Java Memory Information prettyPrintMemoryPerSecond(long rate)

Description

pretty Print Memory Per Second

License

Apache License

Declaration

public static String prettyPrintMemoryPerSecond(long rate) 

Method Source Code

//package com.java2s;
/*//w w  w.  j  a v a  2 s.co m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    public static String prettyPrintMemoryPerSecond(long rate) {
        if (rate >= 1 << 30)
            return String.format("%.3fGiB/s", rate / (double) (1 << 30));
        if (rate >= 1 << 20)
            return String.format("%.3fMiB/s", rate / (double) (1 << 20));
        return String.format("%.3fKiB/s", rate / (double) (1 << 10));
    }

    public static String prettyPrintMemoryPerSecond(long bytes, long timeInNano) {
        // We can't sanely calculate a rate over 0 nanoseconds
        if (timeInNano == 0)
            return "NaN  KiB/s";

        long rate = (long) (((double) bytes / timeInNano) * 1000 * 1000 * 1000);

        return prettyPrintMemoryPerSecond(rate);
    }
}

Related

1. getSummaryMemoryReportHeader()
2. getTotalMemoryStringInMb()
3. parseMemory(String s, int def)
4. parseMemorySize(String arg)
5. prettyPrintMemory(long size, boolean includeSpace)
6. printMemory()
7. printMemory()
8. printMemory(String label)
9. printMemory(String str)