Accelerating system dump capturing

A method for accelerating capturing a system dump at system failure in a computer system, the method comprising:

• capturing, by a snapshot accelerator, a system snapshot that comprises data from real memory frames of the computer system;
• storing, by the snapshot accelerator, the system snapshot in an external storage;
• determining, by the snapshot accelerator, a delta between the system snapshot and a current state of the real memory frames of the computer system, the delta identifying changed real memory frames;
• determining, by the snapshot accelerator, an order for updating a plurality of portions of the system snapshot using corresponding portions from the delta;
• updating, by the snapshot accelerator, at least a first subset of the portions of the system snapshot during a predetermined time duration according to the order for updating and skipping the updating of a second subset of the portions upon expiry of the predetermined duration;
• and
• in response to encountering the system failure:
• determining, by the snapshot accelerator, a change between the data in the system snapshot and the current state of the real memory frames of the computer system;
• updating by the snapshot accelerator the snapshot on the external storage according to the changed real memory frames;
• and
• using the snapshot on the external storage as the system dump.