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VFS performance comparison

Tested VFSs

VFS Version Description
fuse-zip >=0.2.0 FUSE filesystem to mount, extract and modify ZIP archives (https://bitbucket.org/agalanin/fuse-zip)
kio-zip part of KDE3 KDE virtual filesystem
kio-krarc part of KDE3 Krusader's virtual filesystem
mc-uzip part of mc Midnight Commander VFS module
gfvs-fuse >=0.2.4 Gnome userspace virtual filesystem - fuse bridge
unpackfs >=0.0.6 Filesystem based on fuse (filesystem in userspace) for transparent unpacking of archives (http://savannah.nongnu.org/projects/unpackfs/)
avfs-fuse >=0.9.8 AVFS is a system, which enables all programs to look inside archived or compressed files, or access remote files without recompiling the programs or changing the kernel (http://sourceforge.net/projects/avf/)
fusej-zip 2.4-prerelease1 FUSE-J provides Java binding for FUSE. It comes with the "proof-of-concept" ZIP filesystem which seems to be pretty stable. (http://sourceforge.net/projects/fuse-j)

Test results

Compress files generated from /dev/zero (zip-zero)

Program real user system
fuse-zip 0.65 0.01 0.04
kio-zip n/a n/a n/a
kio-krarc 0.67 0.08 0.04
mc-uzip 1.05 0.92 0.12
gvfs-fuse n/a n/a n/a
unpackfs n/a n/a n/a
avfs-fuse n/a n/a n/a
fusej-zip n/a n/a n/a

Uncompress files generated from /dev/zero (unzip-zero)

Program real user system
fuse-zip 0.20 0.00 0.03
kio-zip 0.32 0.06 0.04
kio-krarc 0.32 0.05 0.00
mc-uzip 1.05 0.80 0.25
gvfs-fuse 1.84 0.20 0.07
unpackfs 0.32 0.00 0.10
avfs-fuse 0.23 0.00 0.02
fusej-zip 0.59 0.38 0.18

Compress files generated from /dev/urandom (zip-urandom)

Program real user system
fuse-zip 1.80 0.03 0.09
kio-zip n/a n/a n/a
kio-krarc 2.11 0.07 0.03
mc-uzip 2.10 1.88 0.20
gvfs-fuse n/a n/a n/a
unpackfs n/a n/a n/a
avfs-fuse n/a n/a n/a
fusej-zip n/a n/a n/a

Uncompress files generated from /dev/urandom (unzip-urandom)

Program real user system
fuse-zip 0.22 0.00 0.08
kio-zip 0.28 0.06 0.04
kio-krarc 0.37 0.06 0.00
mc-uzip 1.13 0.89 0.24
gvfs-fuse 1.97 0.14 0.22
unpackfs 0.51 0.01 0.12
avfs-fuse 0.26 0.00 0.07
fusej-zip 0.58 0.38 0.17

Compress files generated from /dev/{urandom,zero} (zip-mixed)

Program real user system
fuse-zip 3.30 0.04 0.20
kio-zip n/a n/a n/a
kio-krarc 3.46 0.12 0.05
mc-uzip 3.14 2.84 0.29
gvfs-fuse n/a n/a n/a
unpackfs n/a n/a n/a
avfs-fuse n/a n/a n/a
fusej-zip n/a n/a n/a

Uncompress files generated from /dev/{urandom,zero} (unzip-mixed)

Program real user system
fuse-zip 0.42 0.00 0.10
kio-zip 0.53 0.07 0.08
kio-krarc 0.65 0.06 0.01
mc-uzip 2.18 1.64 0.44
gvfs-fuse 2.28 0.30 0.32
unpackfs 0.80 0.01 0.17
avfs-fuse 0.49 0.00 0.13
fusej-zip 0.89 0.56 0.31

Extract one file from archive with many files (extract-one-1)

Program real user system
fuse-zip 0.03 0.01 0.01
kio-zip 0.09 0.04 0.01
kio-krarc 0.18 0.07 0.03
mc-uzip 0.08 0.07 0.01
gvfs-fuse 1.61 0.05 0.04
unpackfs 1.33 0.01 0.02
avfs-fuse 0.03 0.00 0.01
fusej-zip 0.29 0.20 0.07

Extract one file from big archive (extract-one-2)

Program real user system
fuse-zip 0.03 0.00 0.00
kio-zip 0.09 0.03 0.02
kio-krarc 0.18 0.09 0.02
mc-uzip 0.08 0.04 0.03
gvfs-fuse 1.58 0.03 0.03
unpackfs 0.62 0.01 0.01
avfs-fuse 0.03 0.01 0.00
fusej-zip 0.28 0.21 0.05

Add small file to small archive (add-small-small)

Program real user system
fuse-zip 0.05 0.01 0.01
kio-zip n/a n/a n/a
kio-krarc 0.13 0.04 0.02
mc-uzip 0.09 0.06 0.02
gvfs-fuse n/a n/a n/a
unpackfs n/a n/a n/a
avfs-fuse n/a n/a n/a
fusej-zip n/a n/a n/a

Add small file to big archive (add-small-big)

Program real user system
fuse-zip 0.75 0.01 0.08
kio-zip n/a n/a n/a
kio-krarc 0.53 0.06 0.03
mc-uzip 0.38 0.36 0.02
gvfs-fuse n/a n/a n/a
unpackfs n/a n/a n/a
avfs-fuse n/a n/a n/a
fusej-zip n/a n/a n/a

Add big file to small archive (add-big-small)

Program real user system
fuse-zip 0.05 0.00 0.02
kio-zip n/a n/a n/a
kio-krarc 0.13 0.05 0.01
mc-uzip 0.09 0.07 0.02
gvfs-fuse n/a n/a n/a
unpackfs n/a n/a n/a
avfs-fuse n/a n/a n/a
fusej-zip n/a n/a n/a

Add big file to big archive (add-big-big)

Program real user system
fuse-zip 0.66 0.00 0.06
kio-zip n/a n/a n/a
kio-krarc 0.53 0.07 0.02
mc-uzip 0.38 0.36 0.01
gvfs-fuse n/a n/a n/a
unpackfs n/a n/a n/a
avfs-fuse n/a n/a n/a
fusej-zip n/a n/a n/a

Compress (a part of) linux kernel sources (zip-linuxsrc)

Program real user system
fuse-zip 25.58 0.33 1.06
kio-zip n/a n/a n/a
kio-krarc 2005.02 5.91 1.04
mc-uzip 572.13 446.28 103.49
gvfs-fuse n/a n/a n/a
unpackfs n/a n/a n/a
avfs-fuse n/a n/a n/a
fusej-zip n/a n/a n/a

Uncompress (a part of) linux kernel sources (unzip-linuxsrc)

Program real user system
fuse-zip 2.93 0.12 0.79
kio-zip 12.63 4.42 0.80
kio-krarc 47.40 2.53 0.26
mc-uzip 2353.59 1870.04 381.76
gvfs-fuse FAIL FAIL FAIL
unpackfs 28.18 0.11 0.78
avfs-fuse 4.09 0.10 0.92
fusej-zip FAIL FAIL FAIL

Legend:

  • n/a -- functionality not supported
  • FAIL -- program crashed or freezed

Updated