Date: Thu, 07 Aug 2014 15:33:01 -0400 From: Mike Tancsa <mike@sentex.net> To: "freebsd-emulation@freebsd.org" <emulation@freebsd.org> Subject: Re: Making disk IO place nicely in a guest (VirtualBox) Message-ID: <53E3D46D.1060302@sentex.net> In-Reply-To: <53E3C33E.5030004@sentex.net> References: <53E3C33E.5030004@sentex.net>
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On 8/7/2014 2:19 PM, Mike Tancsa wrote: > Hi, > I am running VirtualBox on RELENG_10 as the hypervisor with a > RELENG10 guest. I noticed, that when a do a lot of disk IO in the guest > where the hypervisor cannot keep up, this start to go "bad" in the guest. > > If I use the non default AHCI driver, the OS at least can kind of > recover. Using the default IDE drivers (non SATA , things panic quickly.) Actually, even with the ahci sata controller, the guest will eventually panic. I tried a FreeBSD guest on a Linux Virtualbox hypervisor and it did not panic the guest. Disk IO was consistent. ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/
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