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Recent content by afatkulin

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    Could Nvidia get away with what AMD is currently (possibly) doing?

    This is assuming second card does nothing except burning power which I think is another extreme people need to stay away from right now until there is more data. I don't think half the frames are bogus but what about 15% or 10%? Just enough to give you the edge in the benches and not being too...
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    Could Nvidia get away with what AMD is currently (possibly) doing?

    The question is -- what's in that frame? Obviously it can't be just an entirely blank/empty frame otherwise there will be noticeable blinking, however, it could be the same frame as a previous one, rendered from a back buffer, such a frame would artificially boost your FPS, require little...
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    How is VMWare Workstation I/O working?

    OK, I can go into "advanced" settings for the disk and specify "virtual device node" that way, for some reason it doesn't ask for it when creating a disk and that's why I missed it. That's seems to be it as I can get 15k from each virtual controller. The only problem is there is only 4 of them max.
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    How is VMWare Workstation I/O working?

    I appreciate the reply but did you read the question? If it was over a single 1GbE link then multiple VMs won't be able to go over that limit wouldn't they? Anyway, it's a 2x10GbE links set up with iSCSI MPIO.
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    How is VMWare Workstation I/O working?

    Well there are no virtual controllers in VMWare Workstation unless I'm missing something. I did try the test the multiple virtual disks but they don't make a difference. That's what lead me to believe the IO must be choking somewhere on the hypervisor level. I can scale IO using multiple VMs off...
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    How is VMWare Workstation I/O working?

    Thanks for the reply. The storage is an iSCSI disk hooked from NAS so there are no controllers involved on the host where VMWare is running.
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    How is VMWare Workstation I/O working?

    I'm running VMWare Workstation 8 on top of a storage capable of doing 200K+ IOPS. The problem is I can't get more than 15K IOPS from a Linux guest no matter how man vCPU or iothreads I'm trying to use. Everything just piles up with wio as far as Linux guest sees it with the same 15K IOPS total...
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    Supermicro X9SRH-7TF -- 10Gig networking

    It is easily a bottleneck especially at home use where you can outfit you storage sever with enough ARC/L2ARC to cache the entire workset in memory. When data is cached in ARC you can easily push 2GB/s across 2x10GbE links with iSCSI MPIO.
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    ZFS: Struggling to understand thin provisioning behaviour.

    With blocksize=512 ZFS need to store a lot more metadata, remember each block needs to be stored and tracked internally. At 512b you'll have 16x more blocks to take care of compared to 8K. It'll make caching less efficient as well as there is a fixed overhead per cached block in ARC too.
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