Hi - > On our side Francois also told me this afternoon that he didn’t > really reproduce the same thing with my reproducer posted here and > the real systemd-coredump issue he witnessed live, and also noticed > that with DEBUGINFOD_URLS unset/set to the empty string my > reproducer has no problem anymore. [...]
Just doing the math from the debuginfod-client point of view (ignoring other the later systemd side fix that moots this): For an application that processes these elf/dwarf files sequentially, queries for each synthetic solib are going to result in 2000 https-404 transactions, sans debuginfod caching. If you're lucky (reusing a dwfl object), elfutils may be able to reuse a long-lived https connection to a server, otherwise a new https connection might have to be spun up for each. But even with reuse, we're talking about 2000 pingponging messages. That will take a handful of minutes of elapsed time just by itself. If the calling code made these queries in parallel batches, it would be much faster overall. - FChE
