Getting started:
Related tutorials:
Getting started:
Related tutorials:
package com.ipvision.nutch.hbase.webtable; | |
import java.io.IOException; | |
import java.lang.invoke.MethodHandles; | |
import java.util.ArrayList; | |
import java.util.List; | |
import java.util.Map; | |
import java.util.Map.Entry; | |
import org.apache.hadoop.conf.Configuration; |
Latency Comparison Numbers | |
-------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |