How stable is the technology?

• UNICS process seperation: September 1969
• UNIX chroot(): BSD 4.2 - August 1983

• Linux vhost: December 1997, Jacques Gelinas
• Linux capabilities: August 1999, in Linux 2.2.11
• http://ftp.kernel.org/pub/linux/libs/security/linux-privs/kernel-2.4/capfaq-0.2.txt
• s_context & vserver: October 2001, Jacques Gelinas
• http://www.ussg.iu.edu/hypermail/linux/kernel/0110.1/0909.html (for Linux 2.4.10 - 2.4.11)
• Original patch - ftp://ftp.solucorp.qc.ca/pub/vserver/old/patch-2.4.10ctx

• VServer 1.0: November 2003, Herbert Poetzl, for 2.4.20 - 2.4.22 (and later ported to 2.4.24)
• http://list.linux-vserver.org/archive/vserver/msg04823.html

• VServer 1.2.10: January 2005, Herbert Poetzl, for 2.4.29 - 2.4.30
• http://list.linux-vserver.org/archive/vserver/msg08770.html

• VServer 2.0: August 2005, Herbert Poetzl, for 2.6.12.4
• http://list.linux-vserver.org/archive/vserver/msg10276.html

• VServer 2.01: December 2005, Herbert Poetzl, for 2.6.14.3
• [[http://list.linux-vserver.org/archive/vserver/msg11727.html][foo]]

• which means...
• vserver is 4 years old
• it's survived 2 major and about 30 minor kernel versions
• it's been through 4 major versions itself, with >100 releases
• not exactly "bleeding edge"