Hyper-V transfer speeds - Teh Forum

<body> <div id="header"> <span class="left"> <span class="back"><a href="lthread_list.php?webtag=DEFAULT"><span class="image mobile_back" title="Back"></span></a></span> <span class="image mobile_logo" title="Beehive Forum Logo"></span> </span> <ul> <li> <a class="reply_all" href="lpost.php?webtag=DEFAULT&reply_to=41429.0&return_msg=41429.1"> <span class="image mobile_reply_all"></span><span class="text">Reply to All</span> </a> </li> <li> <a class="navigation" href="#"> <span class="image mobile_navigation"></span><span class="text">Show messages</span> </a> </li> <li> <a class="main" href="#"><span class="image mobile_menu" title="Menu"></span> </a> </li> </ul> </div> <div class="menu main"> <ul> <li><a href="lthread_list.php?webtag=DEFAULT">Messages</a></li> <li><a href="lpm.php?webtag=DEFAULT">Inbox</a></li> <li><a href="lsearch.php?webtag=DEFAULT">Search</a></li> <li><a href="llogon.php?webtag=DEFAULT">Login</a></li> </ul> </div> <div class="menu navigation"><a href="lmessages.php?webtag=DEFAULT&msg=41429.1">1</a></div> <div id="page_content"> <h3 class="thread_title"><a href="index.php?webtag=DEFAULT&amp;msg=41429.1">Hyper-V transfer speeds</a> </h3> <div id="messages" data-navigation="41429_1_1_10"> <a name="a41429_1"></a><div class="message" id="message_41429_1"> <div class="message_header"> <div class="message_from"> From: ANT_THOMAS<span class="message_time">10 Mar 2015 22:33</span> <div class="clearer"></div> </div><div class="message_to">To: ALL<span class="message_count">1 of 1</span><div class="clearer"></div> </div> </div> <div class="message_links"> <a href="lmessages.php?webtag=DEFAULT&msg=41429.1">41429.1</a></div> <div class="message_body"> Anyone got any ideas what would cause particularly slow network (samba) transfer speeds with a Hyper-V VM?<br /><br /> System is:<br /><br /> Main server running Hyper-V : Windows Server 2008 R2<br /> VM running on server : Ubuntu server 14.04<br /><br /> Copying a 1.4 GB file from an SMB share on the Win2008R2 server to /dev/null (so not actually writing) I get a speed on the VM of : 13.9 MB/s<br /><br /> On a separate system on the LAN (all gigabit) I get a speed of : 49.8 MB/s<br /><br /> I did a couple of other tests too. So all tests:<br /><br /> SMB-Main Server to VM : 13.9 MB/s<br /> SMB-Main Server to other system : 49.8 MB/s<br /> SCP-VM to other system : ~16 MB/s<br /> SCP-VM to other system with weaker cipher : ~20 MB/s<div class="edit_text">EDITED: 10 Mar 2015 22:56 by ANT_THOMAS</div> </div> <div class="message_footer"> <div class="message_footer_links"><a href="lpost.php?webtag=DEFAULT&reply_to=41429.1&return_msg=41429.1" class="reply"><span class="image post"></span>Reply</a></div> <div class="message_vote_form" data-msg="41429.1"> <span class="rating">0/0</span> <span class="image vote vote_down vote_down_off" title="Vote Down"></span> <span class="image vote vote_up vote_up_off" title="Vote Up"></span> </div> </div> </div></div> </div> </body>