Login or Register to Ask a Question and Join Our Community

I/O Stats Metrics

Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users I/O Stats Metrics
# 1  
Old 06-07-2006
I/O Stats Metrics

What do others use for measuring I/O statistics? I'd like something versatile, as in being able to watch (like iostat, but easier to trend), generate load (like iozone, but more realistic), and perform somewhat generalized benchmarks (like bonnie, but more current.) It would scale from a few filesystems to several hundred filesystems.

Another utility I'd like to keep my eye for would be a way to list outstanding lock operations...

This would all be used on GNU/Linux systems, SLES and RHEL. Basically, generate a load of read/write activity similar to production without having actual production - piece of cake, no? Smilie
Login or Register to Ask a Question

Previous Thread | Next Thread

6 More Discussions You Might Find Interesting

1. AIX

Help Analyzing AIX System Metrics

Hi Guys, I need some help analyzing the attached metrics. System context is 2 LPAR's in a P795 running WebSphere App Server across 4 nodes (2 on each LPAR). Over the weekend both LPAR's lost power and upon re-start the application server response times have degraded by 25-30% for no obvious... (1 Reply)
Discussion started by: mgburns
1 Replies

2. AIX

Performance metrics between Dual Storage IOA versus other drive configurations

Greetings! We ordered a bunch of P7s as part of a hardware upgrade and I was made aware of the Dual Storage IOA configuration. This is something we hadn't fully considered and I was wondering if anyone had done any performance tests using this setup. All our IBM rep told us was "it's slower" and... (1 Reply)
Discussion started by: Mike Brendan
1 Replies

3. Shell Programming and Scripting

Performance Metrics using wget

I am looking for a way to measure performance metrics of streaming audio/video from a contecnt server, e.g. YouTube for example. Im keen to see if I can look at duration it took for contecnt to download. I know from the output of wget's log file you can see duration a url is downloaded in.... (5 Replies)
Discussion started by: rob171171
5 Replies

4. UNIX for Dummies Questions & Answers

Comparator or metrics tool - options

Hi all, I am looking for some open source comparator or metrics generator kind of tool. I am sure this is not something new that am asking and probably some of you would have already made use of that in your daily work. ... (2 Replies)
Discussion started by: matrixmadhan
2 Replies

5. Red Hat

Twelve success metrics to improve open source-ness

Open sourcing code is more than sticking an OSI approved license on it and putting it up on a public repository. Discussing this is getting to be a bit of a theme at Dev Fu, as many of our experienced open source developers are watching companies and projects swing wildly trying to hit the ball. ... (0 Replies)
Discussion started by: Linux Bot
0 Replies

6. UNIX for Advanced & Expert Users

Unix Metrics

Hi, Does anyone know of any programs that can create Unix (Solaris) server metrics such as server uptime, services uptime, processor utilization by hour by day, memory utilization by hour by day, active users by hour by day, etc? Thanks! (2 Replies)
Discussion started by: ghuber
2 Replies
Login or Register to Ask a Question
IOSTAT(8)						    BSD System Manager's Manual 						 IOSTAT(8)

iostat -- report I/O statistics SYNOPSIS
iostat [-CdDITx] [-c count] [-M core] [-N system] [-w wait] [drives] DESCRIPTION
iostat displays kernel I/O statistics on terminal, disk and CPU operations. By default, iostat displays one line of statistics averaged over the machine's run time. The use of -c presents successive lines averaged over the wait period. The -I option causes iostat to print raw, unaveraged values. Only the last disk option specified (-d, -D, or -x) is used. The options are as follows: -c count Repeat the display count times. Unless the -I flag is in effect, the first display is for the time since a reboot and each sub- sequent report is for the time period since the last display. If no wait interval is specified, the default is 1 second. -C Show CPU statistics. This is enabled by default unless the -d, -D, -T, or -x flags are used. -d Show disk statistics. This is the default. Displays kilobytes per transfer, number of transfers, and megabytes transferred. Use of this flag disables display of CPU and tty statistics. -D Show alternative disk statistics. Displays kilobytes transferred, number of transfers, and time spent in transfers. Use of this flag disables the default display. -I Show the running total values, rather than an average. -M core Extract values associated with the name list from the specified core instead of the default ``/dev/mem''. -N system Extract the name list from the specified system instead of the default ``/netbsd''. -T Show tty statistics. This is enabled by default unless the -C, -d, or -D flags are used. -w wait Pause wait seconds between each display. If no repeat count is specified, the default is infinity. -x Show extended disk statistics. Each disk is displayed on a line of its own with all available statistics. This option overrides all other display options, and all disks are displayed unless specific disks are provided as arguments. Additionally, separate read and write statistics are displayed. iostat displays its information in the following format: tty tin characters read from terminals tout characters written to terminals disks Disk operations. The header of the field is the disk name and unit number. If more than four disk drives are configured in the sys- tem, iostat displays only the first four drives. To force iostat to display specific drives, their names may be supplied on the com- mand line. KB/t Kilobytes transferred per disk transfer t/s transfers per second MB/s Megabytes transferred per second The alternative display format, (selected with -D), presents the following values. KB Kilobytes transferred xfr Disk transfers time Seconds spent in disk activity cpu us % of CPU time in user mode ni % of CPU time in user mode running niced processes sy % of CPU time in system mode id % of CPU time in idle mode FILES
/netbsd Default kernel namelist. /dev/mem Default memory file. SEE ALSO
fstat(1), netstat(1), nfsstat(1), ps(1), systat(1), vmstat(1), pstat(8) The sections starting with ``Interpreting system activity'' in Installing and Operating 4.3BSD. HISTORY
iostat appeared in Version 6 AT&T UNIX. The -x option was added in NetBSD 1.4. BSD
March 1, 2003 BSD

Featured Tech Videos