On Wed, Jun 30, 2010 at 12:51:59PM +0100, Stefan Hajnoczi wrote: > On Wed, Jun 30, 2010 at 11:20 AM, Prerna Saxena > <pre...@linux.vnet.ibm.com> wrote: > > On 06/26/2010 01:36 PM, Stefan Hajnoczi wrote: > >> > >> Here are the outstanding tasks for QEMU tracing, which Prerna and I have > >> been working on. Tracing aids debugging, profiling, and observing > >> execution via lightweight logging at key points in the code path.
... > >> 5. Out-of-line trace file write-out > >> > >> Owner: Stefan > >> > >> Trace buffers are written out to file synchronously. The vcpu thread > >> should > >> not be blocked so an async write-out mechanism is needed. > >> > >> 6. Trace file command > >> > >> Owner: ? > >> > >> Traces are written out to hardcoded /tmp/trace.log. This must be > >> configurable. > >> Tracing at startup time should still be possible so configuration needs to > >> happen early. Another feature needed would be a facility to trigger a sync of trace buffer to file even if the buffer isn't full. Ananth
