<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Nov 19, 2017 at 7:08 PM, Arman Khalatyan <span dir="ltr"><<a href="mailto:arm2arm@gmail.com" target="_blank">arm2arm@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">Hi, in our environment we got pretty good io performance on VM, with following configuration:<div dir="auto"><span style="font-family:sans-serif;font-size:13.696px">lustrebox: /lust mounted on "GATEWAY" over IB
</span><br style="font-family:sans-serif;font-size:13.696px"><span style="font-family:sans-serif;font-size:13.696px">GATEWAY: export /lust as nfs4 on 10G interface
</span><br style="font-family:sans-serif;font-size:13.696px"><span style="font-family:sans-serif;font-size:13.696px">VM(test.vm): import as NFS over 10G interface
</span><br style="font-family:sans-serif;font-size:13.696px"><br style="font-family:sans-serif;font-size:13.696px"><span style="font-family:sans-serif;font-size:13.696px">[</span><a href="mailto:root@gans.vm" style="text-decoration-line:none;color:rgb(66,133,244);font-family:sans-serif;font-size:13.696px" target="_blank">root@test.vm</a><span style="font-family:sans-serif;font-size:13.696px"> ~]# dd if=/dev/zero bs=128K count=100000 </span></div></div></blockquote><div><br></div><div>Without oflag=direct, you are hitting (somewhat) the cache.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="auto"><span style="font-family:sans-serif;font-size:13.696px">
</span><br style="font-family:sans-serif;font-size:13.696px"><span style="font-family:sans-serif;font-size:13.696px">of=/test/tmp/test.tmp
</span><br style="font-family:sans-serif;font-size:13.696px"><span style="font-family:sans-serif;font-size:13.696px">100000+0 records in
</span><br style="font-family:sans-serif;font-size:13.696px"><span style="font-family:sans-serif;font-size:13.696px">100000+0 records out
</span><br style="font-family:sans-serif;font-size:13.696px"><span style="font-family:sans-serif;font-size:13.696px"><a href="tel:(310)%20720-0000" value="+13107200000" target="_blank">13107200000</a> bytes (13 GB) copied, 20.8402 s, 629 MB/s </span><br></div><div dir="auto"><font face="sans-serif"><span style="font-size:13.696px">looks promising for the future deployments.</span></font></div></div></blockquote><div><br></div><div>Very - what's the backend storage?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="auto"><font face="sans-serif"><span style="font-size:13.696px"><br></span></font></div><div dir="auto"><font face="sans-serif"><span style="font-size:13.696px">only one problem remains that on heavy io I get some wornings that the vm network is saturated, are there way to configure the bandwidth limits to 10G for the VM Interface??</span></font></div></div></blockquote><div><br></div><div>Yes, but you really need a dedicated storage interface, no?</div><div>Y.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">thank you beforehand, </div><span class="HOEnZb"><font color="#888888"><div dir="auto">Arman.</div></font></span></div>
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