[zfs-discuss] ZFS send/recv horribly slow on system with 1800+ filesystems

2011-02-28 Thread Moazam Raja
Hi all, I have a test system with a large amount of filesystems which we take snapshots of and do send/recvs with. On our test machine, we have 1800+ filesystems and about 5,000 snapshots.The system has 48GB of RAM, and 8 cores (x86). The filesystem is comprised of 2 regular 1TB in a mirror with a

Re: [zfs-discuss] Format returning bogus controller info

2011-02-28 Thread Dave Pooser
On 2/28/11 4:23 PM, "Garrett D'Amore" wrote: >Drives are ordered in the order they are *enumerated* when they *first* >show up in the system. *Ever*. Is the same true of controllers? That is, will c12 remain c12 or /pci@0,0/pci8086,340c@5 remain /pci@0,0/pci8086,340c@5 even if other controllers

Re: [zfs-discuss] Format returning bogus controller info

2011-02-28 Thread James C. McPherson
On 1/03/11 07:02 AM, Roy Sigurd Karlsbakk wrote: ... Last I checked, it didn't help much. IMHO we need a driver that can > display the drives in the order they're plugged in. Like Windoze. > Like Linux. Like FreeBSD. I really don't understand what should be > so hard to do it like the others. A

Re: [zfs-discuss] Format returning bogus controller info

2011-02-28 Thread James C. McPherson
On 1/03/11 03:00 AM, Dave Pooser wrote: On 2/27/11 11:13 PM, "James C. McPherson" wrote: /pci@0,0/pci8086,340c@5/pci1000,3020@0 and /pci@0,0/pci8086,340e@7/pci1000,3020@0 which are in different slots on your motherboard and connected to different PCI Express Root Ports - which should help wi

Re: [zfs-discuss] ZFS Performance

2011-02-28 Thread Brandon High
On Sun, Feb 27, 2011 at 7:35 PM, Brandon High wrote: > It moves from "best fit" to "any fit" at a certain point, which is at > ~ 95% (I think). Best fit looks for a large contiguous space to avoid > fragmentation while any fit looks for any free space. I got the terminology wrong, it's first-fit

Re: [zfs-discuss] Format returning bogus controller info

2011-02-28 Thread Roy Sigurd Karlsbakk
> > I cannot but agree. On Linux and Windoze (haven't tested FreeBSD), > > drives connected to an LSI9211 show up in the correct order, but not > > on OI/osol/S11ex (IIRC), and fmtopo doesn't always show a mapping > > between device name and slot, since that relies on the SES hardware > > being pro

Re: [zfs-discuss] ZFS Performance

2011-02-28 Thread Torrey McMahon
On 2/25/2011 4:15 PM, Torrey McMahon wrote: On 2/25/2011 3:49 PM, Tomas Ă–gren wrote: On 25 February, 2011 - David Blasingame Oracle sent me these 2,6K bytes: > Hi All, > > In reading the ZFS Best practices, I'm curious if this statement is > still true about 80% utilization. It happens at

Re: [zfs-discuss] Format returning bogus controller info

2011-02-28 Thread Dave Pooser
On 2/27/11 11:13 PM, "James C. McPherson" wrote: >/pci@0,0/pci8086,340c@5/pci1000,3020@0 >and >/pci@0,0/pci8086,340e@7/pci1000,3020@0 > >which are in different slots on your motherboard and connected to >different PCI Express Root Ports - which should help with transfer >rates amongst other thing