Method and Apparatus for Analyzing Data Flows
A method of operating a data processing system to display a plurality of list entries is disclosed. Each list entry includes a timestamp, an identifier, and a message. The method includes sorting the list entries by the identifier associated with the list entries and displaying a data flow chart on a display associated with the data processing system. The data flow chart has a plurality of rows. Each row is a graphical view of the list entries having a given identifier. Each row includes a graphical element representing each message and a row label indicating the identifier associated with that row. Each row has a time region representing a time axis on which the graphical elements are placed, each of the graphical elements being placed at a location in the time region determined by the timestamp associated with that message.
1 . A method of operating a data processing system to display a plurality of list entries, each list entry comprising a timestamp, an identifier, and a message, said method comprising:
causing said data processing system to group said list entries by said identifier associated with said list entries; and
generating a data flow chart on a display associated with said data processing system, said data flow chart having a plurality of rows, each row being a graphical view of said list entries having a given identifier, said rows comprising graphical elements representing each message in that row, each row comprising a row label indicating said identifier associated with that row and a time region representing a time axis on which each of said graphical elements is placed, said graphical elements being placed at a location in said time region determined by said timestamp associated with that message.
2 . The method of claim 1 wherein each of said list entries further comprises a duration indicating a time span associated with an action that generated said list entry, and wherein each of said graphical elements has a dimension along said time axis that is determined by said duration.
3 . The method of claim 2 wherein each row having two graphical elements that overlap in time includes a plurality of sub-rows that display said graphical elements such that no two graphical elements overlap in time in any sub-row.
4 . The method of claim 1 wherein each of said list entries further comprises a message type and wherein each of said graphical elements comprises a label that indicates said message type associated with said list entry corresponding to that graphical element.
5 . The method of claim 1 further comprising:
receiving user information indicating a sub-region of said data flow chart and display; and
displaying said message corresponding to each graphical element in said sub-region.
6 . The method of claim 5 wherein said displaying said message comprises generating a table of said list entries corresponding to graphical elements within said sub-region, said table including said message for each of said graphical elements in said sub-region, said identifier corresponding to that message, and said timestamp corresponding to that message.
7 . The method of claim 2 further comprising providing an indication of a number of graphical elements that overlap in time in said graphical view as a function of time as indicated by said timestamps.
8 . The method of claim 7 wherein each of said list entries further comprises a message type and wherein said data processing system displays a message type parallelism graph that represents a degree of parallel processes that is operative when a given message type is operative.
9 . The method of claim 8 wherein said display comprises a plurality of message type parallelism graphs.
10 . The method of claim 9 wherein said message type parallelism graphs are sorted on said display based on a total time messages of each type were active.
11 . The method of claim 9 wherein said message type parallelism graphs are sorted by an indicator specifying a degree of parallelism in said messages of each type.
12 . A computer readable medium comprising instructions that cause a data processing system to execute a method for operating a display that is part of said data processing system to display a plurality of list entries, each list entry comprising a timestamp, an identifier, and a message, said method comprising:
causing said data processing system to group said list entries by said identifier associated with said list entries; and
generating a data flow chart on a display associated with said data processing system, said data flow chart having a plurality of rows, each row being a graphical view of said list entries having a given identifier, said rows comprising graphical elements representing each message on that row, each row comprising a row label indicating said identifier associated with that row and a time region representing a time axis on which said graphical elements are placed, each of said graphical elements being placed at a location in said time region determined by said timestamp associated with that message.
13 . The computer readable medium of claim 12 wherein each of said list entries further comprises a duration indicating a time span associated with an action that generated said list entry, and wherein each of said graphical elements has a dimension along said time axis that is determined by said duration.
14 . The computer readable medium of claim 12 wherein each of said list entries further comprises a message type and wherein each of said graphical elements comprises a label that indicates said message type associated with said list entry corresponding to that graphical element.
15 . The computer readable medium of claim 12 wherein said method further comprises:
receiving user information indicating a sub-region of said data flow chart and display; and
displaying said message corresponding to each graphical element in said sub-region.
16 . The computer readable medium of claim 15 wherein said displaying said message comprises generating a table of said list entries corresponding to graphical elements within said sub-region, said table including said message for each of said graphical elements in said sub-region, said identifier corresponding to that message, and said timestamp corresponding to that message.
17 . The computer readable medium of claim 13 further comprising providing an indication of a number of graphical elements that overlap in time in said graphical view as a function of time as indicated by said timestamps.
18 . The computer readable medium of claim 17 wherein each of said list entries further comprises a message type and wherein said data processing system display a message type parallelism graph that represents a degree of parallel processes that is operative when a given message type is operative.
19 . The computer readable medium of claim 18 wherein said display comprises a plurality of message type parallelism graphs.
20 . The computer readable medium of claim 19 wherein said message type parallelism graphs are sorted by an indicator specifying a degree of parallelism in said messages of each type.