Disk busy is close to 100% disk waiting time is 0,0% primary purpose of this machine is running application server on jvm. Solaris 10 operating system solaris 10 106 solaris 10. Prior to solaris 10 10 08, although it was possible to run a zone on zfs, an upgrade was not supported. At this time vdbench has been tested on solaris sparc and x86, windows nt, 2000, 2003, 2008. If no device nor partition is entered, then statistics are displayed. Jul 25, 2019 the m parameter tells iostat to display metrics in megabytes per second instead of blocks or kilobytes per second. For multiprocessor systems, the cpu values are global averages among all processors.
You may then find you sent the wrong instructions, and need to repeat the. Most common of all is the native packaging format, installp. Solaris performance metrics disk utilisation by process. It can also be used to troubleshoot a cpu performance issue as well. Your input is an important part of the information used for revision. Displaying disk utilization information iostat use the iostat command to report statistics about disk input and output, and to produce measures of throughput, utilization, queue lengths, transaction rates, and service time. Example 3 using iostat to generate partition and device statistics the following command generates partition and device statistics for each disk. It can also be used to provide information about terminal tty input and output, and also. Performance monitoring iostat identify io bottlenecks.
Also found the following detail from an alternate site io bottleneck disk performance issue unixarena1. How to interpret error counters for the solaris iostat e. Version 10 is the current stable version of sysstat. You have freedom to copy and modify this gnu manual, like gnu software. I tried iostat xnp, but i guess its not giving me the complete information. The iostat command can print a variety of different outputs, depending on which commandline options were used. Is there a consistent way to map these names back to the standard devdskc.
However interpreting the output has proved in the past to cause problems. See solaris transition guide for device naming conventions for disks. With the new zfs file system by solaris 10, this can be achieved with little effort. The iostat command generates reports that can be used to change system configuration to better balance the inputoutput load between physical disks the first report generated by the iostat command.
Iostat hard error on solaris solutions experts exchange. Aix also has the ability to handle red hats rpm format, interim fixes. Solaris performance tuning introduction, tools and rules. I am looking for a cat procdiskstats from linux equivalent in solaris os, to get disk stats such as reads per sec, writes per sec, kb reads per sec, kb writes per sec. The iostat command is used for monitoring system inputoutput device loading by observing the time the devices are active in relation to their average transfer rates.
After link recovery i decided clean all io errors on this device. The tps number here is the number of io operations per second iops. For example, the following gives the system cpu statistics 3 times with 1 second interval. Many of the areas on solaris control panel are multipage. Displaying disk utilization information iostat system.
What does it mean if iostat shows 100% busy wait but the cpu is completely idle. These page out the main controls for the step sequencer controls. The second report generated by the iostat command is the device utilization report. An io performance bottleneck can be due to a disk or even due to a hba or a hba driver. Copies published by the free software foundation raise funds for gnu development. Please tell me the easiest way to troubleshoot solaris reset iostat counters. We have a busy server, chocking under a high io load, at least, thats the feeling i have. Some commands in solaris such as iostat report disk related information using disk names such as sd0 or sdd2. Often when people write a separate user guide and system administrators guide they write in an overlap so that you dont have to have both books to understand more about the interaction between a system administrator and a user. Since solaris 10 10 08, zfs can be used as zone root. Please let me know if it finds a problem post a blank message.
Can anyone give me some insight into the following output from iostat bash3. Solaris performance metrics disk utilisation by process 4 question on solaris 9 or earlier, how do you measure disk io by process. My application runs for a while, then goes into this state periodically for about 1020 seconds. For a detailed description of this command, refer to the iostat1m man page. The iostat xnp command is already providing all the information you requested the fact there is no specific line for c1t1d0s2 is due to the fact there is no partition table on the cdrom. Solaris performance tuning introduction, tools and rules manual sections solaris 2 security, performance and accounting generic svr4 based sysadmin manual seriously lacking in both content and accuracy, some. If the average service time is exceeding more than 25, then there is issue in the. Recently i discovered that on one of our machines there are a lots io transmission errors releated with failed path to san. Because the n option is used with the x option, disks are identified by controller names. C120e68108en november 2014 page 2 the furnishings of this document to you does not give you any rights or licenses, express or implied, with respect to the product or technology to which it pertains, and this document does not contain or represent any commitment of any kind on the part of oracle or fujitsu limited or any. These reports are intended to help identify system bottlenecks. If the average service time is exceeding more than 25.
The command iostat input output statistics help us to get started with analyzing a disk io bottleneck issue. Aix has the ability to handle multiple different packaging formats. The iostat utilitys activity class options default to tdc terminal, disk, and cpu. The iostat create reports that can be used to change system configuration to better balance the inputoutput between physical disks. My application runs for a while, then goes into this state periodically for about 10 20 seconds. The iostat command generates three types of reports. Displaying disk utilization information iostat oracle. Although solaris does win back users with its support for high end cad and graphics design applications. Get cpu instruction set information such as sse, sse2, mmx, etc. In this mode, iostat still delivers a lot of information so that viewing only information about a certain device can be specified further. Dec 12, 2015 iostat command is a command that used for monitoring system inputoutput device loading by observing the time the devices are active in relation to their average transfer rates. Mar 29, 2011 once installed, verify the sar version using sar v.
With ask the experts, submit your questions to our certified professionals and receive unlimited, customized solutions that work for. Displaying disk utilization information iostat oracle solaris. While this linux command provides an absolute wealth of io information, the sheer amount of it all can make it hard to see the forest for the trees. Gday guys, im having some strange issues on my solaris express 11 and zfs. The device report provides statistics on a perphysical device or partition basis. Use the iostat command to report statistics about disk input and output, and to produce measures of throughput, utilization, queue lengths, transaction rates, and. Vdbench is written in java with the objective of supporting oracle heterogeneous attachment. When i do iostat en grep i hard error, i can see 180 hard error, but when i looked at varadmmessages, there is nothing about this disk. Page 1 fujitsu m101sparc m101 service manual manual code.
For more general system statistics, use sar1, sar1m, or vmstat1m. Since solaris 10 1008, zfs can be used as zone root. Use the iostat command to report statistics about disk input and output, and to. Table b10 monitoring commands for linux and solaris. As amit points out, iostat n produces device names such as eg c0t0d0s0 instead of sd0. Disk, iostat, ctrl stats are still incorrect for t0001 in some cases. The first report generated by the iostat command is the cpu utilization report. Solaris operating system is also abbreviated to solaris os. For a detailed description of this command, refer to the iostat 1m man page how to display disk utilization information iostat. Within each of these two larger sections are many more page buttons. First if you are looking at latency issues it is vital that you use the smallest time quantum to iostat you can, which as of solaris 10. Solaris flash archives creation and installation html. Can anyone give me some insight into the following output from iostatbash3. I am facing strange behaviour of iostat command and top command.
Linux iostat command help and examples computer hope. In versions of solaris before solaris 7, iostat can give misleading information in the wait field. Device names can be added as another argument to the iostat command. Fujitsu m10 is sold as sparc m10 systems by fujitsu in japan. Block devices and partitions for which statistics are to be displayed may be entered on the command line. Options iostat s activity class options default to tdc terminal, disk, and cpu.
To execute every 2 seconds for a total of 3 times, do the following. For a detailed description of this command, refer to the iostat 1m man page. How to interpret error counters for the solaris iostat e output. Linux vmstat does not count itself as a running process. It is often used to identify performance issues with storage devices, including local disks, or remote disks accessed over network file systems such as nfs.
Tips for troubleshooting iostat hard errors solaris fix. Im getting a lot of iostat errors on one of my zpools when i it under load. Options iostats activity class options default to tdc terminal, disk, and cpu. Page 1 solaris multigas detector operating manual manufactured by msa instrument division p. If any activity class options are specified, the default is completely overridden.
In this post, well talk about interpreting this data. Oracle solaris command casebook for linux users fujitsu. To execute iostat every 2 seconds until you press ctlc, do the following. Prior to solaris 10 1008, although it was possible to run a zone on zfs, an upgrade was not supported. Old kernels may report blocks as 512 bytes, 2048 bytes, or 4096 bytes. Early solaris version failed on getvmusage call referenced symbol not found fix. Box 427, pittsburgh, pennsylvania 15230 european manual rev 01 102003 page 2 the warranties made by msa auer with respect to the product are voided if the product is not used and serviced in accordance with the instructions in this manual. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Iostat is one of the most useful command when troubleshooting a disk io performance issue. It can also be used to provide information about terminal tty input and.