https://community.intel.com/t5/Software-Tuning-Performance/How-to-enusre-wbinvd-complete/m-p/1166077#M7153 <P>Hi, I have a question about "wbinvd" instruction.&nbsp;</P><P>According to Intel manual, it said "After executing this instruction, the processor does not wait for the external caches to complete their write-back and flushing operations before proceeding with instruction execution. It is the responsibility of hardware to respond to the cache write-back and flush signals. The amount of time or cycles for WBINVD to complete will vary due to size and other factors of different cache hierarchies."</P><P>I am wondering is&nbsp;there any method to force the program waits for unit the external cache flushing complete caused by WBINVD instruction? Then we can measure the overhead of WBINVD instruction.&nbsp;</P><P>Any suggestion will be helpful. Thanks~</P> Mon, 17 Jun 2019 05:55:30 GMT kai_w_ 2019-06-17T05:55:30Z https://community.intel.com/t5/Software-Tuning-Performance/How-to-enusre-wbinvd-complete/m-p/1166077#M7153 <P>Hi, I have a question about "wbinvd" instruction.&nbsp;</P><P>According to Intel manual, it said "After executing this instruction, the processor does not wait for the external caches to complete their write-back and flushing operations before proceeding with instruction execution. It is the responsibility of hardware to respond to the cache write-back and flush signals. The amount of time or cycles for WBINVD to complete will vary due to size and other factors of different cache hierarchies."</P><P>I am wondering is&nbsp;there any method to force the program waits for unit the external cache flushing complete caused by WBINVD instruction? Then we can measure the overhead of WBINVD instruction.&nbsp;</P><P>Any suggestion will be helpful. Thanks~</P> Mon, 17 Jun 2019 05:55:30 GMT https://community.intel.com/t5/Software-Tuning-Performance/How-to-enusre-wbinvd-complete/m-p/1166077#M7153 kai_w_ 2019-06-17T05:55:30Z