Re: [zfs-discuss] [mdb-discuss] mdb -k - I/O usage

2010-09-13 Thread Piotr Jasiukajtis
This is snv_128 x86. ::arc hits = 39811943 misses=630634 demand_data_hits = 29398113 demand_data_misses=490754 demand_metadata_hits = 10413660 demand_metadata_misses=133461 prefetch_data_hits= 0

Re: [zfs-discuss] [mdb-discuss] mdb -k - I/O usage

2010-09-10 Thread Piotr Jasiukajtis
Ok, now I know it's not related to the I/O performance, but to the ZFS itself. At some time all 3 pools were locked in that way: extended device statistics errors --- r/sw/s kr/s kw/s wait actv wsvc_t asvc_t %w %b s/w h/w trn tot device

Re: [zfs-discuss] [mdb-discuss] mdb -k - I/O usage

2010-09-10 Thread Carson Gaspar
On 9/10/10 4:16 PM, Piotr Jasiukajtis wrote: Ok, now I know it's not related to the I/O performance, but to the ZFS itself. At some time all 3 pools were locked in that way: extended device statistics errors --- r/sw/s kr/s kw/s wait actv

Re: [zfs-discuss] [mdb-discuss] mdb -k - I/O usage

2010-09-10 Thread Piotr Jasiukajtis
I don't have any errors from fmdump or syslog. The machine is SUN FIRE X4275 I don't use mpt or lsi drivers. It could be a bug in a driver since I see this on 2 the same machines. On Fri, Sep 10, 2010 at 9:51 PM, Carson Gaspar car...@taltos.org wrote: On 9/10/10 4:16 PM, Piotr Jasiukajtis wrote:

Re: [zfs-discuss] [mdb-discuss] mdb -k - I/O usage

2010-09-10 Thread Richard Elling
You are both right. More below... On Sep 10, 2010, at 2:06 PM, Piotr Jasiukajtis wrote: I don't have any errors from fmdump or syslog. The machine is SUN FIRE X4275 I don't use mpt or lsi drivers. It could be a bug in a driver since I see this on 2 the same machines. On Fri, Sep 10, 2010

Re: [zfs-discuss] [mdb-discuss] mdb -k - I/O usage

2010-09-06 Thread Jason Banham
On 06/09/2010 10:56, Piotr Jasiukajtis wrote: Hi, I am looking for the ideas on how to check if the machine was under high I/O pressure before it panicked (caused manually by an NMI). By I/O I mean disks and ZFS stack. Do you believe ZFS was a key component in the I/O pressure? I've CC'd