TotalPeakTPS exceeding DesiredLoad in testing with AWS
"Yim, Sabina" <Sabina.Yim-2-taCtA1Gr/[email protected]> Tue, 28 Nov 2017 20:23:43 +0000
| Newsgroups | gmane.comp.java.grinder.user |
|---|---|
| Message-ID | <EB3F37B8CB395D4BA977F015FA454E250314EC9E@EMP-EXMR104.corp.leidos.com> |
--===============7012154290653248176==
Content-Language: en-US
Content-Type: multipart/alternative;
boundary="_000_EB3F37B8CB395D4BA977F015FA454E250314EC9EEMPEXMR104corpl_"
--_000_EB3F37B8CB395D4BA977F015FA454E250314EC9EEMPEXMR104corpl_
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
Hello,
I am using the instructions from http://www.aws-il.com/load-testing/grinder=
/ to get a distributed load test of a server up and running using a CloudFo=
rmation stack of console/agents. Within these instructions, I can set Desir=
edLoad parameter (tests/sec) in the CloudFormation template with the load I=
'd like to reach.
I've been trying to run my test with just one agent and periodically set th=
e DesiredLoad with increasing values at certain intervals to get a sense fo=
r how the response time changes depending on the load, and at what load the=
response time starts to increase.
Ex. Start with DesiredLoad =3D 100, from there DesiredLoad +=3D 100 every 1=
0 minutes. (I have a bash script to take care of updating DesiredLoad and t=
he stack)
However, every time I create the stack, a number of things happen that conf=
use me:
- The CloudWatch alarm used to monitor the stack begins in the INS=
UFFICIENT_DATA state
- Eventually it changes to the OK state, and the TotalPeakTPS metr=
ic starts at ~300-400 (exceeding the DesiredLoad I'd set by quite a bit)
I'm not sure why the TotalPeakTPS begins much higher than the DesiredLoad I=
'd set. What exactly does Grinder in the console/agents do to work towards =
the DesiredLoad? Is there a way I can ensure the console/agents maintain a =
load close to the DesiredLoad, and have it update accordingly when I update=
the stack?
Any ideas or advice? Thanks!
--_000_EB3F37B8CB395D4BA977F015FA454E250314EC9EEMPEXMR104corpl_
Content-Type: text/html; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
<html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr=
osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:=
//www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
<meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* 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;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.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;}
/* List Definitions */
@list l0
{mso-list-id:1470510868;
mso-list-type:hybrid;
mso-list-template-ids:1203290850 -1088143810 67698691 67698693 67698689 67=
698691 67698693 67698689 67698691 67698693;}
@list l0:level1
{mso-level-start-at:0;
mso-level-number-format:bullet;
mso-level-text:-;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Calibri",sans-serif;
mso-fareast-font-family:Calibri;
mso-bidi-font-family:"Times New Roman";}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l1
{mso-list-id:1607075973;
mso-list-type:hybrid;
mso-list-template-ids:519204232 1068007052 67698691 67698693 67698689 6769=
8691 67698693 67698689 67698691 67698693;}
@list l1:level1
{mso-level-start-at:0;
mso-level-number-format:bullet;
mso-level-text:-;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Calibri",sans-serif;
mso-fareast-font-family:Calibri;
mso-bidi-font-family:"Times New Roman";}
@list l1:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l1:level3
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l1:level4
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;}
@list l1:level5
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l1:level6
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
@list l1:level7
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Symbol;}
@list l1:level8
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:"Courier New";}
@list l1:level9
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-.25in;
font-family:Wingdings;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Hello,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">I am using the instructions from <a href=3D"http://w=
ww.aws-il.com/load-testing/grinder/">
http://www.aws-il.com/load-testing/grinder/</a> to get a distributed load t=
est of a server up and running using a CloudFormation stack of console/agen=
ts. Within these instructions, I can set DesiredLoad parameter (tests/sec) =
in the CloudFormation template with
the load I’d like to reach. <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">I’ve been trying to run my test with just one =
agent and periodically set the DesiredLoad with increasing values at certai=
n intervals to get a sense for how the response time changes depending on t=
he load, and at what load the response time
starts to increase.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Ex. Start with DesiredLoad =3D 100, from there Desir=
edLoad +=3D 100 every 10 minutes. (I have a bash script to take care of=
updating DesiredLoad and the stack)<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">However, every time I create the stack, a number of =
things happen that confuse me:<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l1 level=
1 lfo2"><![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=
=3D"font:7.0pt "Times New Roman""> &=
nbsp;
</span></span><![endif]>The CloudWatch alarm used to monitor the stack begi=
ns in the INSUFFICIENT_DATA state<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-.25in;mso-list:l1 level=
1 lfo2"><![if !supportLists]><span style=3D"mso-list:Ignore">-<span style=
=3D"font:7.0pt "Times New Roman""> &=
nbsp;
</span></span><![endif]>Eventually it changes to the OK state, and the Tota=
lPeakTPS metric starts at ~300-400 (exceeding the DesiredLoad I’d set=
by quite a bit)<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">I’m not sure why the TotalPeakTPS begins much =
higher than the DesiredLoad I’d set. What exactly does Grinder in the=
console/agents do to work towards the DesiredLoad? Is there a way I can en=
sure the console/agents maintain a load close
to the DesiredLoad, and have it update accordingly when I update the stack=
?<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Any ideas or advice? Thanks!<o:p></o:p></p>
</div>
</body>
</html>
--_000_EB3F37B8CB395D4BA977F015FA454E250314EC9EEMPEXMR104corpl_--
--===============7012154290653248176==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
--===============7012154290653248176==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
grinder-use mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/grinder-use
--===============7012154290653248176==--