<html><head></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1460445327154_11294"> Dear Narges ,</div><div id="yui_3_16_0_ym19_1_1460445327154_11295" dir="ltr">Thanks you so much for your reply. However, after I have changed: ndn::CsTracer::InstallAll("cs-simple2-trace.txt", Seconds(1)); to ndn::CsTracer::InstallAll("cs-simple2-trace.txt", Seconds(0.01)); still I have received zero for cache hit value. I think this function means in the interval defined with second() (for example during 1 second) how many times hash misses or hash hits has happened. if it does not mind, may I know that you solve this problem or not.</div><div id="yui_3_16_0_ym19_1_1460445327154_11409" dir="ltr">thanks in advance</div><div id="yui_3_16_0_ym19_1_1460445327154_11410" dir="ltr">best regards </div></div></body></html>