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On latency in event processing network
Post 302221732 by Linux Bot on Tuesday 5th of August 2008 04:50:01 AM
08-05-2008
On latency in event processing network
2008-08-05T09:13:00.005+03:00
Packing, on my way to a family vacation in Anatalya, Turkey.
Following an interesting discussion yesterday about performance metrics -- it turns out that definition of latency in event processing network is quite tricky. The reason is that an event can move in multiple paths over the network, in some it is filterred out, in some it just getting into internal state of agent since it does not complete a pattern, and in some it may complete a pattern and trigger reaction, thus there are various ways to define the metrics here. This is important since optimization has to take into account the goal function - what is being optimized. More discussion on this area -- after I'll return. I'll be out of touch for a week.
Source...
Packing, on my way to a family vacation in Anatalya, Turkey.
Following an interesting discussion yesterday about performance metrics -- it turns out that definition of latency in event processing network is quite tricky. The reason is that an event can move in multiple paths over the network, in some it is filterred out, in some it just getting into internal state of agent since it does not complete a pattern, and in some it may complete a pattern and trigger reaction, thus there are various ways to define the metrics here. This is important since optimization has to take into account the goal function - what is being optimized. More discussion on this area -- after I'll return. I'll be out of touch for a week.
Source...
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LEARN ABOUT DEBIAN
igrep
IGREP(1) General Commands Manual IGREP(1) NAME
igrep - search images for matching metadata SYNOPSIS
igrep [options] pattern files... DESCRIPTION
The igrep utility is invoked as follows: igrep [options] pattern filename... Where pattern is a POSIX.2 regular expression (just like the Unix/Linux grep(1) command), and filename (and any following names) specify images or directories that should be searched. An image file will "match" if any of its metadata contains values contain substring that are recognized regular expression. The image files may be of any format recognized by OpenImageIO (i.e., for which ImageInput plugins are available). Example: $ igrep Jack *.jpg bar.jpg: Keywords = Carly; Jack foo.jpg: Keywords = Jack test7.jpg: ImageDescription = Jack on vacation For a complete description, see /usr/share/doc/libopenimageio-dev/openimageio.pdf.gz. OPTIONS
--help Print help message -i Ignore upper/lower case distinctions -v Invert match (select non-matching files) -E Pattern is an extended regular expression -f Match against file name as well as metadata -l List the matching files (no detail) -r Recurse into directories -d Print directories (when recursive) -a Search all subimages of each file SEE ALSO iconvert(1), idiff(1), iinfo(1), iprocess(1), iv(1), maketx(1), oiiotool(1). AUTHOR
OpenImageIO was written by Larry Gritz and the other authors and contributors. This manual page was written by IRIE Shinsuke <irieshinsuke@yahoo.co.jp>, for the Debian project (and may be used by others). May 19, 2012 IGREP(1)