<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:DengXian;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Microsoft JhengHei";
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"\@Microsoft JhengHei";}
@font-face
{font-family:"\@DengXian";
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:#000066;
font-weight:normal;
font-style:normal;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#000066">In general if someone set –Xmx and –Xms to the same value we generally won’t want the GC to release memory back to the operating system as we actually need this for some reason (e.g. low latency). Can we disable
the periodic GC if someone set –Xmx and –Xms to the same value? Also if someone use “-XX:+AlwaysPreTouch” in general they would be sensitive to the os page allocation latency, and we should consider whether should be candidate for this memory utilization optimization
when the option is used.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#000066"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height:110%"><b><span style="font-size:9.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW">Sunny Chan<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:110%"><b><span style="font-size:9.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW">Senior Lead Engineer, Executive Services<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:110%"><span style="font-size:9.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW">D +852 2600 8907 | M +852 6386 1835 | T +852 2600 8888<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:110%"><span style="font-size:9.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW">5/F, One Island East, 18 Westlands Road, Island East, Hong Kong<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:110%"><span style="font-size:9.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW"><o:p> </o:p></span></p>
<p class="MsoNormal"><a href="https://hk.linkedin.com/company/clsa"><span style="font-size:9.0pt;color:#000066;letter-spacing:.5pt;text-decoration:none"><img border="0" width="26" height="26" style="width:.2708in;height:.2708in" id="Picture_x0020_6" src="cid:image011.png@01D47C29.226959E0" alt=":1. Social Media Icons:CLSA_Social Media Icons_linkedin.png"></span></a><a href="https://twitter.com/clsainsights?lang=en"><span style="font-size:9.0pt;color:#000066;letter-spacing:.5pt;text-decoration:none"><img border="0" width="26" height="26" style="width:.2708in;height:.2708in" id="Picture_x0020_5" src="cid:image012.png@01D47C29.226959E0" alt=":1. Social Media Icons:CLSA_Social Media Icons_twitter.png"></span></a><a href="https://www.youtube.com/channel/UC0qWp_lLnOcRYmBlCNQgZKA"><span style="font-size:9.0pt;color:#000066;letter-spacing:.5pt;text-decoration:none"><img border="0" width="26" height="26" style="width:.2708in;height:.2708in" id="Picture_x0020_4" src="cid:image013.png@01D47C29.226959E0" alt=":1. Social Media Icons:CLSA_Social Media Icons_youtube.png"></span></a><a href="https://www.facebook.com/clsacommunity/"><span style="font-size:9.0pt;color:#000066;letter-spacing:.5pt;text-decoration:none"><img border="0" width="25" height="26" style="width:.2604in;height:.2708in" id="Picture_x0020_3" src="cid:image014.png@01D47C29.226959E0" alt=":1. Social Media Icons:CLSA_Social Media Icons_facebook.png"></span></a><span style="font-size:9.0pt;color:#000066;letter-spacing:.5pt;mso-fareast-language:ZH-TW"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:110%"><span style="font-size:9.0pt;line-height:110%;color:#000066;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height:110%"><span style="font-size:12.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW"><a href="https://www.clsa.com/"><b><span style="font-size:9.0pt;line-height:110%;color:#000066;text-decoration:none">clsa.com</span></b></a></span><b><span style="font-size:9.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:110%"><b><span style="font-size:9.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW">Insights. Liquidity. Capital.
<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:110%"><b><span style="font-size:8.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="line-height:110%"><a href="https://www.clsa.com/member"><span style="font-size:12.0pt;line-height:110%;color:#000066;text-decoration:none"><img border="0" width="131" height="61" style="width:1.3645in;height:.6354in" id="Picture_x0020_8" src="cid:image015.png@01D47C29.226959E0" alt="CLSA_RGB"></span></a><b><span style="font-size:8.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW">
<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:110%"><b><span style="font-size:8.0pt;line-height:110%;color:#000066;mso-fareast-language:ZH-TW"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;color:#000066;mso-fareast-language:ZH-TW">A CITIC Securities Company</span></b><span style="font-size:12.0pt;color:#000066;mso-fareast-language:ZH-TW"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<P><span style="FONT-SIZE: 8pt; FONT-FAMILY: 'Verdana',sans-serif; mso-bidi-font-family: Arial"><span style='FONT-SIZE: 8pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #000066; mso-bidi-font-family: "Times New Roman"; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA'>The content of this communication is intended for the recipient and is subject to CLSA Legal and Regulatory Notices.<br><span style='FONT-SIZE: 8pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #000066; mso-bidi-font-family: "Times New Roman"; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA'>These can be viewed at </span><span style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #000066; mso-bidi-font-family: "Times New Roman"; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA'><A href="https://www.clsa.com/disclaimer.html"><span style="FONT-SIZE: 8pt; COLOR: #000066">https://www.clsa.com/disclaimer.html</span></A></span><span style='FONT-SIZE: 8pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #000066; mso-bidi-font-family: "Times New Roman"; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA'> or sent to you upon request.</span></span><br></span><span><span style='FONT-SIZE: 8pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #00a351; mso-bidi-font-family: "Times New Roman"; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA'>Please consider before printing. CLSA is ISO14001 certified and committed to reducing its impact on the environment.</span></span></P></body>
</html>