" A few weeks ago, Discovery Space readers from Europe witnessed the peak of the Draconids meteor shower that produced around 300 meteors per hour. On Friday evening at around 21:00 GMT, another meteor shower peaks: the Orionids."(Artical)
A comet is made up of rocks and ice, when the comet gets closer to the sun, the ice melts and turns into vapor. That process is called "Sublimation". Smaller pieces of rocks (from the comet) fall down , around the earths atmosphere. The most recent meteor shower came from Halleys Comet, which only comes every 76 years, the meteor showers from Halleys Comet would be called Orionids, because they come annually. Halleys Comet produces 30 meteors per minute.
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