------- Comment From [email protected] 2026-06-02 05:02 EDT------- (In reply to comment #9) > Hello Mete, thanks for this report. > We were pretty aggressive to get the latest kernel 7.0.0 into 26.04. > Hence we already have a newer kernel available compared to the kernel that > you used. > Latest in resolute updates is: > linux-generic | 7.0.0-22.22 | resolute-updates | amd64, amd64v3, > arm64, armhf, ppc64el, s390x > (this version is 7 builds newer) > Could you please updated to the latest kernel and let us know if the > situation improved?
Hi, same issue is present on 7.0.0-22 $ uname -a Linux localhost 7.0.0-22-generic #22-Ubuntu SMP PREEMPT Mon May 25 14:44:32 UTC 2026 s390x GNU/Linux $ make -j$(nproc) # 40 cpus $ perf top 40.03% [kernel] [k] arch_spin_trylock_retry 5.24% [kernel] [k] _raw_spin_lock_irqsave 1.18% [kernel] [k] arch_spin_relax 0.90% cc1 [.] ggc_internal_alloc_no_dtor(unsigned long, void (*)(void*), unsigned long, unsigned long) 0.87% [kernel] [k] post_alloc_hook.localalias 0.86% cc1 [.] ht_lookup_with_hash(ht*, unsigned char const*, unsigned long, unsigned int, ht_lookup_option) 0.84% [kernel] [k] lru_gen_add_folio 0.80% [kernel] [k] lru_gen_del_folio.constprop.0 0.70% [kernel] [k] folios_put_refs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2154748 Title: [Ubuntu 26.04] Severe Performance Degradation on kernel 7.0.0-15 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2154748/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
