Re: some general zfs tuning (for iSCSI)

2017-08-03 Thread Eugene M. Zheganin
Hi. On 02.08.2017 17:43, Ronald Klop wrote: On Fri, 28 Jul 2017 12:56:11 +0200, Eugene M. Zheganin wrote: Hi, I'm using several FreeBSD zfs installations as the iSCSI production systems, they basically consist of an LSI HBA, and a JBOD with a bunch of SSD disks (12-24, Intel, Toshiba or

Re: some general zfs tuning (for iSCSI)

2017-08-02 Thread Ronald Klop
On Fri, 28 Jul 2017 12:56:11 +0200, Eugene M. Zheganin wrote: Hi, I'm using several FreeBSD zfs installations as the iSCSI production systems, they basically consist of an LSI HBA, and a JBOD with a bunch of SSD disks (12-24, Intel, Toshiba or Sandisk (avoid Sandisks btw)). And I obse

some general zfs tuning (for iSCSI)

2017-07-28 Thread Eugene M. Zheganin
Hi, I'm using several FreeBSD zfs installations as the iSCSI production systems, they basically consist of an LSI HBA, and a JBOD with a bunch of SSD disks (12-24, Intel, Toshiba or Sandisk (avoid Sandisks btw)). And I observe a problem very often: gstat shows 20-30% of disk load, but the sy