MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 08/18/01 through 08/24/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 8,450 333,453
INS90 2,809 25,475
INS85 2,248 10,318
INS80 2,074 8,227
INS69 2,122 13,841
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 251 5,696
2-4 a.m. 167 8,154
4-6 a.m. 65 3,601
6-8 a.m. 115 5,089
8-10 a.m. 969 21,802
10-12 a.m. 3,042 52,349
12-2 p.m. 2,853 54,892
2-4 p.m. 4,282 91,232
4-6 p.m. 3,450 86,128
6-8 p.m. 1,203 37,123
8-10 p.m. 760 13,169
10-12 p.m. 546 12,079
__________ _____________ _________________
Total: 17,703 391,314
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 83
Davis 43
Irvine 58
Los Angeles 226
Riverside 2
San Diego 95
San Francisco 12
Santa Barbara 46
Santa Cruz 50
Lawrence Berkeley 14
Lawrence Livermore 20
Los Alamos 0
MELWEB 45
Searchlight 1,600
Other - UC 15,390
Other-Network UC 19
_____
17,703
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 464
Davis 94
Irvine 1,028
Los Angeles 852
Riverside 33
San Diego 965
San Francisco 26
Santa Barbara 522
Santa Cruz 561
Lawrence Berkeley 94
Lawrence Livermore 3,007
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 383,608
Other-Network UC 60
_____
391,314
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 5.7
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) 21:33
Average session length (minutes:seconds) 20:22
Longest session recorded (minutes:seconds) 213:19
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 446.0
Retrievals per search - standard deviation 6352.2
Percent of searches completed with 0 results 31.8%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 17,703 18.1%
PRESENT 71,064 72.6%
INIT or CLOSE 9,043 9.2%
OTHER 87 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 6,722 30.7% 1,926 28.6% 9 67.9 537.1
TITLE WORD 3,806 17.4% 1,574 41.4% 3 121.0 3544.8
EXACT TITLE 221 1.0% 132 59.7% 1 31.8 206.3
JOURNAL 791 3.6% 366 46.3% 7 2418.7 17476.6
EXACT JOURNAL 235 1.1% 101 43.0% 165 2803.3 9035.0
SUBJECT 710 3.2% 303 42.7% 9 148.8 545.1
EXACT SUBJECT 100 0.5% 45 45.0% 6 163.1 723.0
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 11 0.1% 0 0.0% 6 221.5 463.0
KEYWORD 7,296 33.4% 2,237 30.7% 15 1151.1 10308.7
SUBFILE 17 0.1% 2 11.8% 20 34.8 57.1
FORM 242 1.1% 73 30.2% 15 48.3 88.1
DATE 277 1.3% 162 58.5% 7 33.9 88.2
ADDED 78 0.4% 42 53.8% 5 18.1 30.2
ARTICLE 20 0.1% 2 10.0% 13 23.3 29.4
AUTHOR AFFIL. 200 0.9% 84 42.0% 11 132.4 726.9
CONFERENCE 41 0.2% 20 48.8% 19 92.0 203.8
LANGUAGE 458 2.1% 124 27.1% 22 503.6 3299.4
CHEMICAL NAME 116 0.5% 64 55.2% 6 15.3 20.1
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 5 0.0% 4 80.0% 14 14.0 0.0
ID NUMBER 1 0.0% 0 0.0% 1 1.0 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 509 2.3% 178 35.0% 10 263.4 1274.0
Other indexes 6 0.0% 6 100% 0 0.0 0.0
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 3,405 19.2% 1,461 42.9% 6 141.0 1475.4
Single 14,298 80.8% 4,169 29.2% 12 752.4 8359.8
PRESENT commands, by type:
MARC 37.3%
OPAC 38.6%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)