Hello Ken'ichi-san, I was talking to Vivek about kdump memory requirements and he mentioned that they vary based on how much system memory is used. I was interested in knowing why that was and again he mentioned that makedumpfile needed lots of memory if it was running on a large machine (for example 1TB of system memory). Looking through the makedumpfile README and using what Vivek remembered of makedumpfile, we gathered that as the number of pages grows, the more makedumpfile has to temporarily store the information in memory. The possible reason was to calculate the size of the file before it was copied to its final destination? I was curious if that was true and if it was, would it be possible to only process memory in chunks instead of all at once. The idea is that a machine with 4Gigs of memory should consume the same the amount of kdump runtime memory as a 1TB memory system. Just trying to research ways to keep the memory requirements consistent across all memory ranges. Thanks, Don
