<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 98.2 beta6 (August 14th, 1998) original version by: Nikos Drakos, CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>Light Load</TITLE> <META NAME="description" CONTENT="Light Load"> <META NAME="keywords" CONTENT="nfs"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <LINK REL="STYLESHEET" HREF="nfs.css"> <LINK REL="next" HREF="node15.html"> <LINK REL="previous" HREF="node13.html"> <LINK REL="up" HREF="node13.html"> <LINK REL="next" HREF="node15.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html177" HREF="node15.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="/usr/lib/latex2html/icons.png/next_motif.png"></A> <A NAME="tex2html175" HREF="node13.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="/usr/lib/latex2html/icons.png/up_motif.png"></A> <A NAME="tex2html169" HREF="node13.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="/usr/lib/latex2html/icons.png/previous_motif.png"></A> <BR> <B> Next:</B> <A NAME="tex2html178" HREF="node15.html">Moderate Load</A> <B> Up:</B> <A NAME="tex2html176" HREF="node13.html">The Kernel-Space NFS Server</A> <B> Previous:</B> <A NAME="tex2html170" HREF="node13.html">The Kernel-Space NFS Server</A> <BR> <BR> <!--End of Navigation Panel--> <H3><A NAME="SECTION00042100000000000000"> Light Load</A> </H3> <P> We ran the SFS benchmarks with initial load set to 100 for 5 times and incremented the load by 100 at each run. We measured the server performances with different numbers of server threads, 1, 2, 4, 8 and 16. The results were listed here: <P> <DIV ALIGN="CENTER"> <TABLE CELLPADDING=3 BORDER="1"> <TR><TD ALIGN="CENTER">Run</TD> <TD ALIGN="CENTER"># of Server</TD> <TD ALIGN="CENTER"># of</TD> <TD ALIGN="CENTER"># of Processes</TD> <TD ALIGN="CENTER">Load</TD> <TD ALIGN="CENTER">Throughput</TD> <TD ALIGN="CENTER">Response Time</TD> </TR> <TR><TD ALIGN="CENTER"> </TD> <TD ALIGN="CENTER">Threads</TD> <TD ALIGN="CENTER">Clients</TD> <TD ALIGN="CENTER">Per Client</TD> <TD ALIGN="CENTER">(Ops/Sec)</TD> <TD ALIGN="CENTER">(Ops/Sec)</TD> <TD ALIGN="CENTER">(Msec/Op)</TD> </TR> <TR><TD ALIGN="CENTER">1</TD> <TD ALIGN="CENTER">1</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">100</TD> <TD ALIGN="CENTER">98</TD> <TD ALIGN="CENTER">1.4</TD> </TR> <TR><TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">1</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">200</TD> <TD ALIGN="CENTER">200</TD> <TD ALIGN="CENTER">2.7</TD> </TR> <TR><TD ALIGN="CENTER">3</TD> <TD ALIGN="CENTER">1</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">300</TD> <TD ALIGN="CENTER">302</TD> <TD ALIGN="CENTER">3.3</TD> </TR> <TR><TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">1</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">400</TD> <TD ALIGN="CENTER">402</TD> <TD ALIGN="CENTER">6.8</TD> </TR> <TR><TD ALIGN="CENTER">1</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">100</TD> <TD ALIGN="CENTER">99</TD> <TD ALIGN="CENTER">1.0</TD> </TR> <TR><TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">200</TD> <TD ALIGN="CENTER">200</TD> <TD ALIGN="CENTER">1.7</TD> </TR> <TR><TD ALIGN="CENTER">3</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">300</TD> <TD ALIGN="CENTER">302</TD> <TD ALIGN="CENTER">2.0</TD> </TR> <TR><TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">400</TD> <TD ALIGN="CENTER">398</TD> <TD ALIGN="CENTER">3.3</TD> </TR> <TR><TD ALIGN="CENTER">1</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">100</TD> <TD ALIGN="CENTER">98</TD> <TD ALIGN="CENTER">1.0</TD> </TR> <TR><TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">200</TD> <TD ALIGN="CENTER">200</TD> <TD ALIGN="CENTER">1.4</TD> </TR> <TR><TD ALIGN="CENTER">3</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">300</TD> <TD ALIGN="CENTER">303</TD> <TD ALIGN="CENTER">1.5</TD> </TR> <TR><TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">400</TD> <TD ALIGN="CENTER">398</TD> <TD ALIGN="CENTER">2.1</TD> </TR> <TR><TD ALIGN="CENTER">1</TD> <TD ALIGN="CENTER">8</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">100</TD> <TD ALIGN="CENTER">98</TD> <TD ALIGN="CENTER">1.0</TD> </TR> <TR><TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">8</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">200</TD> <TD ALIGN="CENTER">200</TD> <TD ALIGN="CENTER">1.4</TD> </TR> <TR><TD ALIGN="CENTER">3</TD> <TD ALIGN="CENTER">8</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">300</TD> <TD ALIGN="CENTER">302</TD> <TD ALIGN="CENTER">1.6</TD> </TR> <TR><TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">8</TD> <TD ALIGN="CENTER">4</TD> <TD ALIGN="CENTER">2</TD> <TD ALIGN="CENTER">400</TD> <TD ALIGN="CENTER">398</TD> <TD ALIGN="CENTER">2.1</TD> </TR> </TABLE> </DIV> <P> The benchmarks show that even for the light load, the kernel-space NFS server outperforms the user-space one by a wide margin. In this test load, 4 kernel NFS server threads provides adequate performance. <P> <HR> <!--Navigation Panel--> <A NAME="tex2html177" HREF="node15.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="/usr/lib/latex2html/icons.png/next_motif.png"></A> <A NAME="tex2html175" HREF="node13.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="/usr/lib/latex2html/icons.png/up_motif.png"></A> <A NAME="tex2html169" HREF="node13.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="/usr/lib/latex2html/icons.png/previous_motif.png"></A> <BR> <B> Next:</B> <A NAME="tex2html178" HREF="node15.html">Moderate Load</A> <B> Up:</B> <A NAME="tex2html176" HREF="node13.html">The Kernel-Space NFS Server</A> <B> Previous:</B> <A NAME="tex2html170" HREF="node13.html">The Kernel-Space NFS Server</A> <!--End of Navigation Panel--> <ADDRESS> <I>H.J. Lu</I> <BR><I>1999-08-15</I> </ADDRESS> </BODY> </HTML>