SQUASHFS/squashfs-tools-4.4/RELEASE-READMEs/PERFORMANCE.README

   1 * Obsolete *
   2
   3 This file is now largely obsolete, considering
   4 it refers to Squashfs 2.1 (which was released in 2006)
   5 and older releases.
   6
   7 GENERAL INFORMATION ON PERFORMANCE TESTS
   8 ----------------------------------------
   9
  10 The following performance tests were based on two file sets: the
  11 liveCD filesystem from the Ubuntu liveCD (Warty release), and the
  12 liveCD filesystem from the Damn Small Linux liveCD (release 0.8.4).
  13 The Ubuntu liveCD filesystem was used to test filesystem performance
  14 from CDROM and hard disk for Zisofs, Cloop, Squashfs 2.0 and Squashfs2.1.
  15 CRAMFS filesystem performance could not be tested for this filesystem
  16 bacause it exceeds the maximum supported size of CRAMFS.  To test
  17 CRAMFS performance against Squashfs, the liveCD filesystem from
  18 Damn Small Linux was used.
  19
  20 NOTE: the usual warnings apply to these results, they are provided for
  21 illustrative purposes only, and due to different hardware and/or file data, you
  22 may obtain different results.  As such the results are provided "as is" without
  23 any warranty (either express or implied) and you assume all risks as to their
  24 quality and accuracy.
  25
  26 1. Ubuntu liveCD performance tests
  27
  28    ext3 uncompressed size      1.4 GB
  29    Zisofs compressed size      589.81 MB
  30    Cloop compressed size       471.89 MB
  31    Squashfs2.0 compressed size 448.58 MB
  32    Squashfs2.1 compressed size 448.58 MB
  33
  34 1.1 Performance tests from CDROM
  35
  36 1.1.1 Directory Lookup performance
  37
  38   Time taken to perform "ls -lR --color=alawys | cat > /dev/null" on filesystem
  39   mounted from CDROM
  40
  41   Zisofs       49.88 seconds (User 2.60 secs, Sys 11.19 secs)
  42   Cloop        20.80 seconds (User 2.71 secs, Sys 13.50 secs)
  43   Squashfs2.0  16.56 seconds (User 2.42 secs, Sys 10.37 secs)
  44   Squashfs2.1  10.14 seconds (User 2.48 secs, Sys 4.44 secs)
  45
  46 1.1.2 Sequential I/O performance
  47
  48   Time taken to perform "tar cf - | cat > /dev/null" on filesystem mounted
  49   from CDROM
  50
  51   Zisofs       27 minutes 28.54 seconds (User 3.00 secs, Sys 1 min 4.80 secs)
  52   Cloop        5 minutes 55.72 seconds (User 2.90 secs, Sys 3 min 37.90 secs)
  53   Squashfs2.0  5 minutes 20.87 seconds (User 2.33 secs, Sys 56.98 secs)
  54   Squashfs2.1  5 minutes 15.46 seconds (user 2.28 secs, Sys 51.12 secs)
  55
  56 1.1.3 Random I/O performance
  57
  58   Random access pattern generated by "find /mnt -type f -printf "%s %p\n" | sort
  59   -g | awk '{ printf $2 }' > /tmp/sort
  60
  61   Time taken to perform "cpio -o --quiet -H newc < /tmp/sort > /dev/null"
  62   on filesystem mounted from CDROM
  63
  64   Zisofs       101 minutes 29.65 seconds (User 5.33 secs, Sys  1 min 17.20 secs)
  65   Cloop        35 minutes 27.51 seconds (user 5.93 secs, Sys 4 mins 30.23 secs)
  66   Squashfs2.0  21 minutes 53.05 seconds (user 5.71 secs, Sys 2 mins 36.59 secs)
  67   Squashfs2.1  21 minutes 46.99 seconds (User 5.80 secs, Sys 2 mins 31.88 secs)
  68
  69
  70 1.2 Performance tests from Hard disk
  71
  72 1.2.1 Directory Lookup performance
  73
  74   Time taken to perform "ls -lR --color=alawys | cat > /dev/null" on filesystem
  75   mounted from Hard disk
  76
  77   Zisofs       17.29 seconds (User 2.62 secs, Sys 11.08 secs)
  78   Cloop        16.46 seconds (User 2.63 secs, Sys 13.41 secs)
  79   Squashfs2.0  13.75 seconds (User 2.44 secs, Sys 11.00 secs)
  80   Squashfs2.1  6.94 seconds (User 2.44 secs, Sys 4.48 secs)
  81
  82 1.2.2 Sequential I/O performance
  83
  84   Time taken to perform "tar cf - | cat > /dev/null" on filesystem mounted
  85   from Hard disk
  86
  87   Zisofs       1 minute 21.47 seconds (User 2.73 secs, Sys 54.44 secs)
  88   Cloop        1 minute 34.06 seconds (user 2.85 secs, Sys 1 min 12.13 secs)
  89   Squashfs2.0  1 minute 21.22 seconds (User 2.42 secs, Sys 56.21 secs)
  90   Squashfs2.1  1 minute 15.46 seconds (User 2.36 secs, Sys 49.78 secs)
  91
  92 1.2.3 Random I/O performance
  93
  94   Random access pattern generated by "find /mnt -type f -printf "%s %p\n" | sort
  95   -g | awk '{ printf $2 }' > /tmp/sort
  96
  97   Time taken to perform "cpio -o --quiet -H newc < /tmp/sort > /dev/null"
  98   on filesystem mounted from Hard disk
  99
 100   Zisofs       11 minutes 13.64 seconds (User 5.08 secs, Sys 52.62 secs)
 101   Cloop        5 minutes 37.93 seconds (user 6 secs, Sys 2 mins 22.38 secs)
 102   Squashfs2.0  5 minutes 7.11 seconds (user 5.63 secs, Sys 2 mins 35.23 secs)
 103   Squashfs2.1  5 minutes 1.87 seconds (User 5.71 secs, Sys 2 mins 29.98 secs)
 104
 105
 106 2. Damn Small Linux liveCD performance tests
 107
 108    ext3 uncompressed size      126 MB
 109    CRAMFS compressed size      52.19 MB
 110    Squashfs2.0 compressed size 46.52 MB
 111    Squashfs2.1 compressed size 46.52 MB
 112
 113 2.1 Performance tests from CDROM
 114
 115 2.1.1 Directory Lookup performance
 116
 117   Time taken to perform "ls -lR --color=alawys | cat > /dev/null" on filesystem
 118   mounted from CDROM
 119
 120   CRAMFS       10.85 seconds (User 0.39 secs, Sys 0.98 secs)
 121   Squashfs2.0  2.97 seconds (User 0.36 secs, Sys 2.15 secs)
 122   Squashfs2.1  2.43 seconds (User 0.40 secs, Sys 1.42 secs)
 123
 124 2.1.2 Sequential I/O performance
 125
 126   Time taken to perform "tar cf - | cat > /dev/null" on filesystem mounted
 127   from CDROM
 128
 129   CRAMFS       55.38 seconds (User 0.34 secs, Sys 6.98 secs)
 130   Squashfs2.0  35.99 seconds (User 0.30 secs, Sys 6.35 secs)
 131   Squashfs2.1  33.83 seconds (User 0.26 secs, Sys 5.56 secs)
 132
 133 2.1.3 Random I/O performance
 134
 135   Random access pattern generated by "find /mnt -type f -printf "%s %p\n" | sort
 136   -g | awk '{ printf $2 }' > /tmp/sort
 137
 138   Time taken to perform "cpio -o --quiet -H newc < /tmp/sort > /dev/null"
 139   on filesystem mounted from CDROM
 140
 141
 142   CRAMFS        3 minutes 1.68 seconds (User 0.54 secs, Sys 9.51 secs)
 143   Squashfs2.0   1 minute 39.45 seconds (User 0.57 secs, Sys 13.14 secs)
 144   Squashfs2.1   1 minute 38.41 seconds (User 0.58 secs, Sys 13.08 secs)
 145
 146 2.2 Performance tests from Hard disk
 147
 148 2.2.1 Directory Lookup performance
 149
 150   Time taken to perform "ls -lR --color=alawys | cat > /dev/null" on filesystem
 151   mounted from Hard disk
 152
 153   CRAMFS       1.77 seconds (User 0.53 secs, Sys 1.21 secs)
 154   Squashfs2.0  2.67 seconds (User 0.41 secs, Sys 2.25 secs)
 155   Squashfs2.1  1.87 seconds (User 0.41 secs, Sys 1.46 secs)
 156
 157 2.2.2 Sequential I/O performance
 158
 159   Time taken to perform "tar cf - | cat > /dev/null" on filesystem mounted
 160   from Hard disk
 161
 162   CRAMFS       6.80 seconds (User 0.36 secs, Sys 6.02 secs)
 163   Squashfs2.0  7.23 seconds (User 0.29 secs, Sys 6.62 secs)
 164   Squashfs2.1  6.53 seconds (User 0.31 secs, Sys 5.82 secs)
 165
 166 2.2.3 Random I/O performance
 167
 168   Random access pattern generated by "find /mnt -type f -printf "%s %p\n" | sort
 169   -g | awk '{ printf $2 }' > /tmp/sort
 170
 171   Time taken to perform "cpio -o --quiet -H newc < /tmp/sort > /dev/null"
 172   on filesystem mounted from Hard disk
 173
 174
 175   CRAMFS       28.55 seconds (User 0.49 secs, Sys 6.49 secs)
 176   Squashfs2.0  25.44 seconds (User 0.58 secs, Sys 13.17 secs)
 177   Squashfs2.1  24.72 seconds (User 0.56 secs, Sys 13.15 secs)