32 days ago by H. Mijail Antón Quiles

I first thought about this as a lsof substitute, but no, it's more like a primitive / simple FIleMon/fs_usage. It shows the executable and the file it opened. Could be improved, of course. Dtrace is amazing. sudo dtrace -qn 'syscall::open*:entry{ printf("%s %s\n",execname,copyinstr(arg0)); }' fs_usa ...

H. Mijail's Blog - hmijailblog.blogspot.com

38 days ago by Björn 'raichoo' Herzig

I like the bleeding edge, that's why I always want to have the newest compilers for my favorite languages and Haskell is one of those languages. In this blogpost I'm going to show you how to build the latest and greatest GHC on the Illumos distribution OpenIndiana. If you don't want to build it your ...

raichoo :: λpunk - raichoo.blogspot.com · 4 references

52 days ago by Ewald Ertl

Today I have read in the Book DTrace about an investigation about the CPU usage of the firefox browser. There was the hint about the Plugin ToManyTabs, which allows to move open tabs to different rows, which act like closed tabs and the CPU usage drops. There is a small row in the header where you c ...

an enthusiastic austrian ... - ewaldertl.blogspot.com · 1 reference

55 days ago by Jill Burrows

PHP 5.4.0 will arrive soon. The PHP team is working to bring to some very nice presents to PHP developers. In the previous release of 5.3.0 they had added a few language changes. This version is no different. Some of the other changes include the ability to use DTrace for watching PHP apps in BSD va ...

Randomness - jburrows.wordpress.com · 1 reference

61 days ago by alexsalkever

Note: This post originally appeared on the DTrace blog of @brendangregg I recently helped analyze a performance issue in an unexpected but common place, where the fix improved performance of a task by around 2000x (two thousand times faster). As this is short, interesting and useful, I’ve reproduced ...

Joyeur - joyeur.com · Rank: 129,426 · 55 references

61 days ago by alexsalkever

Note: This post originally appeared on the DTrace blog of @brendangregg I recently helped analyze a performance issue in an unexpected but common place, where the fix improved performance of a task by around 2000x (two thousand times faster). As this is short, interesting and useful, I’ve reproduced ...

Joyeur - joyeur.com · Rank: 78,256 · 282 references

73 days ago by Deirdré Straughan

Part 3 of 5 on Examining File System Latency in Production, by Brendan Gregg, Lead Performance Engineer at Joyent and author with Jim Mauro of “ DTrace: Dynamic Tracing in Oracle Solaris, Mac OS X and FreeBSD” Here I’ll show how you can measure file system I/O latency – the time spent waiting for th ...

Joyeur - joyeur.com · Rank: 129,426 · 55 references

77 days ago by slfritchie

While working on the DTrace probes for the Erlang R15 release (which I’ve blogged about earlier this month), I discovered that the build recipe for FreeBSD 9.0 was broken. Oh no, my favorite OS doesn’t work, sound the alarm! FreeBSD has supported kernel-space DTrace probes for a while. However, supp ...

Humans and Hippos in Harmony - snookles.com/slf-blog

80 days ago by H. Mijail

How to know which processes are paging to/from disk (as opposed to other VMM management) in OS X, and how much exactly: sudo dtrace -n maj_fault'{@[execname] = count()}' reference (with examples and other options): http://wikis.sun.com/display/DTrace/vminfo+Provider I had been meaning to look for wa ...

H. Mijail's Blog - hmijailblog.blogspot.com

84 days ago by slfritchie

As mentioned in my previous posting, DTrace and Erlang: a status report, it’s also possible to use Linux’s SystemTap to watch the inner workings of the Erlang virtual machine. This is possible via a DTrace compatibility layer built in to SystemTap. In theory, any Linux system that supports user-spac ...

Humans and Hippos in Harmony - snookles.com/slf-blog