Contol: tags -1 + moreinfo unreproducible Hi Ralf,
On Sun, Nov 24, 2024 at 10:45:50AM +0100, Ralf Jung wrote: > Package: linux-perf > Version: 6.11.9-1 > Severity: normal > > Dear Maintainer, > > I am trying to use cargo-flamegraph to produce a flamegraph from perf data. > That > invokes "perf script" and that has now been running already 15 minutes on a > tiny > perf file containing 3300 samples. Something is extremely slow here, making > some > kinds of perf analysis basically impossible. > > Looking around for perf performance issues, I found > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911815, which however is > supposed to have been fixed years ago. But I still see thousands and thousands > of addr2line processes being spawned, so somehow > <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be8ecc57f180415e8a7c1cc5620c5236be2a7e56> > either did not have the desired effect or is not present in current kernels > any > more? > > When I finally killed "perf script", I saw a lot of this kind of output: > > addr2line > /home/r/.debug/.build-id/37/8f73d84f9d89f55dfc18a9ab84bce321cd9b09/elf: could > not read first record > > I don't know whether that could cause the slowdown, or what could cause that > error. Is this still something you can reproduce? Regards, Salvatore
