[root@MySQL56_L1 mysql]# wget https://cache.ruby-china.org/pub/ruby/ruby-1.9.3-p551.tar.gz
--2017-01-19 14:06:35--  https://cache.ruby-china.org/pub/ruby/ruby-1.9.3-p551.tar.gz
Resolving cache.ruby-china.org... 183.61.64.66, 121.201.98.27, 2405:fd80:110:0:d63d:7eff:fe73:c46, ...
Connecting to cache.ruby-china.org|183.61.64.66|:443... connected.
ERROR: certificate common name “*.b0.upaiyun.com” doesn’t match requested host name “cache.ruby-china.org”.
To connect to cache.ruby-china.org insecurely, use ‘--no-check-certificate’.

[root@MySQL56_L1 mysql]# wget --no-check-certificate https://cache.ruby-china.org/pub/ruby/ruby-1.9.3-p551.tar.gz
--2017-01-19 14:07:31--  https://cache.ruby-china.org/pub/ruby/ruby-1.9.3-p551.tar.gz
Resolving cache.ruby-china.org... 121.201.98.27, 183.61.64.66, 2405:fd80:110:0:d63d:7eff:fe73:165a, ...
Connecting to cache.ruby-china.org|121.201.98.27|:443... connected.
WARNING: certificate common name “*.b0.upaiyun.com” doesn’t match requested host name “cache.ruby-china.org”.
HTTP request sent, awaiting response... 200 OK
Length: 12605119 (12M) [application/octet-stream]
Saving to: “ruby-1.9.3-p551.tar.gz”

100%[=================================================================================================================>] 12,605,119   287K/s   in 47s     

2017-01-19 14:08:23 (262 KB/s) - “ruby-1.9.3-p551.tar.gz” saved [12605119/12605119]

[root@MySQL56_L1 mysql]# yum -y install zlib-devel curl-devel openssl-devel httpd-devel apr-devel apr-util-devel

[root@MySQL56_L1 mysql]# tar -zxvf ruby-1.9.3-p551.tar.gz 

[root@MySQL56_L1 ruby-1.9.3-p551]# ./configure
[root@MySQL56_L1 ruby-1.9.3-p551]# make && make install
[root@MySQL56_L1 ruby-1.9.3-p551]# gem install innodb_ruby

[root@MySQL56_L1 data]# innodb_space --help

Usage: innodb_space <options> <mode>

Invocation examples:

  innodb_space -s ibdata1 [-T tname [-I iname]] [options] <mode>
    Use ibdata1 as the system tablespace and load the tname table (and the
    iname index for modes that require it) from data located in the system
    tablespace data dictionary. This will automatically generate a record
    describer for any indexes.

  innodb_space -f tname.ibd [-r ./desc.rb -d DescClass] [options] <mode>
    Use the tname.ibd table (and the DescClass describer where required).

The following options are supported:

  --help, -?
    Print this usage text.

  --trace, -t
    Enable tracing of all data read. Specify twice to enable even more
    tracing (including reads during opening of the tablespace) which can
    be quite noisy.

  --system-space-file, -s <arg>
    Load the system tablespace file or files <arg>: Either a single file e.g.
    "ibdata1", a comma-delimited list of files e.g. "ibdata1,ibdata1", or a
    directory name. If a directory name is provided, it will be scanned for all
    files named "ibdata?" which will then be sorted alphabetically and used to
    load the system tablespace.

  --table-name, -T <name>
    Use the table name <name>.

  --index-name, -I <name>
    Use the index name <name>.

  --space-file, -f <file>
    Load the tablespace file <file>.

  --page, -p <page>
    Operate on the page <page>.

  --level, -l <level>
    Operate on the level <level>.

  --list, -L <list>
    Operate on the list <list>.

  --require, -r <file>
    Use Ruby's "require" to load the file <file>. This is useful for loading
    classes with record describers.

  --describer, -d <describer>
    Use the named record describer to parse records in index pages.

The following modes are supported:

  system-spaces
    Print a summary of all spaces in the system.

  data-dictionary-tables
    Print all records in the SYS_TABLES data dictionary table.

  data-dictionary-columns
    Print all records in the SYS_COLUMNS data dictionary table.

  data-dictionary-indexes
    Print all records in the SYS_INDEXES data dictionary table.

  data-dictionary-fields
    Print all records in the SYS_FIELDS data dictionary table.

  space-summary
    Summarize all pages within a tablespace. A starting page number can be
    provided with the --page/-p argument.

  space-index-pages-summary
    Summarize all "INDEX" pages within a tablespace. This is useful to analyze
    page fill rates and record counts per page. In addition to "INDEX" pages,
    "ALLOCATED" pages are also printed and assumed to be completely empty.
    A starting page number can be provided with the --page/-p argument.

  space-index-pages-free-plot
    Use Ruby's gnuplot module to produce a scatterplot of page free space for
    all "INDEX" and "ALLOCATED" pages in a tablespace. More aesthetically
    pleasing plots can be produced with space-index-pages-summary output,
    but this is a quick and easy way to produce a passable plot. A starting
    page number can be provided with the --page/-p argument.

  space-page-type-regions
    Summarize all contiguous regions of the same page type. This is useful to
    provide an overall view of the space and allocations within it. A starting
    page number can be provided with the --page/-p argument.

  space-page-type-summary
    Summarize all pages by type. A starting page number can be provided with
    the --page/-p argument.

  space-indexes
    Summarize all indexes (actually each segment of the indexes) to show
    the number of pages used and allocated, and the segment fill factor.

  space-lists
    Print a summary of all lists in a space.

  space-list-iterate
    Iterate through the contents of a space list.

  space-extents
    Iterate through all extents, printing the extent descriptor bitmap.

  space-extents-illustrate
    Iterate through all extents, illustrating the extent usage using ANSI
    color and Unicode box drawing characters to show page usage throughout
    the space.

  space-extents-illustrate-svg
    Iterate through all extents, illustrating the extent usage in SVG format
    printed to stdout to show page usage throughout the space.

  space-lsn-age-illustrate
    Iterate through all pages, producing a heat map colored by the page LSN
    using ANSI color and Unicode box drawing characters, allowing the user to
    get an overview of page modification recency.

  space-lsn-age-illustrate-svg
    Iterate through all pages, producing a heat map colored by the page LSN
    producing SVG format output, allowing the user to get an overview of page
    modification recency.

  space-inodes-summary
    Iterate through all inodes, printing a short summary of each FSEG.

  space-inodes-detail
    Iterate through all inodes, printing a detailed report of each FSEG.

  index-recurse
    Recurse an index, starting at the root (which must be provided in the first
    --page/-p argument), printing the node pages, node pointers (links), leaf
    pages. A record describer must be provided with the --describer/-d argument
    to recurse indexes (in order to parse node pages).

  index-record-offsets
    Recurse an index as index-recurse does, but print the offsets of each
    record within the page.

  index-digraph
    Recurse an index as index-recurse does, but print a dot-compatible digraph
    instead of a human-readable summary.

  index-level-summary
    Print a summary of all pages at a given level (provided with the --level/-l
    argument) in an index.

  index-fseg-internal-lists
  index-fseg-leaf-lists
    Print a summary of all lists in an index file segment. Index root page must
    be provided with --page/-p.

  index-fseg-internal-list-iterate
  index-fseg-leaf-list-iterate
    Iterate the file segment list (whose name is provided in the first --list/-L
    argument) for internal or leaf pages for a given index (whose root page
    is provided in the first --page/-p argument). The lists used for each
    index are "full", "not_full", and "free".

  index-fseg-internal-frag-pages
  index-fseg-leaf-frag-pages
    Print a summary of all fragment pages in an index file segment. Index root
    page must be provided with --page/-p.

  page-dump
    Dump the contents of a page, using the Ruby pp ("pretty-print") module.

  page-account
    Account for a page's usage in FSEGs.

  page-validate
    Validate the contents of a page.

  page-directory-summary
    Summarize the record contents of the page directory in a page. If a record
    describer is available, the key of each record will be printed.

  page-records
    Summarize all records within a page.

  page-illustrate
    Produce an illustration of the contents of a page.

  record-dump
    Dump a detailed description of a record and the data it contains. A record
    offset must be provided with -R/--record.

  record-history
    Summarize the history (undo logs) for a record. A record offset must be
    provided with -R/--record.

  undo-history-summary
    Summarize all records in the history list (undo logs).

  undo-record-dump
    Dump a detailed description of an undo record and the data it contains.
    A record offset must be provided with -R/--record.

[root@MySQL56_L1 data]# 

CREATE TABLE `t2` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(50) DEFAULT NULL,
  `remark` varchar(50) DEFAULT NULL,
  `add_time` datetime DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `ix_t2_name` (`name`)
) ENGINE=InnoDB AUTO_INCREMENT=3829 DEFAULT CHARSET=utf8

[root@MySQL56_L1 data]# innodb_space -s ibdata1 -T zeno3376/t2 space-indexes
id          name                            root        fseg        used        allocated   fill_factor
42          PRIMARY                         3           internal    1           1           100.00%     
42          PRIMARY                         3           leaf        9           9           100.00%     
43          ix_t2_name                      4           internal    1           1           100.00%     
43          ix_t2_name                      4           leaf        4           4           100.00%   

[root@MySQL56_L1 data]# innodb_space -s ibdata1 -T zeno3376/t2  space-page-type-regions
start       end         count       type               
0           0           1           FSP_HDR             
1           1           1           IBUF_BITMAP         
2           2           1           INODE               
3           17          15          INDEX               
18          18          1           FREE (ALLOCATED)   

# 解析表（聚集索引组织表，这里不需要加-I primary，否则会报错）
[root@MySQL56_L1 data]# innodb_space -s ibdata1 -T zeno3376/t2 -I primary -p 3 page-records           
/usr/local/lib/ruby/gems/1.9.1/gems/innodb_ruby-0.9.15/lib/innodb/system.rb:213:in `index_by_name': undefined method `[]' for nil:NilClass (NoMethodError)
        from /usr/local/lib/ruby/gems/1.9.1/gems/innodb_ruby-0.9.15/bin/innodb_space:1913:in `<top (required)>'
        from /usr/local/bin/innodb_space:23:in `load'
        from /usr/local/bin/innodb_space:23:in `<main>'

[root@MySQL56_L1 data]# innodb_space -s ibdata1 -T zeno3376/t2 -p 3 page-records           
Record 126: (id=1782) → #5
Record 140: (id=1890) → #6
Record 154: (id=2101) → #7
Record 168: (id=2317) → #10
Record 182: (id=2531) → #11
Record 196: (id=2747) → #12
Record 210: (id=2964) → #15
Record 224: (id=3179) → #16
Record 238: (id=3394) → #17

# -p 3 就是解析3号page的意思

[root@MySQL56_L1 data]# innodb_space -s ibdata1 -T zeno3376/t2 -p 5 page-records
Record 128: (id=1782) → (name="zeno", remark="mysql", add_time=:NULL)

Record 162: (id=1783) → (name="KIK91QJET1FCZ46EJKML", remark="H4HJO5F7W5GSSDORT8AAT", add_time="184524556-49-63 92:14:08")

Record 233: (id=1784) → (name="XQZJ08164WSB2EI9M3HCWCEZZOXNB6", remark="8878ASA5AW", add_time="184524556-50-65 04:03:84")

Record 303: (id=1785) → (name="XAXK7RVVTYWEXB2ZFB", remark="TVZNZPW150ZNNJAC1", add_time="184524556-50-65 16:99:20")

Record 368: (id=1786) → (name="G0BZFYV26V14", remark="CYYVCNQJVDQ4OLO6YBZ", add_time="184524556-50-65 63:27:68")

…… # 注：已截断部分数据

Record 7187: (id=1885) → (name="XQ2E35QOX32I5GL0TH", remark="SZ4QTI116S3ISRZOJL0M", add_time="184524556-52-49 52:32:00")

Record 7255: (id=1886) → (name="S127FSHO2IPIE2", remark="2EX67306JBI7AL9Z", add_time="184524556-52-49 72:18:56")

Record 7315: (id=1887) → (name="2XKN9VXB5561923IPKVMBW", remark="6ZBU7PRXNDUHR4DV2PB", add_time="184524556-52-49 19:62:88")

Record 7386: (id=1888) → (name="42R60NM6IMTNHRB1L", remark="UG3GLX6ONU5", add_time="184524556-52-49 45:81:76")

Record 7444: (id=1889) → (name="0O2S6OCUC99MQKM1", remark="1K5GJEQ5QU83T3F", add_time="184524556-52-49 32:71:04")

[root@MySQL56_L1 data]# innodb_space -s ibdata1 -T zeno3376/t2 -I ix_t2_name -p 4 page-records
Record 127: (name="01EE2CCYUW35K0LVT5DAG2044NW") → #8
Record 196: (name="8WCS36CV56KGA8NE6OG23QFS") → #13
Record 169: (name="HQVX6ZX7H2XI") → #9
Record 235: (name="QXS8RUJF6FY") → #14

[root@MySQL56_L1 data]# innodb_space -s ibdata1 -T zeno3376/t2 -I ix_t2_name -p 8 page-records
Record 127: (name="01EE2CCYUW35K0LVT5DAG2044NW") → (id=1855)

Record 165: (name="02RFY8SJLQ879F2CYHI") → (id=2132)

Record 10829: (name="04FNKNM16R7U27A3") → (id=3152)

Record 195: (name="06WM2Q51B0D8L76VM2") → (id=2184)

Record 224: (name="0739V9NMP4") → (id=1843)

……# 注：已截断部分信息

Record 8197: (name="8U4049BA2TAAY7A89SDG") → (id=2003)

Record 10591: (name="8UQOOOU7X5AYE75GU") → (id=3111)

Record 8228: (name="8V5C6OGK4NGAHE6") → (id=2247)

Record 12607: (name="8V6SFJ0P8E1XKIF005QD3NTCI") → (id=3435)

Record 9595: (name="8VK9HHEN3G") → (id=2972)