Hi Expert, Could you please let me know how much arc we should have if Phy memory is more then 4GB .

Here are arc statics

-------------------------------

p	=	< 1 MB
c	=	92 MB
c_min	=	64 MB
c_max	=	23535 MB

> ::memstat

Page Summary                Pages                MB  %Tot

------------     ----------------  ----------------  ----

Kernel                     922097              3601   15%

ZFS Metadata                26134               102    0%

ZFS File Data               13398                52    0%

Anon                       962318              3759   15%

Exec and libs                 142                 0    0%

Page cache                    775                 3    0%

Free (cachelist)            18838                73    0%

Free (freelist)           4343426             16966   69%

Total                     6287128             24559

Physical                  6287127             24559

>

One of the Customer is getting issue and their ZFS Appliance got hung  and they are   seeing below below msg

syslogd: malloc failed: dropping flush msg: Resource temporarily unavailable

syslogd: malloc failed: dropping message: Resource temporarily unavailable

syslogd: malloc failed: dropping message: Resource temporarily unavailable



I am suspecting arc size issue.Could you please suggest.