Yes, I'm aware, that problem can be hidden in many places. MTU is 1500. All nics and their setup are included at this email.
Martin -----Original Message----- From: Dan McDonald [mailto:dan...@omniti.com] Sent: Wednesday, September 09, 2015 6:32 PM To: Martin Truhlář Cc: omnios-discuss@lists.omniti.com; Dan McDonald Subject: Re: [OmniOS-discuss] iSCSI poor write performance > On Sep 9, 2015, at 12:24 PM, Martin Truhlář <martin.truh...@archcon.cz> wrote: > > Hello everybody, > > I have a problem here, I can’t move with. My Windows server runs as virtual > machine under KVM. I’m using a 10GB network card. On this hw configuration I > expect much better performance than I’m getting. Two less important disks > uses KVM cache, that improve performance a bit. But I don’t want to use KVM‘s > cache for system and databases disks and there I’m getting 6MB/s for writing. > Also 4K writing is low even with KVM cache. So you have windows on KVM, and KVM is using iSCSI to speak to OmniOS? That's a lot of indirection... Question: What's the MTU on the 10Gig Link? Dan
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