Date: Thu, 15 Oct 2015 16:06:51 -0453.75 From: "William A. Mahaffey III" <wam@hiwaay.net> Cc: FreeBSD Questions !!!! <freebsd-questions@freebsd.org> Subject: Re: Follow-up install questions Message-ID: <56201421.5060004@hiwaay.net> In-Reply-To: <CA%2BtpaK0WCYCEvBHBT6SDDA3s5eSpha=rCg%2B-16bBonYV0CXZqw@mail.gmail.com> References: <561F9FAC.9080308@hiwaay.net> <CA%2BtpaK1v=e8avEBEuHJKpcRnPXpqes7iBBgpsmgOpkWv=ah8pQ@mail.gmail.com> <561FAEE7.2030505@hiwaay.net> <CA%2BtpaK0WCYCEvBHBT6SDDA3s5eSpha=rCg%2B-16bBonYV0CXZqw@mail.gmail.com>
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On 10/15/15 11:23, Adam Vande More wrote: > On Thu, Oct 15, 2015 at 8:47 AM, William A. Mahaffey III > <wam@hiwaay.net <mailto:wam@hiwaay.net>> wrote: > > > I am not streaming 1080p streams on this box, that would be on the > smaller MythTV box. I will be using the larger box to compile > in-house analysis code (predominantly CFD, some FEA) & run > validation cases, some of which can/will produce prodigious > amounts of output, ASCII & binary. Larger data sets can take > plural min. to write on linux mdadm RAID0's, current 1st-hand > experience w/ the incumbent 1-box compile-farm-&-validation box, > Intel based. I/O performance *IS* an issue for me, sorry for the > bother. I configure *ALL* of my boxen to possibly serve as > validation & calculation boxen, maxed-out RAM & generous swap > space. Again, sorry for that bother. I am planning to follow the > wiki page > (https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE) > closely, obviously w/ more HDD's, in my setup, with just the one > (1) question about 'unmirrored zpools'. That page implies that > *any* zpool configuration will work, I am just trying to verify > that & save myself as many bumps in the road & wasted time as > possible. TIA for any further help & experience or sage advice. > Have a good one. > > > You're spending weeks of time reinventing wheels so chasing a wee bit > of disk io speed doesn't compute. 2 different boxen, not reinventing wheels, same specs for both all along, just trying to avoid the problems I am having w/ the small box on the large box. I have wanted max pool of GiB's & max I/O performance on both from the get-go, with as much reliability as I can reasonably get along the way. I am *NOT* an expert on these matters, which is why I come to the list for recommendations & experience. > Also using the 9 branch flies in the face of your stated desires. How so (9.3 contradicts), if you don't mind ? I thought all versions were fairly similar in ZFS implementation & performance, no ? > > A single SATA is going to do about 1GB in 10 seconds which is an order > of magnitude more what a 1Gb NIC would allow to transfer. > > & WTF about white space ? > > > https://www.gonzaga.edu/academics/Colleges-and-schools/School-of-Business-administration/undergraduate/SBAWR/IDR.asp Hmmmm .... OK, fair enough. Other have said that I write *WAY* too 'literarily', i.e. like prose, rather than technically .... I guess I might need that 12-step after all :-/ .... > > -- > Adam -- William A. Mahaffey III ---------------------------------------------------------------------- "The M1 Garand is without doubt the finest implement of war ever devised by man." -- Gen. George S. Patton Jr.
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