Hi all,
My System:
Freenas 9.1
Dual six core cpu
196MB RAM
24* 2TB 7200SAS 12*mirrored vdevs
4* 120GB eMLC sm843t samsung SSD (2*mirrored vevs) ZIL
2* 240GB L2ARC sm843t emlc ssd
2* 10Gbit NIC
I have setup my zil with (4*eMLC ssd) 2*mirrored vdevs underprovision to 8GB like this:
gpart create -s GPT da0
gpart create -s GPT da1
gpart create -s GPT da2
gpart create -s GPT da3
gpart add -t freebsd-zfs -a 4k -s 8192M da0
gpart add -t freebsd-zfs -a 4k -s 8192M da1
gpart add -t freebsd-zfs -a 4k -s 8192M da2
gpart add -t freebsd-zfs -a 4k -s 8192M da3
zpool add tank log mirror da0s1 da1s1
zpool add tank log mirror da2s1 da3s1
logs - - - - - -
mirror 11.7M 7.93G 0 11 0 167K
da0p1 - - 0 11 0 167K
da1p1 - - 0 11 0 167K
mirror 11.5M 7.93G 0 12 0 104K
da2p1 - - 0 12 0 104K
da3p1 - - 0 12 0 104K
My first quotations is:
Will i get more performance with 2*mirror like my setup?
Is there any tweaks to get mote zil performance?
I only get the zil to handle about 100MB/s when i use NFS, If i disaable zil on the dataset i get about 300MB/s
/J
My System:
Freenas 9.1
Dual six core cpu
196MB RAM
24* 2TB 7200SAS 12*mirrored vdevs
4* 120GB eMLC sm843t samsung SSD (2*mirrored vevs) ZIL
2* 240GB L2ARC sm843t emlc ssd
2* 10Gbit NIC
I have setup my zil with (4*eMLC ssd) 2*mirrored vdevs underprovision to 8GB like this:
gpart create -s GPT da0
gpart create -s GPT da1
gpart create -s GPT da2
gpart create -s GPT da3
gpart add -t freebsd-zfs -a 4k -s 8192M da0
gpart add -t freebsd-zfs -a 4k -s 8192M da1
gpart add -t freebsd-zfs -a 4k -s 8192M da2
gpart add -t freebsd-zfs -a 4k -s 8192M da3
zpool add tank log mirror da0s1 da1s1
zpool add tank log mirror da2s1 da3s1
logs - - - - - -
mirror 11.7M 7.93G 0 11 0 167K
da0p1 - - 0 11 0 167K
da1p1 - - 0 11 0 167K
mirror 11.5M 7.93G 0 12 0 104K
da2p1 - - 0 12 0 104K
da3p1 - - 0 12 0 104K
My first quotations is:
Will i get more performance with 2*mirror like my setup?
Is there any tweaks to get mote zil performance?
I only get the zil to handle about 100MB/s when i use NFS, If i disaable zil on the dataset i get about 300MB/s
/J