[OpenIndiana-discuss] OpenIndiana CPU Usage.

[Nicholas Metsovon]

I've been running Linux for more than ten years, but I'm pretty new to 
OpenSolaris.  


We want to put up a new website for videos, and we'd like a rock-solid stable 
system, so I've been looking at OpenSolaris - and primarily OpenIndiana.

We have a Dell PowerEdge 2900 with eight processing cores and 16GB Ram for this 
project.  


My question is this:  

When I have Linux loaded on this system, and I do a "top" command, it shows 
something like 99.3% idle most of the time.

When I have OpenIndiana, OpenSolaris, or Nexenta Core 3.0 on it, it shows more 
like 80% idle, with the majority of the remaining 20% listed as "kernel".

Is it normal for OpenSolaris to take up so much of the CPU just to run, compared 
to Linux?  


Is this likely to affect the overall performance of the server, compared to 
Linux, if we put this server in production with OpenIndiana?

I'm wondering if we'd be better off using Linux on this server?

Any advice / feedback would be appreciated.

Nico

---

Below is my top command, from an ssh session from my workstation:

This is basically a fresh install of OpenIndiana build 147.

load averages:  0.79,  0.50,  0.21;               up 
0+00:03:47                                                                  
22:29:42
63 processes: 62 sleeping, 1 on cpu
CPU states: 81.9% idle,  0.1% user, 18.0% kernel,  0.0% iowait,  0.0% swap
Kernel: 336 ctxsw, 1485 intr, 83 syscall
Memory: 16G phys mem, 15G free mem, 8191M total swap, 8191M free swap

   PID USERNAME NLWP PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND
   762 gdm         1  59    0   92M   25M sleep    0:02  0.05% gdm-simple-gree
   376 root        1  59    0 3552K 2132K sleep    0:00  0.03% hald-addon-acpi
   685 root        1  59    0   48M   34M sleep    0:06  0.03% Xorg
   778 dsadmin     1  59    0 3928K 2124K cpu/3    0:00  0.02% top
   766 dsadmin     1  59    0   13M 5456K sleep    0:00  0.02% sshd
   350 root        4  59    0 7000K 5620K sleep    0:01  0.02% hald
   297 root        6  59    0   10M 3624K sleep    0:00  0.01% devfsadm
   148 root        1  59    0 8312K 1688K sleep    0:00  0.01% dhcpagent
   761 gdm         1  59    0   87M   18M sleep    0:00  0.00% gnome-power-man
    47 netcfg      5  59    0 4780K 3696K sleep    0:00  0.00% netcfgd
   721 root        1  59    0 6208K 2148K sleep    0:00  0.00% sendmail
    11 root       21  59    0   14M   13M sleep    0:16  0.00% svc.configd
     9 root       14  59    0   20M   12M sleep    0:06  0.00% svc.startd
   755 gdm         1  59    0  104M   35M sleep    0:02  0.00% gnome-settings-
   624 root       26  59    0   24M   12M sleep    0:01  0.00% fmd
   286 root        5  60  -20 2608K 1536K sleep    0:00  0.00% zonestatd
   760 gdm         1  59    0   80M   13M sleep    0:00  0.00% metacity
   739 gdm         2  59    0   20M   10M sleep    0:00  0.00% gnome-session
   674 root        4  59    0   15M 6716K sleep    0:00  0.00% rad
   679 root        1  59    0   12M 6116K sleep    0:00  0.00% intrd
   752 gdm         1  59    0   12M 6060K sleep    0:00  0.00% gconfd-2
   754 gdm         1  59    0 7832K 5984K sleep    0:00  0.00% at-spi-registry
   356 root        1  59    0   16M 5792K sleep    0:00  0.00% cupsd
   133 daemon      3  59    0   13M 5248K sleep    0:00  0.00% kcfd
    93 root        9  59    0   11M 5212K sleep    0:00  0.00% nwamd
   757 gdm         2  59    0   12M 5176K sleep    0:00  0.00% bonobo-activati
   684 root        2  59    0   11M 4364K sleep    0:00  0.00% gdm-simple-slav
   522 root       27  59    0   11M 3896K sleep    0:00  0.00% nscd
   596 root        4  59    0   10M 3760K sleep    0:00  0.00% inetd
   765 root        1  59    0   11M 3672K sleep    0:00  0.00% sshd