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    <div class="moz-cite-prefix">Interesting. I mean, 1 second????<br>
      <br>
      Am 05.01.17 um 13:10 schrieb Sabine Manaa:<br>
    </div>
    <blockquote
cite="mid:CA+UbgZY=5quUAKiAeyRVukWFe_dxNnebZPHb55o=CKEDtWsHZg@mail.gmail.com"
      type="cite">
      <div dir="ltr"><a moz-do-not-send="true"
href="http://stackoverflow.com/questions/25199405/localhost-vs-127-0-0-1-performance"
          target="_top" rel="nofollow" link="external">http://stackoverflow.com/questions/25199405/localhost-vs-127-0-0-1-performance</a><br>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">2017-01-05 13:24 GMT+01:00 Sabine Manaa
          <span dir="ltr"><<a moz-do-not-send="true"
              href="/user/SendEmail.jtp?type=node&node=4928847&i=0"
              target="_top" rel="nofollow" link="external">[hidden
              email]</a>></span>:<br>
          <blockquote style="border-left:2px solid #CCCCCC;padding:0
            1em" class="gmail_quote">
            <div dir="ltr">Mariano, no, there is no difference in the
              response time between localhost and 127.0.0.1
              <div>I entered now the ip of the server there.</div>
              <div><br>
              </div>
              <div>Don't you think that this should be written in the
                book?</div>
              <div><a moz-do-not-send="true"
href="http://book.seaside.st/book/advanced/deployment/deployment-apache/configure-apache"
                  target="_blank" rel="nofollow" link="external">http://book.seaside.st/book/<wbr>advanced/deployment/<wbr>deployment-apache/configure-<wbr>apache</a><br>
              </div>
              <div><br>
              </div>
              <div><br>
              </div>
            </div>
            <div class="gmail_extra"><br>
              <div class="gmail_quote"><span class="">2017-01-05 12:58
                  GMT+01:00 Mariano Martinez Peck [via Smalltalk] <span
                    dir="ltr"><<a moz-do-not-send="true"
                      href="/user/SendEmail.jtp?type=node&node=4928847&i=1"
                      target="_top" rel="nofollow" link="external">[hidden
                      email]</a>></span>:<br>
                </span>
                <blockquote style="border-left:2px solid
                  #CCCCCC;padding:0 1em" class="gmail_quote"><span
                    class=""><span>
                      <div dir="ltr">Wow, that's what I call to nail it!
                        hahahaha. 
                        <div><br>
                        </div>
                        <div>Norbert, do you have some explanation we
                          could all learn from it? It's something
                          concrete about Apache or is it something as
                          general as resolving localhost could take
                          longer than 127.0.0.1? </div>
                        <div><br>
                        </div>
                        <div>Sabine, do you see a difference in the
                          response time  when ping to localhost and
                          127.0.0.1 ?</div>
                        <div><br>
                        </div>
                        <div>Thanks in advance,</div>
                      </div>
                    </span></span>
                  <div class="gmail_extra"><br>
                    <div class="gmail_quote">
                      <div>
                        <div class="h5"><span>On Thu, Jan 5, 2017 at
                            8:47 AM, Sabine Manaa <span dir="ltr"><<a
                                moz-do-not-send="true"
                                href="http:///user/SendEmail.jtp?type=node&node=4928845&i=0"
                                rel="nofollow" link="external"
                                target="_blank">[hidden email]</a>></span>
                            wrote:<br>
                          </span></div>
                      </div>
                      <blockquote style="border-left:2px solid
                        #CCCCCC;padding:0 1em" class="gmail_quote">
                        <div>
                          <div class="h5"><span>
                              <div dir="ltr">The problem is solved: I
                                had to replace localhost by 127.0.0.1
                                <div>Thanks a lot Norbert Hartl for your
                                  advice!</div>
                              </div>
                            </span>
                            <div class="gmail_extra"><br>
                              <div class="gmail_quote">
                                <div>
                                  <div class="m_-1173398150755480083h5">
                                    <div>
                                      <div
                                        class="m_-1173398150755480083m_-5705219244411924048h5">2017-01-05
                                        12:25 GMT+01:00 Sabine Manaa
                                        [via Smalltalk] <span dir="ltr"><<a
                                            moz-do-not-send="true"
                                            href="http:///user/SendEmail.jtp?type=node&node=4928844&i=0"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">[hidden
                                            email]</a>></span>:<br>
                                      </div>
                                    </div>
                                  </div>
                                </div>
                                <blockquote style="border-left:2px solid
                                  #CCCCCC;padding:0 1em"
                                  class="gmail_quote">
                                  <div>
                                    <div
                                      class="m_-1173398150755480083h5">
                                      <div>
                                        <div
                                          class="m_-1173398150755480083m_-5705219244411924048h5">
                                          Hi, <br>
                                          <br>
                                          I need the help of the
                                          community. <br>
                                          <br>
                                          I am not succeding in making
                                          our app faster. <br>
                                          The problem is the Time to
                                          first Byte (TTFB). It is
                                          always more than one second
                                          which is much to much. <br>
                                          We reduced the problem to a
                                          problem between apache and
                                          pharo/seaside. <br>
                                          <br>
                                          For this, I have a test
                                          application which only renders
                                          "hello World". So I am sure it
                                          is not my code, my database,
                                          my css, my js, my ssl.... :-)
                                          <br>
                                          <br>
                                          I optimized and learned a lot
                                          for my app, but it did not
                                          solve the TTFB problem, which
                                          costs 1 additional sec for
                                          each click of the user which
                                          is inaceptable. <br>
                                          <br>
                                          Please follow this tests to
                                          see the problem: <br>
                                          <br>
                                          ===>>> Test 1:
                                          test.html without
                                          Pharo/seaside <br>
                                          <a moz-do-not-send="true"
href="https://tools.keycdn.com/performance?url=http://app.spesenfuchs.de/test.html"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">https://tools.keycdn.com/perfo<wbr>rmance?url=http://app.spesenfu<wbr>chs.de/test.html</a><br>
                                          TTFB in Frankfurt below 10 ms
                                          -> this proves that the
                                          server and configuration is
                                          fast. <br>
                                          <br>
                                          ===>>> Test 2: hello
                                          world, simple seaside page <br>
                                          <a moz-do-not-send="true"
                                            href="https://tools.keycdn.com/performance?url=app.spesenfuchs.de/hello"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">https://tools.keycdn.com/perfo<wbr>rmance?url=app.spesenfuchs.de/<wbr>hello</a><br>
                                          TTFB in Frankfurt more than 1
                                          second! -> this proves that
                                          it is not my application :-)
                                          it is only a hello world
                                          seaside page... <br>
                                          <br>
                                          ===>>> Test 3: my
                                          login page <br>
                                          <a moz-do-not-send="true"
                                            href="https://tools.keycdn.com/performance?url=app.spesenfuchs.de/rka"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">https://tools.keycdn.com/perfo<wbr>rmance?url=app.spesenfuchs.de/<wbr>rka</a><br>
                                          TTFB in Frankfurt more than 1
                                          second! <br>
                                          <br>
                                          (alternative: enter the urls
                                          into <a
                                            moz-do-not-send="true"
                                            href="https://gtmetrix.com/"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">https://gtmetrix.com/</a>)
                                          <br>
                                          <br>
                                          In Apache, we enabled tracing
                                          of the rewrite and this tells
                                          me (i assume), that apache
                                          makes the rewrite very fast,
                                          within the same millisecond
                                          :-) <br>
                                          [Thu Jan 05 12:14:35.243400
                                          2017] [rewrite:trace2] [pid
                                          1288:tid 1692]
                                          mod_rewrite.c(477): [client <a
                                            moz-do-not-send="true"
                                            href="http://91.89.219.232:52272"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">91.89.219.232:52272</a>]
                                          91.89.219.232 - - [<a
                                            moz-do-not-send="true"
                                            href="http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">app.spesenfuchs.de/sid#66c848<wbr>][rid#20bc4c8/initial</a>]
                                          init rewrite engine with
                                          requested uri /hello <br>
                                          [Thu Jan 05 12:14:35.243400
                                          2017] [rewrite:trace3] [pid
                                          1288:tid 1692]
                                          mod_rewrite.c(477): [client <a
                                            moz-do-not-send="true"
                                            href="http://91.89.219.232:52272"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">91.89.219.232:52272</a>]
                                          91.89.219.232 - - [<a
                                            moz-do-not-send="true"
                                            href="http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">app.spesenfuchs.de/sid#66c848<wbr>][rid#20bc4c8/initial</a>]
                                          applying pattern '^/rka(.*)$'
                                          to uri '/hello' <br>
                                          [Thu Jan 05 12:14:35.243400
                                          2017] [rewrite:trace3] [pid
                                          1288:tid 1692]
                                          mod_rewrite.c(477): [client <a
                                            moz-do-not-send="true"
                                            href="http://91.89.219.232:52272"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">91.89.219.232:52272</a>]
                                          91.89.219.232 - - [<a
                                            moz-do-not-send="true"
                                            href="http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">app.spesenfuchs.de/sid#66c848<wbr>][rid#20bc4c8/initial</a>]
                                          applying pattern
                                          '^/hello(.*)$' to uri '/hello'
                                          <br>
                                          [Thu Jan 05 12:14:35.243400
                                          2017] [rewrite:trace2] [pid
                                          1288:tid 1692]
                                          mod_rewrite.c(477): [client <a
                                            moz-do-not-send="true"
                                            href="http://91.89.219.232:52272"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">91.89.219.232:52272</a>]
                                          91.89.219.232 - - [<a
                                            moz-do-not-send="true"
                                            href="http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">app.spesenfuchs.de/sid#66c848<wbr>][rid#20bc4c8/initial</a>]
                                          rewrite '/hello' -> '<a
                                            moz-do-not-send="true"
                                            href="http://localhost:8085/HelloWorld/%27"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">http://localhost:8085/HelloWo<wbr>rld/'</a><br>
                                          [Thu Jan 05 12:14:35.243400
                                          2017] [rewrite:trace2] [pid
                                          1288:tid 1692]
                                          mod_rewrite.c(477): [client <a
                                            moz-do-not-send="true"
                                            href="http://91.89.219.232:52272"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">91.89.219.232:52272</a>]
                                          91.89.219.232 - - [<a
                                            moz-do-not-send="true"
                                            href="http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">app.spesenfuchs.de/sid#66c848<wbr>][rid#20bc4c8/initial</a>]
                                          forcing proxy-throughput with
                                          <a moz-do-not-send="true"
                                            href="http://localhost:8085/HelloWorld/"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">http://localhost:8085/HelloWor<wbr>ld/</a><br>
                                          [Thu Jan 05 12:14:35.243400
                                          2017] [rewrite:trace1] [pid
                                          1288:tid 1692]
                                          mod_rewrite.c(477): [client <a
                                            moz-do-not-send="true"
                                            href="http://91.89.219.232:52272"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">91.89.219.232:52272</a>]
                                          91.89.219.232 - - [<a
                                            moz-do-not-send="true"
                                            href="http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">app.spesenfuchs.de/sid#66c848<wbr>][rid#20bc4c8/initial</a>]
                                          go-ahead with proxy request
                                          proxy:<a
                                            moz-do-not-send="true"
                                            href="http://localhost:8085/HelloWorld/"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">http://localhost:8085/He<wbr>lloWorld/</a> [OK]
                                          <br>
                                          <br>
                                          So, I assume that there is
                                          problem between Apache and
                                          Seaside.... <br>
                                          <br>
                                          My questiond are:   <br>
                                          what can I do to find the
                                          bottleneck? <br>
                                          what is the reason that is so
                                          slow? <br>
                                          your help is very appreciated
                                          because I have run out of
                                          ideas what it could be and I
                                          was investigating it several
                                          days now. <br>
                                            <br>
                                          Concerning the system: <br>
                                          The server is at Amazon ec2
                                          windows Server 2009 R2 SP1 <br>
                                          The Apache version is 2.4.23 <br>
                                          The configuration of the
                                          apache is like this (as
                                          described in the seaside book
                                          <a moz-do-not-send="true"
href="http://book.seaside.st/book/advanced/deployment/deployment-apache/configure-apache"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">http://book.seaside.st/book/ad<wbr>vanced/deployment/deployment-a<wbr>pache/configure-apache</a>)
                                          <br>
                                          <br>
                                          <VirtualHost *:80><br>
                                                ProxyPreserveHost On <br>
                                                ServerName <a
                                            moz-do-not-send="true"
                                            href="http://app.spesenfuchs.de"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">app.spesenfuchs.de</a>
                                          <br>
                                                RewriteEngine On <br>
                                          <Directory
                                          "C:\xampp\htdocs"><br>
                                                  Require all granted <br>
                                          </Directory><br>
                                               DocumentRoot
                                          "C:\xampp\htdocs" <br>
                                               RewriteCond
                                          %{DOCUMENT_ROOT}/%{REQUEST_FIL<wbr>ENAME}
                                          !-f <br>
                                          <br>
                                              RewriteRule ^/rka(.*)$ <a
                                            moz-do-not-send="true"
                                            href="http://localhost:8085/RKA/$1"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">http://localhost:8085/RKA/$1</a> [<wbr>proxy,last]
                                          <br>
                                             RewriteRule ^/hello(.*)$ <a
                                            moz-do-not-send="true"
                                            href="http://localhost:8085/HelloWorld/$1"
                                            rel="nofollow"
                                            link="external"
                                            target="_blank">http://localhost:8085/HelloWor<wbr>ld/$1</a> [proxy,last]
                                          <br>
                                          </VirtualHost> <br>
                                          <br>
                                        </div>
                                      </div>
                                      <hr color="#cccccc" size="1"
                                        noshade="noshade">
                                      <div style="color:#444;font:12px
                                        tahoma,geneva,helvetica,arial,sans-serif"><span>
                                          <div style="font-weight:bold">If
                                            you reply to this email,
                                            your message will be added
                                            to the discussion below:</div>
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href="http://forum.world.st/TTFB-Apache-Seaside-Performance-Problem-tp4928842.html"
                                          rel="nofollow" link="external"
                                          target="_blank">http://forum.world.st/TTFB-Apa<wbr>che-Seaside-Performance-Proble<wbr>m-tp4928842.html</a>
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                                    </div>
                                  </div>
                                  <div style="color:#666;font:11px
tahoma,geneva,helvetica,arial,sans-serif;margin-top:.4em;line-height:1.5em">
                                    To start a new topic under Seaside
                                    General, email <a
                                      moz-do-not-send="true"
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                                </blockquote>
                              </div>
                              <br>
                            </div>
                            <span
                              class="m_-1173398150755480083m_-5705219244411924048im
m_-1173398150755480083m_-5705219244411924048HOEnZb"> <br>
                              <span>
                                <hr align="left" width="300">
                                View this message in context: <a
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href="http://forum.world.st/TTFB-Apache-Seaside-Performance-Problem-tp4928842p4928844.html"
                                  rel="nofollow" link="external"
                                  target="_blank">Re: TTFB, Apache,
                                  Seaside Performance Problem</a><br>
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    <pre class="moz-signature" cols="72">-- 
-----------------------------------------------------------------------
Objektfabrik Joachim Tuchel          <a class="moz-txt-link-freetext" href="mailto:jtuchel@objektfabrik.de">mailto:jtuchel@objektfabrik.de</a>
Fliederweg 1                         <a class="moz-txt-link-freetext" href="http://www.objektfabrik.de">http://www.objektfabrik.de</a>
D-71640 Ludwigsburg                  <a class="moz-txt-link-freetext" href="http://joachimtuchel.wordpress.com">http://joachimtuchel.wordpress.com</a>
Telefon: +49 7141 56 10 86 0         Fax: +49 7141 56 10 86 1

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