MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 03/01/02 through 03/31/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 44,190 1,500,234
INS90 15,077 109,972
INS85 12,886 65,780
INS80 12,033 40,345
INS69 12,431 69,132
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,571 55,936
2-4 a.m. 1,095 22,991
4-6 a.m. 591 18,218
6-8 a.m. 1,047 29,715
8-10 a.m. 5,915 115,572
10-12 a.m. 14,324 282,713
12-2 p.m. 14,876 270,396
2-4 p.m. 20,057 365,718
4-6 p.m. 16,973 300,362
6-8 p.m. 8,850 156,295
8-10 p.m. 5,642 88,596
10-12 p.m. 4,676 78,951
__________ _____________ _________________
Total: 96,617 1,785,463
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 337
Davis 235
Irvine 51
Los Angeles 350
Riverside 2
San Diego 132
San Francisco 16
Santa Barbara 288
Santa Cruz 24
Lawrence Berkeley 176
Lawrence Livermore 119
Los Alamos 0
MELWEB 80,373
Searchlight 13,304
Other - UC 893
Other-Network UC 317
_____
96,617
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,188
Davis 1,739
Irvine 1,932
Los Angeles 3,541
Riverside 38
San Diego 1,579
San Francisco 67
Santa Barbara 2,399
Santa Cruz 669
Lawrence Berkeley 2,066
Lawrence Livermore 3,350
Los Alamos 0
MELWEB 1,747,954
Searchlight 7,944
Other - UC 1,457
Other-Network UC 7,540
_____
1,785,463
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.3
Standard deviation in seconds 8.2
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:12
Average session length (minutes:seconds) 18:35
Longest session recorded (minutes:seconds) 239:25
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 462.7
Retrievals per search - standard deviation 7250.2
Percent of searches completed with 0 results 34.6%
Percent of searches entered that are long 0.8%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 96,617 20.6%
PRESENT 322,067 68.5%
INIT or CLOSE 50,807 10.8%
OTHER 513 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 31,565 26.7% 9,741 30.9% 9 62.8 586.7
TITLE WORD 22,006 18.6% 9,656 43.9% 3 91.2 1748.5
EXACT TITLE 1,143 1.0% 582 50.9% 1 13.4 109.7
JOURNAL 4,393 3.7% 2,204 50.2% 8 2402.9 15176.8
EXACT JOURNAL 1,249 1.1% 450 36.0% 295 3998.9 11155.3
SUBJECT 3,495 3.0% 1,528 43.7% 11 366.7 1984.0
EXACT SUBJECT 685 0.6% 182 26.6% 8 269.2 1738.8
THESAURUS 39 0.0% 16 41.0% 65 1027.1 3045.1
EXACT THESAURUS 210 0.2% 23 11.0% 17 706.3 2877.5
KEYWORD 43,563 36.8% 14,541 33.4% 17 1122.6 12253.2
SUBFILE 127 0.1% 34 26.8% 37 323.3 781.3
FORM 1,346 1.1% 330 24.5% 18 203.3 755.3
DATE 842 0.7% 173 20.5% 10 136.8 699.9
ADDED 396 0.3% 228 57.6% 3 8.2 12.9
ARTICLE 65 0.1% 17 26.2% 24 531.7 1087.0
AUTHOR AFFIL. 1,014 0.9% 461 45.5% 11 511.5 5084.9
CONFERENCE 257 0.2% 133 51.8% 11 1237.2 8039.8
LANGUAGE 2,962 2.5% 776 26.2% 22 486.1 2360.5
CHEMICAL NAME 438 0.4% 236 53.9% 13 65.9 197.1
ISSN 12 0.0% 6 50.0% 66 638.3 1404.7
ISBN 5 0.0% 4 80.0% 106 106.0 0.0
ID NUMBER 4 0.0% 0 0.0% 1 1.0 0.0
PRODUCT NUMBER 1 0.0% 1 100% 0 0.0 0.0
STANDARD NUMBER 6 0.0% 5 83.3% 1 1.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,459 2.1% 781 31.8% 15 491.1 3781.3
Other indexes 23 0.0% 17 73.9% 127 141.5 169.4
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 18,404 19.0% 7,574 41.2% 5 193.4 1884.6
Single 78,213 80.9% 25,845 33.0% 13 813.7 9796.6
PRESENT commands, by type:
MARC 38.1%
OPAC 33.5%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)