<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <div class="moz-cite-prefix">On 09/12/2019 10:51 AM, Li Wang wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAEemH2eMYmquWXAHXUuPQ1Li2DSfvHpV01O4GMQFZ0Z0s=8+hw@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=utf-8">
      <div dir="ltr">
        <div dir="ltr">
          <div class="gmail_default" style="font-size:small"><br>
          </div>
        </div>
        <br>
        <div class="gmail_quote">
          <div dir="ltr" class="gmail_attr">On Wed, Sep 11, 2019 at 7:19
            PM Cyril Hrubis <<a href="mailto:chrubis@suse.cz"
              target="_blank" moz-do-not-send="true">chrubis@suse.cz</a>>
            wrote:<br>
          </div>
          <blockquote class="gmail_quote" style="margin:0px 0px 0px
            0.8ex;border-left:1px solid
            rgb(204,204,204);padding-left:1ex">Hi!<br>
            > I'm not sure why 64 pages is a proper value? Can you
            explain more?<br>
            <br>
            I've just talked to Michal Hocko and the conclusion is that
            we should<br>
            allocate several megabytes to avoid depending kernel
            implementation<br>
            details, which would mean allocating thousands of pages.<br>
          </blockquote>
          <div><br>
          </div>
          <div>
            <div class="gmail_default">Sounds reasonable. Allocating
              thousands of pages must trigger the MADV_FREE page
              reclaiming.</div>
          </div>
          <div><br>
          </div>
        </div>
        <div class="gmail_default" style="font-size:small">@shuang.qiu,
          Hi Shuang, would you mind to rewrite the patch, or should I do
          that?</div>
      </div>
    </blockquote>
    Thanks for helping to investigate this issue.<br>
    I will update the patch.<br>
    32 pages is really small in current system which may be held on
    reclaiming small piece of memory,thousands of pages is reasonable.<br>
    <br>
    Thanks<br>
    Shuang<br>
    <blockquote type="cite"
cite="mid:CAEemH2eMYmquWXAHXUuPQ1Li2DSfvHpV01O4GMQFZ0Z0s=8+hw@mail.gmail.com">
      <div dir="ltr">
        <div><br>
        </div>
        -- <br>
        <div dir="ltr" class="m_9063406343708931987gmail_signature">
          <div dir="ltr">
            <div>Regards,<br>
            </div>
            <div>Li Wang<br>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
    <p><br>
    </p>
  </body>
</html>