Full reproducer referenced in the kernel revert:
#include <sys/epoll.h>
#include <sys/time.h>
#include <sys/wait.h>
int main() {
int e = epoll_create1(0);
struct epoll_event event = {.events = EPOLLIN};
epoll_ctl(e, EPOLL_CTL_ADD, 0, &event);
const struct timespec timeout = {.tv_nsec = 1};
epoll_pwait2(e, &event, 1, &timeout, 0);
}
I tested this locally and it really spins on 6.14.0.17-17 while behaving
normally on 6.14.0.15-15.
I'm marking the snapd and go tasks as invalid
** Changed in: golang
Status: New => Invalid
** Changed in: snapd
Importance: High => Undecided
** Changed in: snapd
Status: Confirmed => Invalid
** Changed in: snapd
Assignee: Zygmunt Krynicki (zyga) => (unassigned)
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https://bugs.launchpad.net/bugs/2110289
Title:
snapd has high CPU usage for exactly 150 seconds every 5, 7.5 or 10
minutes
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