Finding a profiler that works, damnit
Finding a profiler that works, damnit
Posted Mar 30, 2010 18:51 UTC (Tue) by fuhchee (guest, #40059)In reply to: Finding a profiler that works, damnit by sandmann
Parent article: KVM, QEMU, and kernel project management
In systemtap, we do unwinding of kernel/userspace under similar constraints. We work around the "can't page in user data" by preemptively uploading the unwind data into the kernel, so it's ready for use when needed. It costs some memory but it saves time.