--- /dev/null
+Here is a quick overview how cacheing of formats saved a day. Here are
+outputs of make profile.
+
+Before cacheing:
+
+Total Elapsed Time = 130.4098 Seconds
+ User+System Time = 126.7298 Seconds
+Exclusive Times
+%Time ExclSec CumulS #Calls sec/call Csec/c Name
+ 54.6 69.30 167.83 13875 0.0050 0.0121 main::data2xml
+ 30.4 38.60 69.833 743146 0.0001 0.0001 main::parse_iso_format
+ 14.3 18.15 22.102 201297 0.0000 0.0000 main::isis_sf
+ 10.6 13.50 13.502 200394 0.0000 0.0000 Text::Iconv::convert
+ 4.64 5.882 9.130 201297 0.0000 0.0000 main::cnv_cp
+ 3.32 4.208 4.208 130848 0.0000 0.0000 main::xmlify
+ 3.18 4.032 13.813 155421 0.0000 0.0000 main::x
+ 3.12 3.949 3.949 475311 0.0000 0.0000 OpenIsis::subfields
+ 3.08 3.906 3.906 116974 0.0000 0.0000 Text::Unaccent::unac_string
+ 3.02 3.827 73.660 743146 0.0000 0.0001 main::parse_format
+ 2.42 3.070 3.070 24922 0.0001 0.0001 DBI::st::execute
+ 1.53 1.933 3.142 104893 0.0000 0.0000 main::mkformat
+ 0.92 1.172 1.172 13875 0.0001 0.0001 OpenIsis::read
+ 0.59 0.752 0.752 28993 0.0000 0.0000 index_DBI::insert
+ 0.33 0.420 3.540 1 0.4201 3.5396 index_DBI::close
+
+After format cache implementation: (filters also load only once)
+
+Total Elapsed Time = 69.53874 Seconds
+ User+System Time = 68.58874 Seconds
+Exclusive Times
+%Time ExclSec CumulS #Calls sec/call Csec/c Name
+ 65.3 44.84 90.453 13875 0.0032 0.0065 main::data2xml
+ 24.2 16.65 28.905 391769 0.0000 0.0001 main::parse_iso_format
+ 13.8 9.479 9.479 151026 0.0000 0.0000 Text::Iconv::convert
+ 10.9 7.540 9.619 109406 0.0000 0.0000 main::isis_sf
+ 5.04 3.454 11.252 131626 0.0000 0.0000 main::x
+ 3.37 2.313 31.218 391769 0.0000 0.0001 main::parse_format
+ 3.28 2.249 2.249 55675 0.0000 0.0000 main::xmlify
+ 3.03 2.079 2.079 280696 0.0000 0.0000 OpenIsis::subfields
+ 2.39 1.642 1.642 13875 0.0001 0.0001 OpenIsis::read
+ 1.86 1.279 2.629 180129 0.0000 0.0000 main::cnv_cp
+ 0.47 0.324 0.324 2757 0.0001 0.0001 DBI::st::execute
+ 0.40 0.276 0.276 41801 0.0000 0.0000 main::unac_string
+ 0.34 0.232 0.573 43784 0.0000 0.0000 main::mkformat
+ 0.22 0.150 0.387 23 0.0065 0.0168 main::BEGIN
+ 0.21 0.142 0.142 13875 0.0000 0.0000 main::progress