Jan Kiszka wrote: > > So if you want the higher performance of PCIe you need > performance-killing wbindv (not to speak of latency)? That sounds a > bit contradictory to me. So this is also true for native PCIe usage? >
Mmm, I won't say so. When you want to get RT performance, you won't use unknown OS such as Windows. If you use your RT linux, the OS (guest) itself should not use wbinvd. For the Bochs BIOS case, like Avi mentioned, we can simply remove it. > What really frightens me about wbinvd is that its latency "nicely" > scales with the cache sizes. And I think my observed latency > is far from > being the worst case. In a different experiment, I once measured > wbinvd latencies of a few milliseconds... :( > I don't know details, but it could be. While RT usage can easily remove this instruction. thx,eddie ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
