Re: absurd I/O perf with ZFS: hangs on zfs-cv)

2013-01-18 Thread Fabian Keil
Eitan Adler li...@eitanadler.com wrote: On 17 January 2013 07:52, Fabian Keil freebsd-lis...@fabiankeil.de wrote: Eitan Adler li...@eitanadler.com wrote: I don't think there are any laptops with large amounts of RAM as far as ZFS is concerned. Haha okay: 8GB of RAM. It is taking me

Re: absurd I/O perf with ZFS: hangs on zfs-cv)

2013-01-18 Thread Eitan Adler
On 18 January 2013 05:20, Fabian Keil freebsd-lis...@fabiankeil.de wrote: A common recommendation is to disable atime for all datasets where it isn't needed as it can cause lots of unnecessary write operations. Good call. I thought I had already disabled atime updating but it turns out that

Re: absurd I/O perf with ZFS: hangs on zfs-cv)

2013-01-18 Thread Adam Vande More
On Tue, Jan 15, 2013 at 10:57 PM, Eitan Adler li...@eitanadler.com wrote: Hi all. Running FreeBSD 9.1-Release, I am seeing some absurd hangs (10 minutes or more to open a file) with SIGINFO informing me that the process is stuck on zio-io_cv. Does anyone have any suggestions for what I

Re: absurd I/O perf with ZFS: hangs on zfs-cv)

2013-01-17 Thread Eitan Adler
On 17 January 2013 07:52, Fabian Keil freebsd-lis...@fabiankeil.de wrote: Eitan Adler li...@eitanadler.com wrote: I don't think there are any laptops with large amounts of RAM as far as ZFS is concerned. Haha okay: 8GB of RAM. It is taking me 45 minutes to make 5 commits to git. Something

Re: absurd I/O perf with ZFS: hangs on zfs-cv)

2013-01-16 Thread Eitan Adler
On 15 January 2013 23:57, Eitan Adler li...@eitanadler.com wrote: Hi all. Running FreeBSD 9.1-Release, I am seeing some absurd hangs (10 minutes or more to open a file) with SIGINFO informing me that the process is stuck on zio-io_cv. Does anyone have any suggestions for what I want to

absurd I/O perf with ZFS: hangs on zfs-cv)

2013-01-15 Thread Eitan Adler
Hi all. Running FreeBSD 9.1-Release, I am seeing some absurd hangs (10 minutes or more to open a file) with SIGINFO informing me that the process is stuck on zio-io_cv. Does anyone have any suggestions for what I want to look at to tune this? This is on a newly bought laptop with large