Sorry, maybe here is not the right place to ask a question about rtm provided by haswell, but i don't know where should I post my question. I run a simple test case with the xbegin and xend intructions provided by haswell. The test case is single thread and just touched 20K continued memory bytes in the RTM protected region.(which is much smaller than the l1 cache size.) When using sdk, the test will completes without any abort event. But when I run it on a real haswell machine, it will incur a number of capacity aborts and work out after a number of retries. I want to ask in the real machine, what kind of event will cause the capacity abort except for the cache miss.