Abstract: A method comprising: counting each occurrence of a hardware event by a Performance Monitoring Counter of a hardware processor during the execution of a target program code; orderly and continuously storing in a buffer of a Taken Branch Trace (TBT) Facility of said hardware processor a predefined TBT size of last taken branches of said target program code during its execution; every time said counting equals a sampling rate, triggering sampling of said buffer, to receive a TBT comprising current said predefined TBT size of last taken branches; constructing a full branch trace for each said TBT based on said target program code; extracting a predefined Chopped Branch Trace (CBT) size of last branches from each said full branch trace, to receive a chopped branch trace for said each TBT; and incrementally storing each said chopped branch trace to generate an edge profile of said target program code.

Abstract: A method comprising: counting each occurrence of a hardware event by a Performance Monitoring Counter of a hardware processor during the execution of a target program code; orderly and continuously storing in a buffer of a Taken Branch Trace (TBT) Facility of said hardware processor a predefined TBT size of last taken branches of said target program code during its execution; every time said counting equals a sampling rate, triggering sampling of said buffer, to receive a TBT comprising current said predefined TBT size of last taken branches; constructing a full branch trace for each said TBT based on said target program code; extracting a predefined Chopped Branch Trace (CBT) size of last branches from each said full branch trace, to receive a chopped branch trace for said each TBT; and incrementally storing each said chopped branch trace to generate an edge profile of said target program code.

Abstract: Batch processing machines, systems and methods are provided. The method comprises copying target data from a target location to a first data storage medium, wherein the target data stored in the first data storage medium is utilized by a batch process; executing the batch process; checkpointing state information for the batch process at one or more time intervals while the batch process is executing; determining whether a data record in the target data stored in the target location was updated while the batch process was executing; and reinstating the batch process from a point in time prior to an earliest point in the batch process when a representation of an updated data record in the target data in the target location was accessed by the batch process.

Abstract: Batch processing machines, systems and methods are provided. The method comprises copying target data from a target location to a first data storage medium, wherein the target data stored in the first data storage medium is utilized by a batch process; executing the batch process; checkpointing state information for the batch process at one or more time intervals while the batch process is executing; determining whether a data record in the target data stored in the target location was updated while the batch process was executing; and reinstating the batch process from a point in time prior to an earliest point in the batch process when a representation of an updated data record in the target data in the target location was accessed by the batch process.