: 86162 cycles/break: 86456 cycles/break: 85970 cycles/break: 86123 cycles/break: 85898 cycles/break: 86041 cycles/break: 85975 cycles/break: 86733 cycles/break: 85905 cycles/break: 86131 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: 12565886162 cycles/break: 11708486456 cycles/break: 11673385970 cycles/break: 11677286123 cycles/break: 11731785898 cycles/break: 11715886041 cycles/break: 11698785975 cycles/break: 11717386733 cycles/break: 11704885905 cycles/break: 11696186131 The patch that implements the sysctl is here.{F4661598}