Displaying 2 results from an estimated 2 matches for "libmpscsi_vhci".
2010 Jun 21
0
Seriously degraded SAS multipathing performance
...ained write, asvc_t: 99 ms
With two paths connected, round-robin disabled, pin half the drives to
one path (path A), the other half of the drives to the other path (path B):
22 drives: 2.2 GB/s sustained write (1.1 GB/s per path), asvc_t: 12 ms
Multipath support info:
mpathadm show mpath-support libmpscsi_vhci.so
mpath-support: libmpscsi_vhci.so
Vendor: Sun Microsystems
Driver Name: scsi_vhci
Default Load Balance: round-robin
Supported Load Balance Types:
round-robin
logical-block
Allows To Activate Target Port Group Acces...
2008 Feb 15
38
Performance with Sun StorageTek 2540
Under Solaris 10 on a 4 core Sun Ultra 40 with 20GB RAM, I am setting
up a Sun StorageTek 2540 with 12 300GB 15K RPM SAS drives and
connected via load-shared 4Gbit FC links. This week I have tried many
different configurations, using firmware managed RAID, ZFS managed
RAID, and with the controller cache enabled or disabled.
My objective is to obtain the best single-file write performance.