Re: [zfs-discuss] OpenIndiana | ZFS | scrub | network | awful slow

2011-07-23 Thread Sven C. Merckens
Hi Richard, hi Daniel, hi Roy thanks for Your response.. Sorry for my delay, I spent a longer time ill in bed and didn't had the time to go on in testing the system: Am 19.06.2011 um 01:39 schrieb Richard Elling: You're better off disabling dedup for this workload. If the dedup ratio was

Re: [zfs-discuss] OpenIndiana | ZFS | scrub | network | awful slow

2011-06-18 Thread Richard Elling
On Jun 16, 2011, at 3:36 PM, Sven C. Merckens wrote: Hi roy, Hi Dan, many thanks for Your responses. I am using napp-it to control the OpenSolaris-Systems The napp-it-interface shows a dedup factor of 1.18x on System 1 and 1.16x on System 2. You're better off disabling dedup for this

Re: [zfs-discuss] OpenIndiana | ZFS | scrub | network | awful slow

2011-06-16 Thread Sven C. Merckens
Hi roy, Hi Dan, many thanks for Your responses. I am using napp-it to control the OpenSolaris-Systems The napp-it-interface shows a dedup factor of 1.18x on System 1 and 1.16x on System 2. Dedup is on always (not only at the start), also compression is activated: System 1 = compression on

Re: [zfs-discuss] OpenIndiana | ZFS | scrub | network | awful slow

2011-06-16 Thread Bill Sommerfeld
On 06/16/11 15:36, Sven C. Merckens wrote: But is the L2ARC also important while writing to the device? Because the storeges are used most of the time only for writing data on it, the Read-Cache (as I thought) isnĀ“t a performance-factor... Please correct me, if my thoughts are wrong. if

Re: [zfs-discuss] OpenIndiana | ZFS | scrub | network | awful slow

2011-06-15 Thread Roy Sigurd Karlsbakk
System1 (inhouse) SuperMicro-enclosure 2U SC825TQ Mainboard: X8DTH-IF 1 x 1 x Quad-Core Intel Xeon E5620 processor, 2.4GHz, 12MB L3 Cache 24GB of RAM (3 x 8GB) 1 x LSISAS9211-8I (for the internal 8 drive-carriers) 1 x LSISAS9200-8E (for the JBOD) attached is a 1 x

Re: [zfs-discuss] OpenIndiana | ZFS | scrub | network | awful slow

2011-06-15 Thread Daniel Carosone
On Wed, Jun 15, 2011 at 07:19:05PM +0200, Roy Sigurd Karlsbakk wrote: Dedup is known to require a LOT of memory and/or L2ARC, and 24GB isn't really much with 34TBs of data. The fact that your second system lacks the l2arc cache device is absolutely your prime suspect. -- Dan.

Re: [zfs-discuss] OpenIndiana | ZFS | scrub | network | awful slow

2011-06-15 Thread Brad Stone
3G per TB would be a better ballpark estimate. On Wed, Jun 15, 2011 at 8:17 PM, Daniel Carosone d...@geek.com.au wrote: On Wed, Jun 15, 2011 at 07:19:05PM +0200, Roy Sigurd Karlsbakk wrote: Dedup is known to require a LOT of memory and/or L2ARC, and 24GB isn't really much with 34TBs of data.