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    <div class="moz-cite-prefix">Am 24.07.2013 23:40, schrieb W3ll
      Schmidt:<br>
    </div>
    <blockquote
cite="mid:CAKOLWjQi5wT+r-wkBqF2bEsYFEPdKAXyKaehm3pSj7TKwUvTMw@mail.gmail.com"
      type="cite">
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          <div class="gmail_quote">Am 24. Juli 2013 22:32 schrieb simon
            notz <span dir="ltr"><<a moz-do-not-send="true"
                href="mailto:vorderberg@googlemail.com" target="_blank">vorderberg@googlemail.com</a>></span>:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div dir="ltr">
                <div>Mein Ziel wäre meine 24kWp Anlage richtig zu
                  monitoren, also ca. 24 000 Impulse/h bei
                  Spitzenleistung. </div>
                <div>Gibt es überhaupt jemanden der das mit der
                  Erweiterung von Udo über S0vz erfolgreich macht? Also
                  über 10kW? </div>
              </div>
            </blockquote>
          </div>
          <br>
        </div>
        <div class="gmail_extra">Ich bräuchte ne Idee wie ich 10 Impulse
          pro Sekunde simulieren kann ...<br>
          <br>
        </div>
        <div class="gmail_extra">Mit einem zweiten Raspi? Ich hab auch
          noch ein NetIO rumliegen ...<br>
        </div>
      </div>
    </blockquote>
    <font size="+1"><font size="+1"><font size="+1"><font size="+1"><font
              size="+1"><font size="+1"><font size="+1"> <br>
                  <font size="+1">Ich hab das <font size="+1">ganze
                      Thema ger<font size="+1">ade hin<font size="+1">ter

                          mir, weil ich wissen w<font size="+1">ollte,
                            was ethersex au<font size="+1">f <font
                                size="+1"><font size="+1">N</font>etIO</font></font>
                            so <font size="+1">verkraftet.</font></font>
                          <font size="+1">Vorge<font size="+1">henswei<font
                                size="+1">se:<br>
                                <br>
                                <font size="+1">Server (mit FreeBSD, 2 x
                                  1<font size="+1">.4 Ghz, Ram zum <font
                                      size="+1">Abwink<font size="+1">en
                                        und gr<font size="+1">osse </font></font></font>Sata-Platten

                                    mit RAID<font size="+1">-1</font>)
                                    mit <font size="+1">perl-"Webserver"

                                      (erzeugt nur passende
                                      Antwort-Header) gegen <font
                                        size="+1">Linux-Box mit <font
                                          size="+1">perl<font size="+1">-Programm<font
                                              size="+1">, daß die
                                              Aufrufe macht: <font
                                                size="+1"><font
                                                  size="+1">mehrere
                                                  tausend<font size="+1">
                                                    pro Sekunde<font
                                                      size="+1">.</font><br>
                                                    <br>
                                                    <font size="+1">Server

                                                      <font size="+1">(s.<font
                                                          size="+1">o)
                                                          mit realem
                                                          VZ/realer UUID
                                                          drauf gegen L<font
                                                          size="+1">inux-Box<font
                                                          size="+1"> von
                                                          oben: siehe
                                                          Logfile<font
                                                          size="+1"><font
                                                          size="+1"><font
                                                          size="+1">. <font
                                                          size="+1">Das
                                                          waren echte <font
                                                          size="+1">Aufruf<font
                                                          size="+1">e</font></font>
                                                          mit (im VZ)
                                                          angelegter
                                                          UUID und Zeits<font
                                                          size="+1">tempel

                                                          <font
                                                          size="+1">vom
                                                          Server.</font></font></font><br>
                                                          <br>
                                                          <font
                                                          size="+1">Net-IO,

                                                          der auf 8
                                                          Kanälen mit
                                                          realistischen
                                                          S0-Impulse <font
                                                          size="+1">b</font>eaufschlagt

                                                          wird (also <font
                                                          size="+1">30-90ms

                                                          langen
                                                          active-low,
                                                          erzeugt von
                                                          Arduino): rund
                                                          1 Impu<font
                                                          size="+1">ls/s<font
                                                          size="+1">
                                                          (mit Ethersex,
                                                          IRQ-gesteuert).

                                                          Dank
                                                          Ringpuffer geh<font
                                                          size="+1">en
                                                          kurze
                                                          Impuls-Bursts
                                                          nicht verlore<font
                                                          size="+1">n<font
                                                          size="+1">,
                                                          werden<font
                                                          size="+1">
                                                          aber zeitlich
                                                          verfälscht
                                                          weitergereicht<font
                                                          size="+1">,
                                                          halt mit <font
                                                          size="+1">einem

                                                          Ein<font
                                                          size="+1">trag
                                                          pro Sekunde,
                                                          bis der Puffer
                                                          leer ist. Bei
                                                          Da<font
                                                          size="+1">uerlast

                                                          <font
                                                          size="+1">gehen

                                                          Zählimpulse
                                                          verloren...</font></font></font></font></font><br>
                                                          <br>
                                                          <font
                                                          size="+1">Der
                                                          Raspi ist von
                                                          der Hardware
                                                          her ein ganz
                                                          anderes <font
                                                          size="+1">Kaliber

                                                          als ein Atmega
                                                          mit 16Mhz. S0<font
                                                          size="+1">vz
                                                          ist <font
                                                          size="+1">eine
                                                          geradli<font
                                                          size="+1">ni<font
                                                          size="+1">ge
                                                          Sache in C</font>
                                                          und daher ist
                                                          mit ziemlicher
                                                          Sicherheit der
                                                          Raspi <font
                                                          size="+1">nicht

                                                          der
                                                          begrenzende
                                                          Faktor. Kann
                                                          man natürlich
                                                          mal testen,
                                                          ein Programm
                                                          für ein A<font
                                                          size="+1">rduino,

                                                          das S0-Impulse
                                                          in beliebiger
                                                          Menge und
                                                          Geschwindigkeit
                                                          erzeugt<font
                                                          size="+1">,
                                                          ist <font
                                                          size="+1">in
                                                          ein paar
                                                          Minuten
                                                          geschriebe<font
                                                          size="+1">n.<br>
                                                          <br>
                                                          <font
                                                          size="+1">Der
                                                          Bottleneck ist
                                                          eindeutig der
                                                          Server<font
                                                          size="+1"> mit
                                                          der Middleware</font>.
                                                          Hardware ist <font
                                                          size="+1">ein
                                                          HP Proli<font
                                                          size="+1">ant
                                                          N40L mit <font
                                                          size="+1">Free<font
                                                          size="+1">BSD
                                                          9.1, ZFS<font
                                                          size="+1">
                                                          (gemirrort)
                                                          und<font
                                                          size="+1"> 8GB
                                                          Ram<font
                                                          size="+1">.
                                                          Auf der Kiste
                                                          läuft,<font
                                                          size="+1"> was
                                                          man halt so
                                                          braucht, vom
                                                          Mailserver
                                                          über etliche
                                                          SMB- und NFS</font></font></font></font></font></font></font></font>-Shares,
                                                          <font
                                                          size="+1">e<font
                                                          size="+1">ine
                                                          VirtualBox-VM
                                                          mit <font
                                                          size="+1">der
                                                          Telefonanlage
                                                          usw. Die <font
                                                          size="+1">Kiste
                                                          idle<font
                                                          size="+1">d
                                                          mehr oder
                                                          weniger vor
                                                          sich hin,
                                                          typische Last
                                                          ist 0.1-0.2
                                                          und
                                                          vernachlässigbaren
                                                          Plattenz<font
                                                          size="+1">ugriffen.</font></font></font></font></font></font><br>
                                                          <br>
                                                          </font>Ich
                                                          hänge mal <font
                                                          size="+1">zwei
                                                          typische Logs
                                                          sowie das
                                                          perl-Testprogramm
                                                          a<font
                                                          size="+1">n.
                                                          Das erste ist
                                                          vom oben
                                                          erwähnten N40L
                                                          (als typischer
                                                          Heimserver),
                                                          das zweite ist
                                                          von einer
                                                          virtuellen Mas<font
                                                          size="+1">chine,
                                                          die auf einem
                                                          etwas größeren
                                                          Eisen läuft (8<font
                                                          size="+1"> * </font>Xenon@3GHz,
                                                          32GB RAM). <font
                                                          size="+1">Letztere
                                                          schafft<font
                                                          size="+1">
                                                          ohne Mucken
                                                          ca. 10-12 <font
                                                          size="+1">Aufruf<font
                                                          size="+1">e/s<font
                                                          size="+1">,
                                                          bei Zugriffen</font>
                                                          über das
                                                          Internet<font
                                                          size="+1">. <font
                                                          size="+1">Die
                                                          Ping-Laufzeiten
                                                          zwischen den
                                                          beiden
                                                          Maschinen (<font
                                                          size="+1">VZ
                                                          und
                                                          Testaufruf-Generator<font
                                                          size="+1">)<font
                                                          size="+1"> </font></font></font>sind
                                                          im
                                                          12-13ms-Bereich.
                                                          Lok<font
                                                          size="+1">al<font
                                                          size="+1">
                                                          noch nicht
                                                          getestet.</font></font></font></font><br>
                                                          <br>
                                                          <font
                                                          size="+1">Martin</font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font><br>
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