公开(公告)号：AT374971T

公开(公告)日：2007-10-15

申请号：AT02753534

申请日：2002-08-23

Applicant: INTEL CORP

Inventor： AJANOVIC JASMIN ,  HARRIMAN DAVID ,  CAMPBELL RANDOLPH ,  VARGAS JOSE ,  HALL CLIFFORD ,  SETHI PRASHANT ,  PAWLOWSKI STEVE

IPC: G06F13/12 ,  G06F3/00 ,  G06F13/00 ,  G06F13/14 ,  G06F13/24 ,  H04L1/18 ,  H04L47/30

Abstract: A storage device is provided to maintain a count of flow control credits to be granted to a device in association with transactions over a channel to be implemented on a data link and control logic is provided to communicate, to the device, an indication of an amount of flow control credits for the device in association with a reset of the data link.

公开(公告)号：DE602005014774D1

公开(公告)日：2009-07-16

申请号：DE602005014774

申请日：2005-06-14

Applicant: INTEL CORP

Inventor： GALAL GEHAD ,  CAMPBELL RANDOLPH

IPC: G06F9/455

Abstract: Method for selecting a virtualization algorithm to virtualize a context change. An exit-enter time (EET) to exit and enter a context and a save-restore time (SRT) to save and restore a machine state are calculated. A selective algorithm that selectively saves and restores the machine state when there is a change of context is executed. Statistics are accumulated on an expected value for EET overhead plus an expected value for SRT overhead while executing the selective algorithm. A cost of the selective algorithm is computed as the expected value for EET overhead plus the expected value for SRT overhead. The cost of the selective algorithm is compared to two times SRT which is the cost of an unconditional algorithm that always saves and restores the machine state on context changes. One of the selective algorithm or the unconditional algorithm having the least cost is selected as the virtualization algorithm.

公开(公告)号：AT433151T

公开(公告)日：2009-06-15

申请号：AT05784333

申请日：2005-06-14

Applicant: INTEL CORP

Inventor： GALAL GEHAD ,  CAMPBELL RANDOLPH

IPC: G06F9/455

Abstract: Method for selecting a virtualization algorithm to virtualize a context change. An exit-enter time (EET) to exit and enter a context and a save-restore time (SRT) to save and restore a machine state are calculated. A selective algorithm that selectively saves and restores the machine state when there is a change of context is executed. Statistics are accumulated on an expected value for EET overhead plus an expected value for SRT overhead while executing the selective algorithm. A cost of the selective algorithm is computed as the expected value for EET overhead plus the expected value for SRT overhead. The cost of the selective algorithm is compared to two times SRT which is the cost of an unconditional algorithm that always saves and restores the machine state on context changes. One of the selective algorithm or the unconditional algorithm having the least cost is selected as the virtualization algorithm.