Poul-Henning Kamp
| Poul-Henning Kamp | |
|---|---|
Poul-Henning Kamp with Tux.
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| Born | 20 January 1966 |
| Residence | Slagelse, Denmark |
| Nationality | Danish |
| Other names | phk |
| Occupation | Programmer |
| Employer | Self-employed |
Poul-Henning Kamp (born 1966) is a Danish computer developer known for work on various projects. He currently resides in Slagelse, Denmark.
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Involvement in the FreeBSD project
Poul-Henning Kamp has been committing[1] to the FreeBSD project for most of its duration. He is responsible for the widely used MD5crypt implementation of the MD5 password hash algorithm,[2][3] a vast quantity of systems code including the FreeBSD GEOM storage layer, GBDE cryptographic storage transform, part of the UFS2 file system implementation, FreeBSD Jails, malloc library, and the NTP timecounters code.
Most notable projects
He is the lead architect and developer for the open source Varnish cache project, an HTTP accelerator and Ntimed, an NTP daemon meant to replace ntpd.
Dispute with D-Link
His dispute with electronics manufacturer D-Link in which he claimed they were committing NTP vandalism by embedding the IP address of his NTP servers in their routers was resolved on 27 April 2006.[4][5]
Other
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built with FreeBSD clang version 14.0.5 (https://github.com/llvm/llvm-project.git llvmorg-14.0.5-0-gc12386ae247c)
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libavutil 58. 2.100 / 58. 2.100
libavcodec 60. 3.100 / 60. 3.100
libavformat 60. 3.100 / 60. 3.100
libavdevice 60. 1.100 / 60. 1.100
libavfilter 9. 3.100 / 9. 3.100
libswscale 7. 1.100 / 7. 1.100
libswresample 4. 10.100 / 4. 10.100
libpostproc 57. 1.100 / 57. 1.100
[matroska,webm @ 0x859657280] File ended prematurely
Last message repeated 2 times
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Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
A post by Poul-Henning on the FreeBSD mailing lists[6][dead link] is responsible for the popularization of the term bike shed discussion, and the derived term bikeshedding, to describe Parkinson's law of triviality in open source projects - when the amount of discussion that a subject receives is inversely proportional to its importance.
Poul-Henning Kamp is known for his preference of a Beerware license to the GNU General Public License (GPL).[7]
Publications
Poul-Henning Kamp has published a substantial number of articles over the years in publications like Communications of the ACM and ACM Queue mostly on the topics of computing and time keeping. A selection of publications:
- USENIX ATC 1998 FREENIX track, "malloc(3) Revisited"
- USENIX BSDCon 2003, GBDE-GEOM Based Disk Encryption
- USENIX BSDCon 2002, Rethinking /dev and devices in the UNIX kernel
- ACM Queue: Building Systems to be Shared Securely
- ACM Queue: You're doing it wrong
- Communications of the ACM 2011: The Most Expensive One-Byte Mistake
- Communications of the ACM 2011: The One-Second War
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ "A bike shed (any colour will do) on greener grass...", freebsd-hackers mailing list, 1999
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
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Wikimedia Commons has media related to Poul-Henning Kamp. |
