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Solaris Feed

Oracle Solaris, Solaris 10, Solaris 11 Express, Solaris 11, Oracle VM for SPARC and Illumos resources, news, and support articles.

dtrace

DTrace Introduction

DTrace is Solaris 10's Dynamic Tracing facility. It allows us to peer into the innards of running processes and customize our view to exclude extraneous information and close in on the source of a problem.

DTrace also has capabilities that allow us to examine a crash dump or trace the boot process.

May 10, 2013 12:30am

iostat

iostat

As with most of the monitoring commands, the first line of iostat reflects a summary of statistics since boot time. To look at meaningful real-time data, run iostat with a time step (eg iostat 30) and look at the lines that report summaries over the time step intervals.

For Solaris 2.6 and higher, use iostat -xPnce 30 to get information including the common device names of the disk partitions, CPU statistics, error statistics, and extended disk statistics.

May 09, 2013 12:30am

truss

truss

truss traces library and system calls and signal activity for a given process. This can be very useful in seein where a program is choking.

May 08, 2013 12:30am

Sun Cluster

Sun Cluster

Introduction

Sun Cluster 3.2 has the following features and limitations:

  • Support for 2-16 nodes.
  • Global devicecapability--devices can be shared across the cluster.
  • Global file system --allows a file system to be accessed simultaneously by all cluster nodes.
  • Tight implementation with Solaris--The cluster framework services have been implemen

May 07, 2013 12:30am

Process Virtual Memory

Process Virtual Memory

Each process maps either 2^32 or 2^44 bytes of memory (depending on whether the OS is running in 32 or 64-bit mode). This works out to 4GB or 16TB. Not all of this memory is allocated (used); the virtual memory is used as address space that can be mapped to actual memory resources.

Virtual memory structure for a process can be described as in this diagram:

May 06, 2013 1:00am

Delphix and Flash

May 05, 2013 9:28pm

Solaris Processes

Solaris Processes

The process is one of the fundamental abstactions of Unix. Every object in Unix is represented as either a file or a process. (With the introduction of the /proc structure, there has been an effort to represent even processes as files.)

May 03, 2013 12:30am

Setting up Oracle Solaris 11 with DHCP and LDAP

Someone asked me how to setup a LDAP client on Solaris if you are using DHCP. I thought it would be a simple answer since Solaris comes with Automatic Network mode. The Automatic mode does a very good job and you can configure a lot of settings, but LDAP support is very limited.

Configuring LDAP When in Automatic Mode (Ref: from Managing Network Configuration When in Automatic Mode)

May 02, 2013 8:32am

Basic NFS Troubleshooting

NFS Troubleshooting

Sun's web pages contain substantial information about NFS services; search for an NFS Administration Guide or NFS Server Performance and Tuning Guide for the version of Solaris you are running. The share_nfs man page contains specific information about export options.

May 02, 2013 12:30am

Native Solaris Storage Multipathing with mpathadm

Solaris Multipathing

The “Solaris FC and Storage Multipathing Software” is included with the Solaris 10 license. It is enabled by default with the Solaris 10x86 installation, but is optional in the Sparc installlation.

Currently, the software supports multipathing for fibre channel connections using supported host bus adapters. It does not currently support multipathing for parallel SCSI devices or IP over FC.

May 01, 2013 12:30am
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