MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 07/01/01 through 07/31/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 38,657 1,469,958
INS90 13,189 113,345
INS85 10,975 56,825
INS80 10,086 35,863
INS69 10,440 57,320
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,891 36,000
2-4 a.m. 737 23,425
4-6 a.m. 448 18,989
6-8 a.m. 979 21,867
8-10 a.m. 5,207 106,213
10-12 a.m. 14,318 285,398
12-2 p.m. 13,607 262,533
2-4 p.m. 18,535 405,564
4-6 p.m. 14,926 313,858
6-8 p.m. 6,230 130,670
8-10 p.m. 3,374 64,187
10-12 p.m. 3,095 64,607
__________ _____________ _________________
Total: 83,347 1,733,311
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 277
Davis 204
Irvine 130
Los Angeles 220
Riverside 48
San Diego 228
San Francisco 120
Santa Barbara 289
Santa Cruz 5
Lawrence Berkeley 142
Lawrence Livermore 35
Los Alamos 0
MELWEB 126
Searchlight 9,310
Other - UC 71,897
Other-Network UC 316
_____
83,347
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,076
Davis 1,678
Irvine 2,325
Los Angeles 1,236
Riverside 562
San Diego 1,913
San Francisco 418
Santa Barbara 2,206
Santa Cruz 16
Lawrence Berkeley 9,870
Lawrence Livermore 14,903
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 1,692,942
Other-Network UC 3,166
_____
1,733,311
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.4
Standard deviation in seconds 7.2
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:26
Average session length (minutes:seconds) 19:50
Longest session recorded (minutes:seconds) 246:52
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 368.1
Retrievals per search - standard deviation 4186.1
Percent of searches completed with 0 results 32.6%
Percent of searches entered that are long 0.7%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 83,347 18.5%
PRESENT 322,978 71.7%
INIT or CLOSE 43,553 9.7%
OTHER 635 0.1%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 29,570 28.8% 9,054 30.6% 9 62.5 528.2
TITLE WORD 17,874 17.4% 7,198 40.3% 4 79.7 851.7
EXACT TITLE 1,332 1.3% 712 53.5% 1 24.4 262.7
JOURNAL 4,359 4.3% 1,948 44.7% 7 1550.0 8446.4
EXACT JOURNAL 1,103 1.1% 467 42.3% 344 3775.1 9515.8
SUBJECT 3,241 3.2% 1,422 43.9% 9 205.2 879.0
EXACT SUBJECT 557 0.5% 146 26.2% 7 451.3 1926.6
THESAURUS 66 0.1% 46 69.7% 73 224.8 694.7
EXACT THESAURUS 124 0.1% 20 16.1% 21 1410.7 3787.7
KEYWORD 35,752 34.9% 11,107 31.1% 18 882.3 6916.8
SUBFILE 114 0.1% 27 23.7% 29 325.6 1042.0
FORM 858 0.8% 228 26.6% 17 185.9 627.7
DATE 861 0.8% 195 22.6% 9 138.0 822.8
ADDED 303 0.3% 176 58.1% 5 18.0 44.6
ARTICLE 44 0.0% 14 31.8% 69 348.2 606.7
AUTHOR AFFIL. 905 0.9% 406 44.9% 12 296.7 5241.9
CONFERENCE 190 0.2% 96 50.5% 32 378.9 1170.7
LANGUAGE 2,425 2.4% 676 27.9% 21 507.3 6589.3
CHEMICAL NAME 472 0.5% 234 49.6% 8 59.8 234.5
ISSN 3 0.0% 2 66.7% 97 97.0 0.0
ISBN 11 0.0% 10 90.9% 134 134.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
STANDARD NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,352 2.3% 817 34.7% 16 615.8 4464.2
Other indexes 22 0.0% 18 81.8% 646 728.0 844.4
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 16,102 19.3% 6,629 41.2% 6 216.5 3410.3
Single 67,245 80.7% 20,532 30.5% 13 612.9 5363.2
PRESENT commands, by type:
MARC 40.0%
OPAC 33.5%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)