Incremental dumps/Compression

	tenwiki-pages-meta-history	tenwiki-pages-meta-current	trwiki-pages-meta-history
.xml	99.8 MB	4.45 MB	97.3 GB
.xml.7z	2.04 MB		1.34 GB
.xml.bz2		888 kB
LZMA separate	35.7 MB	1.79 MB	> 18 GB
zdelta 1	4.50 MB
zdelta N 1	4.52 MB	1.76 MB
zdelta N 1 (skip empty)	4.47 MB
zdelta N 4	4.27 MB		3.06 GB
LZMA first + zdelta N 4	4.27 MB
zdelta N 4, groups per 100	4.61 MB	1.73 MB
zdelta N 4, groups per 10	7.28 MB
LZMA, one big group	3.29 MB
LZMA, groups per 256	3.66 MB	1.29 MB	2.32 GB
LZMA, groups per page per 256	4.15 MB
LZMA, groups per page per 100	4.30 MB

Detailed break up of “LZMA, groups per page per 256” for tenwiki-pages-meta-history:

• total: 4247 kB
  • file header and site info: 0 kB
  • indexes: 444 kB
  • metadata: 1976 kB
    • pages: 183 kB
    • revisions: 1792 kB
  • compressed texts: 1827 kB

Breakup for tenwiki-pages-meta-current:

• total: 1318 kB
  • file header and site info: 0 kB
  • indexes: 136 kB
  • metadata: 444 kB
    • pages: 114 kB
    • revisions: 329 kB
  • compressed texts: 737 kB

trwiki-pages-meta-history:

• total: 2 383 MB
  • file header and site info: 0 MB
  • indexes: 193 MB
  • metadata: 1 184 MB
    • pages: 81 MB
    • revisions: 1 102 MB
      • comments: 510 MB
      • users: 136 MB
      • SHA1s: 233 MB
      • rest: 222 MB
  • compressed texts: 1 005 MB

	elnews-20130814	elnews-20130824	elnews-20130814-20130824	increase
LZMA groups per 256	12 489 kB	12 500 kB	12 535 kB	35 kB
zdelta N 4	16 145 kB	16 169 kB	16 209 kB	40 kB