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Copyright © 2012 Oracle.

Authors:
Dwight Engen <dwight.engen@oracle.com>

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
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Translated into Korean
by Sungbae Yoo <sungbae.yoo at samsung.com>

-->

<!DOCTYPE refentry PUBLIC @docdtd@ [

<!ENTITY seealso SYSTEM "@builddir@/see_also.sgml">
]>

<refentry>

  <docinfo><date>@LXC_GENERATE_DATE@</date></docinfo>

  <refmeta>
    <refentrytitle>lxc-top</refentrytitle>
    <manvolnum>1</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>lxc-top</refname>

    <refpurpose>
      <!--
      monitor container statistics
      -->
      컨테이너의 통계정보 표시
    </refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis>
      <command>lxc-top</command>
      <arg choice="opt">--help</arg>
      <arg choice="opt">--delay <replaceable>delay</replaceable></arg>
      <arg choice="opt">--sort <replaceable>sortby</replaceable></arg>
      <arg choice="opt">--reverse</arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title><!-- Description -->설명</title>
    <para>
      <!--
      <command>lxc-top</command> displays container statistics. The output
      is updated every <replaceable>delay</replaceable> seconds, and is
      ordered according to the <replaceable>sortby</replaceable> value
      given. <command>lxc-top</command> will display as many containers as
      can fit in your terminal. Press 'q' to quit. Press one of the sort
      key letters to sort by that statistic. Pressing a sort key letter a
      second time reverses the sort order.
      -->
      <command>lxc-top</command>는 컨테이너의 통계정보를 표시한다. 출력은 매 <replaceable>delay</replaceable>초마다 갱신된다.
      그리고 <replaceable>sortby</replaceable>로 지정한 항목에 대하여 정렬을 수행한다. <command>lxc-top</command>명령어는 현재 터미널의 크기에 맞게 가능한 많은 컨테이너를 표시한다. 'q'를 누르면 나갈 수 있다. 정렬 항목의 문자를 입력하면 그 항목에 대해 정렬한다. 해당 문자를 두번 입력하면 정렬 순서가 바뀐다.
    </para>
  </refsect1>

  <refsect1>
    <title><!-- Options -->옵션</title>
    <variablelist>

      <varlistentry>
        <term>
          <option>-d, --delay <replaceable>delay</replaceable></option>
        </term>
        <listitem>
          <para>
            <!--
            Amount of time in seconds to delay between screen updates.
            The default is 3 seconds.
            -->
            화면을 갱신하는 시간을 초단위로 지정한다.
            기본값은 3초이다.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>
          <option>-s, --sort <replaceable>sortby</replaceable></option>
        </term>
        <listitem>
          <para>
            <!--
            Sort the containers by name, cpu use, or memory use. The
            <replaceable>sortby</replaceable> argument should be one of
            the letters n,c,b,m,k to sort by name, cpu use, block I/O, memory,
            or kernel memory use respectively. The default is 'n'.
            -->
            이름, CPU 사용량, 메모리 사용량에 대해 정렬한다. <replaceable>sortby</replaceable> 인수에는 최소한 한개의 n, c, b, m, k 문자가 있어야 하며, 각각 CPU 사용량, 블록 I/O, 메모리 사용량, 커널 메모리 사용량을 가리킨다. 기본값은 'n'이다.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>
          <option>-r, --reverse</option>
        </term>
        <listitem>
          <para>
            <!--
            Reverse the default sort order. By default, names sort in
            ascending alphabetical order and values sort in descending
            amounts (ie. largest value first).
            -->
            정렬 순서를 바꾼다. 기본 동작은, 이름은 오름차순 알파벳 정렬이고 값은 내림차순 정렬(큰 값이 먼저)이다.
          </para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <title><!-- Example -->예제</title>
    <variablelist>
      <varlistentry>
        <term>lxc-top --delay 1 --sort m</term>
        <listitem>
        <para>
          <!--
          Display containers, updating every second, sorted by memory use.
          -->
          컨테이너를 1초마다 갱신하면서, 메모리 사용량으로 정렬해서 표시한다.
        </para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <title><!-- Notes -->주의</title>
    <para>
      <!--
      For performance reasons the kernel does not account kernel memory use
      unless a kernel memory limit is set. If a limit is not set, <command>
      lxc-top</command> will display kernel memory use as 0. If no containers
      are being accounted, the KMem column will not be displayed. A limit can
      be set by specifying
      <programlisting>
      lxc.cgroup.memory.kmem.limit_in_bytes = <replaceable>number</replaceable>
      </programlisting>
      in your container configuration file, see
      <citerefentry>
        <refentrytitle>lxc.conf</refentrytitle>
        <manvolnum>5</manvolnum>
      </citerefentry>.
      -->
      성능상의 이유로, 커널 메모리 제한이 걸려있지 않다면 커널 메모리 사용량을 집계하지 않는다.
      메모리 제한이 걸려있지 않다면, <command>lxc-top</command>는 커널 메모리 사용량을 0으로 표시한다. 만약 집계되는 컨테이너가 하나도 없다면, KMem 열은 표시되지 않는다. 메모리 제한은
      <programlisting>
      lxc.cgroup.memory.kmem.limit_in_bytes = <replaceable>number</replaceable>
      </programlisting>
      으로 컨테이너 설정파일에서 지정할 수 있다.
      <citerefentry>
        <refentrytitle>lxc.conf</refentrytitle>
        <manvolnum>5</manvolnum>
      </citerefentry>
      를 참고하면 된다.
    </para>
  </refsect1>

  &seealso;

  <refsect1>
    <title><!-- Author -->저자</title>
    <para>Dwight Engen <email>dwight.engen@oracle.com</email></para>
  </refsect1>

</refentry>

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