1 ## page was renamed from Comparision with Linux
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2 ## page was renamed from Comparision/Linux
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4 | **Feature** | **DragonFly** | **Linux**
5 Distribution formats | ISO image, pkgsrc, tarballs | ISO image, rpm, dpkg, tarballs
6 Distribution Depots | Central repository with mirrors for base, NetBSD mirrors for source packages, several binary package repositories | Debian: many mirrors; Redhat: central; Ubuntu: central; SUSE: ?
7 Number of Distributions | one (3 sibs: FreeBSD, NetBSD, OpenBSD; most popular: FreeBSD) | hundreds (most popular: RedHat, Debian (sub-distro: Ubuntu))
8 Update methods | git, cvsup, rsync, pkg_add | up2date, apt-get, pacman, emerge, etc.
10 Compiler | gcc 3.4,4.1.2 | gcc 3,4, gcc 3.4, gcc 4.1, gcc 4.2
11 Firewall | default: pf; other: ipfw2, ipf | default: iptables; other: pf
12 Livecd | yes (DVD) | yes, many sizes, versions
13 Kernel SCM | git | git
14 Default GUI | none (or bare X) | none, kde, gnome, xfce, etc.
15 File systems | UFS1, MFS, EXT2, FAT (16/32), NTFS (write experimental), HAMMER | EXT2, EXT3, FAT (16/32), NTFS (read-write experimental?), XFS, REISERFS, REISER4, JFS, ZFS, UFS2
16 Kernel compilable from supplied source? | Yes | Yes (depend on distro)
17 Predominant Licenses | 3-clause DragonFly, 3-clause BSD, 4-clause BSD, MIT, GPL | GPL, Lesser GPL, MIT, 3-clause BSD?
18 Commercial Support | Not yet | many; leaders: RedHat, Novell?
19 Processor Architectures | x86 | x86, AMD64, Sparc, PowerPC, etc
21 NUMA | under development | yes (depending on kernel?)
22 Boot loader | default: bsd boot block; lilo, grub work | default: lilo, grub
23 Disk partitioning | BSD-style: slices on fdisk'ed partitions | fdisk partitions
24 Logical volume management | vinum | LVM1, LVM2,
25 Release schedule | about twice a year (developer-driven) | Redhat: 18 month; Debian: feature-driven; Ubuntu: 6 month; Fedora Core: 6 months; |
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26 """]]DD:Distribution dependant
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28 ### Advantages over Linux
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32 * All you have to do is give credit.
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34 * Except where the 4-clause BSD License is used, of course: BSD License (http://en.wikipedia.org/wiki/BSD_License)
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38 * You can easily build your own base system / release / live cd.
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40 * The rpm based distros lack that.
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42 * Everything is developed in CVS. And the CVSROOT is available, so that you can download it and commit to your own repository.
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44 * Guaranteed to build from source
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46 * [jail(2)](http://leaf.dragonflybsd.org/cgi/web-man?section#2&commandjail) support
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48 * A jail is a [chroot(2)](http://leaf.dragonflybsd.org/cgi/web-man?section#2&commandchroot) on steroids with low overhead.
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50 * Since jails have their own IP, you can easily setup up Virtual Hosting enviroments on shared servers.
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54 * VKERNELs can be compared with UML.
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56 * Many packet filter packages:
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58 * ipf - by Darren Reed
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60 * ipfw2 - the successor to ipfw
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62 * pf - by Daniel Hartmeier and the OpenBSD project, the most flexible, can e.g. match Operating Systems
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66 * You can send a SIGINFO to a process (e.g. via CTRL-T) and it prints useful information e.g. fsck reports how many percent are done
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70 * CTRL-ALT-ESC in a console gives you a debugger prompt.
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72 * There are non-standard patches for something like that for Linux.
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74 * Debugging via a firewire console is also available, see dconschat(8)
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76 * Linux compatibility
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78 * Since the kernel exposes a Linux ABI, many Linux binaries run natively.
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80 * Integration of gcc 3.x and gcc 4.x
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82 * Easily switch your default compiler by setting the environment variable CCVER to gcc34 or gcc40.
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85 Using built-in specs.
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86 Configured with: ./configure --prefix#/usr --hosti386-just-dragonflybsd
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88 gcc version 3.4.3 [DragonFly] (propolice, visibility)
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90 ### Disadvantages compared to Linux
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91 Most of these disadvantages are curable, not inherent.
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94 * Less popular :-) which means fewer developers, testers
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96 * Linux ABI support not complete (actively developed)
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98 * Not all Linux binaries run.
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99 . e.g. we can't do the new nptl threading, but maybe possible in future.
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101 * No binary driver support from some graphics card companies
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