> Hello Leon, > > I feel that it's a bug because I don't understand why is this module/option > allocating 6GB of RAM without any explicit configuration or usage from us. > It's also worth mentioning that we are using the default linux-image from > Debian bookworm, and it took us a long time to understand the reason > behind this memory increase by bisecting the kernel's config file. > Moreover the documentation of the module doesn't mention anything > regarding additional memory usage, we're talking about an increase of 6Gb > which is huge since we're not using the option. > So is that an expected behavior, to have this much increase in the memory > consumption, when activating the RDMA option even if we're not using it ? If > that's the case, perhaps it would be good to mention this in the > documentation. > > Thank you > Hi Brian, I do not think it is a bug. The high memory usage seems to come from these lines: rsrc_size = irdma_calc_mem_rsrc_size(rf); rf->mem_rsrc = vzalloc(rsrc_size); inside of irdma_initialize_hw_rsrc function. You can read the code of irdma_calc_mem_rsrc_size to understand the 6GB memory usage. You can ask developers of irdma to optimize memory usage. Btw., module is loaded == module is used. There is no "loaded and unused". Konstantin
