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Solaris

Random or Sequential I/O? How to find out with DTrace

One of the perennial performance or sizing questions for a workload is how much I/O it generates. This can be broken down several ways: Network versus disk Read...

One of the perennial performance or sizing questions for a workload is how much I/O it generates. This can be broken down several ways: Network versus disk Read versus write Random versus sequential (for the disk component)Many of the metrics have always been easy to quantify. There are standard operating system tools to measure disk I/O, network packets and bytes, etc. The question of how much random versus sequential I/O is much harder to answer, but it can be an important...

nicstat update - version 1.95

Another minor nicstat release is now available. Changes for Version 1.95, January 2014 Common Added "-U" option, to display separate read and write utilization....

Another minor nicstat release is now available. Changes for Version 1.95, January 2014 Common Added "-U" option, to display separate read and write utilization. Simplified display code regarding "-M" option. Solaris Fixed fetch64() to check type of kstats Fixed memory leak in update_nicdata_list()Availabilitynicstat source and binaries are available from sourceforge. History For more history on nicstat and examples of use, see my earlier entry

How to Get Vim to do Filename Completion Even When You are Root

From the Obscure Unix Admin Tip of the Day section...If you occasionally edit files as root (I never do, I always use pfexec, wink wink), then you may have...

From the Obscure Unix Admin Tip of the Day section...If you occasionally edit files as root (I never do, I always use pfexec, wink wink), then you may have noticed that the vim (Vi Improved) editor that normally does filename completion via the <Tab> key now gives you something like::e /etc/mo^Iwhen you try to open up /etc/motd with a little less typingSo, there are at least five solutions to this: Use <Ctrl>-E instead of <Tab> Use the "-N" flag when you start Vim :set...

Mercurial says "nothing changed", but it did. Sometimes my software is too clever.

It seems I have found a "bug" in Mercurial. It takes a shortcut when checking for differences in tracked files. If the file's size and modification time are...

It seems I have found a "bug" in Mercurial. It takes a shortcut when checking for differences in tracked files. If the file's size and modification time are unchanged, it assumes its contents are unchanged:$ hg init .$ cp -p .sccs2hg/2005-06-05_00\:00\:00\,nicstat.c nicstat.c$ ls -ogE nicstat.c-rw-r--r-- 1 14722 2012-08-24 11:22:48.819451726 -0700 nicstat.c$ hg add nicstat.c$ hg commit -m "added nicstat.c"$ cp -p .sccs2hg/2005-07-02_00\:00\:00\,nicstat.c nicstat.c$ ls...

nicstat update - version 1.90

Yes! A new version is now available with some long-awaited features. Many thanks to those who suggested improvements and helped with testing.Changes for Version...

Yes! A new version is now available with some long-awaited features. Many thanks to those who suggested improvements and helped with testing.Changes for Version 1.90, April 2011Common nicstat.sh script, to provide for automated multi-platform deployment. See the Makefile's for details. Added "-x" flag, to display extended statistics for each interface. Added "-t" and "-u" flags, to include TCP and UDP (respectively) statistics. These come from tcp:0:tcpstat and udp:0:udpstat...

Which package delivers the file/directory I can not find?

Back in the day (ahem, Solaris 10 and earlier...) you could use a command like the following to figure out which package was responsible for; e.g.;...

Back in the day (ahem, Solaris 10 and earlier...) you could use a command like the following to figure out which package was responsible for; e.g.; "/usr/include/math.h", or any other "include/math.h", just in case it is somewhere less obvious:mashie$ fgrep include/math.h /var/sadm/install/contents/usr/include/math.h f none 0644 root bin 10514 7356 1249334889 SUNWlibmIn other words, /var/sadm/install/contents was a flat-file index of every file, directory, link, etc....