MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 09/01/00 through 09/30/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 36,766 1,305,976
INS90 13,290 132,557
INS85 11,010 65,397
INS80 10,192 40,199
INS69 10,544 60,434
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,948 28,739
2-4 a.m. 876 13,865
4-6 a.m. 537 10,056
6-8 a.m. 931 22,185
8-10 a.m. 4,697 87,944
10-12 a.m. 13,347 272,262
12-2 p.m. 12,939 245,160
2-4 p.m. 16,931 342,201
4-6 p.m. 14,675 313,498
6-8 p.m. 6,848 140,839
8-10 p.m. 4,527 71,109
10-12 p.m. 3,546 56,705
__________ _____________ _________________
Total: 81,802 1,604,563
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 234
Davis 90
Irvine 18
Los Angeles 97
Riverside 17
San Diego 694
San Francisco 122
Santa Barbara 282
Santa Cruz 1
Lawrence Berkeley 50
Lawrence Livermore 60
Los Alamos 0
MELWEB 68,155
Searchlight 11,685
Other - UC 56
Other-Network UC 241
_____
81,802
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,751
Davis 1,158
Irvine 493
Los Angeles 1,426
Riverside 118
San Diego 3,659
San Francisco 1,175
Santa Barbara 3,268
Santa Cruz 5
Lawrence Berkeley 416
Lawrence Livermore 1,176
Los Alamos 0
MELWEB 1,574,554
Searchlight 11,305
Other - UC 94
Other-Network UC 2,965
_____
1,604,563
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.2
Standard deviation in seconds 6.3
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) 21:12
Average session length (minutes:seconds) 18:33
Longest session recorded (minutes:seconds) 168:41
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 391.2
Retrievals per search - standard deviation 4277.4
Percent of searches completed with 0 results 33.7%
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 81,802 20.1%
PRESENT 283,304 69.5%
INIT or CLOSE 41,896 10.3%
OTHER 612 0.2%
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 31,014 30.2% 10,240 33.0% 9 68.9 846.4
TITLE WORD 17,462 17.0% 7,305 41.8% 3 72.8 652.2
EXACT TITLE 1,552 1.5% 916 59.0% 1 10.0 69.9
JOURNAL 4,448 4.3% 2,055 46.2% 6 985.5 6307.5
EXACT JOURNAL 1,021 1.0% 449 44.0% 177 2617.7 6860.4
SUBJECT 3,442 3.4% 1,488 43.2% 9 371.0 1891.6
EXACT SUBJECT 824 0.8% 277 33.6% 8 367.6 1526.4
THESAURUS 19 0.0% 15 78.9% 274 283.3 286.7
EXACT THESAURUS 230 0.2% 25 10.9% 12 391.1 1163.9
KEYWORD 33,424 32.5% 10,442 31.2% 18 1102.5 7630.1
SUBFILE 114 0.1% 25 21.9% 14 116.6 243.9
FORM 764 0.7% 204 26.7% 22 223.4 1774.3
DATE 836 0.8% 199 23.8% 11 139.2 654.5
ADDED 630 0.6% 449 71.3% 3 15.8 38.1
ARTICLE 62 0.1% 16 25.8% 26 174.0 386.9
AUTHOR AFFIL. 1,180 1.1% 559 47.4% 8 131.7 1261.1
CONFERENCE 194 0.2% 79 40.7% 25 284.8 1041.1
LANGUAGE 2,169 2.1% 554 25.5% 21 384.3 1859.0
CHEMICAL NAME 366 0.4% 211 57.6% 6 80.9 203.5
ISSN 19 0.0% 11 57.9% 13 22.1 23.2
ISBN 23 0.0% 12 52.2% 93 89.5 66.2
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
PRODUCT NUMBER 11 0.0% 9 81.8% 404 404.0 0.0
STANDARD NUMBER 15 0.0% 14 93.3% 1 1.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,906 2.8% 987 34.0% 16 510.4 2774.8
Other indexes 8 0.0% 6 75.0% 278 277.5 191.6
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 18,161 22.2% 7,957 43.8% 5 180.3 1742.5
Single 63,641 77.8% 19,579 30.8% 13 684.6 5750.9
PRESENT commands, by type:
MARC 37.1%
OPAC 34.7%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)