Comment 6 for bug 1269547

It seems that this (LSN delta divided by bitmap size being small) is easy enough to reproduce. Start server with:

innodb_track_changed_pages=1
innodb_max_bitmap_file_size=32768

Then apply load like this:

create table tbig(id int primary key, c1 char(255)) engine=InnoDB;
insert into tbig values(1,'a');
insert into tbig select rand()*1000000000, 'a' from tbig;
...
insert into tbig select rand()*1000000000, 'a' from tbig;
flush changed_page_bitmaps;

and check *.xdb file sizes and LSN values:

openxs@ao756:~/dbs/p5.6$ ls -l data/*.xdb
-rw-rw---- 1 openxs openxs 147456 п╩я▌я┌ 3 19:28 data/ib_modified_log_1_0.xdb
-rw-rw---- 1 openxs openxs 32768 п╩я▌я┌ 3 19:32 data/ib_modified_log_2_12003768.xdb
-rw-rw---- 1 openxs openxs 40960 п╩я▌я┌ 3 19:33 data/ib_modified_log_3_12017366.xdb
-rw-rw---- 1 openxs openxs 45056 п╩я▌я┌ 3 19:35 data/ib_modified_log_4_13490670.xdb
...

and do calculations like this:

mysql> select (1349067-1201736)/40960;
+-------------------------+
| (1349067-1201736)/40960 |
+-------------------------+
| 3.5969 |
+-------------------------+
1 row in set (0,01 sec)

Note low values like the above.