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. Kind regards, Ralf -- System Information: Debian Release: trixie/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 6.11.4-amd64 (SMP w/20 CPU threads; PREEMPT) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages linux-perf depends on: ii libbabeltrace1 1.5.11-4 ii libc6 2.40-3 ii libcap2 1:2.66-5+b1 ii libdebuginfod1t64 0.192-4 ii libdw1t64 0.192-4 ii libelf1t64 0.192-4 ii liblzma5 5.6.3-1+b1 ii libnuma1 2.0.18-1+b1 ii libopencsd1 1.5.2-1+b1 ii libperl5.40 5.40.0-6 ii libpython3.12t64 3.12.7-3 ii libslang2 2.3.3-5+b1 ii libstdc++6 14.2.0-6 ii libtraceevent1 1:1.8.4-1 ii libunwind8 1.6.2-3.1 ii libzstd1 1.5.6+dfsg-1+b1 ii perl 5.40.0-6 ii python3 3.12.6-1 ii zlib1g 1:1.3.dfsg+really1.3.1-1+b1 linux-perf recommends no packages. Versions of packages linux-perf suggests: pn linux-doc-6.11 <none> -- no debconf information
