<div dir="ltr">Picking up on an earlier point, it looks like both virtio net and virtio block device support have been integrated into mainline illumos for a while, so in theory it should work, though it might take some doing to get a previously installed system to switch to virtio. <div> </div><div>Has anyone actually tried this?</div><div> -nld</div></div><div class="gmail_extra"> <div class="gmail_quote">On Fri, Sep 13, 2013 at 6:38 PM, ashley willis <<a href="mailto:ashleywillis76@gmail.com" target="_blank">ashleywillis76@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I decided to run the mongorestore tool from the bare metal OmniOS to the mongo server running in KVM CentOS, and it is running much quicker -- 50% in 12m52s (and the CPU and memory for mongorestore is only 0.3%). MongoDB is not using much CPU in the VM, either. Total import time this way is 32m12.235s -- still much slower than just bare metal, but not insanely slow like before (the NFS->NFS all within the OmniOS VM was 92m48s). Giving the VM 6 cores and 14GB of ram (instead of 2 and 2) gave somewhat better performance: 27m18.305s. Going back to if=ide, 35m51.575s, so if=virtio does help here some. Is there anything else that can be done to improve disk I/O in a VM, short of giving the VM an entire physical disk? -ashley <div class="HOEnZb"><div class="h5"> On Fri, Sep 13, 2013 at 4:58 PM, ashley willis <<a href="mailto:ashleywillis76@gmail.com">ashleywillis76@gmail.com</a>> wrote: > So, a CentOS 6.4 VM is still horrible with virtio -- it's loaded 2% of > the database in 6 minutes onto a 30g ext4 partition. > > On Fri, Sep 13, 2013 at 4:24 PM, ashley willis <<a href="mailto:ashleywillis76@gmail.com">ashleywillis76@gmail.com</a>> wrote: >> that works for booting centos 6.4, but not for booting omnios -- grub >> comes up but it keeps looping back to the grub menu. granted, i don't >> really need to boot omnios in kvm. i had horrible performance in >> centos as well, so i will try this. >> >> for comparison to my home machine, on a work server i loaded that same >> dataset in 4m10s (xeon 2*6 cores, 60GB ram, 12 600GB 10k SAS drives in >> raid10) reading from disks in a different box. >> >> -ashley >> >> On Fri, Sep 13, 2013 at 3:50 PM, Narayan Desai <<a href="mailto:narayan.desai@gmail.com">narayan.desai@gmail.com</a>> wrote: >>> Depending on the availability of the guest-side drivers, it should be a lot >>> faster to use virtio, both for disk and net. >>> >>> Does anyone know if virtio support ships now in OmniOS? I know there have >>> been some drivers floating around for a while now, but haven't tried them. >>> -nld >>> >>> >>> On Fri, Sep 13, 2013 at 1:45 PM, ashley willis <<a href="mailto:ashleywillis76@gmail.com">ashleywillis76@gmail.com</a>> >>> wrote: >>>> >>>> I have 14GB dump of a MongoDB database that took 10 minutes to restore >>>> on bare metal OmniOS -- I'm fine with this (system is an 8-core AMD >>>> FX-8150, 32GB ram, pair of 500GB WD 'blue" drives mirrored, 90GB ssd >>>> cache -- all desktop-grade). >>>> >>>> Running OmniOS under KVM on this box, the same operation took 246 >>>> minutes with the dump available over an NFS share from the bare metal >>>> system (given 2 cores, 2GB ram, and a 30GB zvol). >>>> >>>> Under the same KVM instance, I decided to see the performance reading >>>> the dump from NFS and having the MongoDB data directory on this same >>>> NFS share, and it's on track to finish in under 60 minutes (half-way >>>> done). That's more than 4 times faster. >>>> >>>> What gives? >>>> >>>> /usr/bin/qemu-system-x86_64 -name OmniOS_Text_r151006p.iso -enable-kvm >>>> -vnc <a href="http://0.0.0.0:15" target="_blank">0.0.0.0:15</a> -smp 2 -m 2048 -no-hpet -localtime -drive >>>> file=/dev/zvol/rdsk/rpool/omnios,if=ide,index=0 -net >>>> nic,vlan=0,name=net0,model=e1000,macaddr=2:8:20:e:15:33 -net >>>> vnic,vlan=0,name=net0,ifname=vnic10,macaddr=2:8:20:e:15:33 -vga std >>>> -daemonize >>>> >>>> -ashley >>>> _______________________________________________ >>>> OmniOS-discuss mailing list >>>> <a href="mailto:OmniOS-discuss@lists.omniti.com">OmniOS-discuss@lists.omniti.com</a> >>>> <a href="http://lists.omniti.com/mailman/listinfo/omnios-discuss" target="_blank">http://lists.omniti.com/mailman/listinfo/omnios-discuss</a> >>> >>> </div></div></blockquote></div> </div>