MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 02/01/99 through 02/28/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 33,611 1,488,164
INS90 6,408 92,508
INS85 3,999 62,229
INS80 2,483 30,711
INS69 2,471 51,769
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,274 51,131
2-4 a.m. 532 22,220
4-6 a.m. 299 10,467
6-8 a.m. 435 14,012
8-10 a.m. 2,850 102,342
10-12 a.m. 7,066 251,732
12-2 p.m. 7,820 255,554
2-4 p.m. 9,608 330,460
4-6 p.m. 9,167 311,354
6-8 p.m. 4,776 170,626
8-10 p.m. 2,915 117,428
10-12 p.m. 2,230 88,055
__________ _____________ _________________
Total: 48,972 1,725,381
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 600
Davis 35
Irvine 133
Los Angeles 72
Riverside 5
San Diego 872
San Francisco 20
Santa Barbara 191
Santa Cruz 11
Lawrence Berkeley 289
Lawrence Livermore 91
Los Alamos 0
MELWEB 45,866
Other - UC 529
Other-Network UC 258
_____
48,972
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 6,851
Davis 259
Irvine 2,986
Los Angeles 605
Riverside 3,479
San Diego 1,719
San Francisco 59
Santa Barbara 1,241
Santa Cruz 1
Lawrence Berkeley 4,701
Lawrence Livermore 3,408
Los Alamos 0
MELWEB 1,693,366
Other - UC 1,411
Other-Network UC 5,295
_____
1,725,381
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.8
Standard deviation in seconds 8.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 23:17
Average session length (minutes:seconds) 24:49
Longest session recorded (minutes:seconds) 217:52
Average number of searches completed per session 0.0
Retrievals per search - median 5.0
Retrievals per search - average 501.6
Retrievals per search - standard deviation 7628.1
Percent of searches completed with 0 results 27.9%
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 48,972 12.1%
PRESENT 341,179 84.4%
INIT or CLOSE 13,485 3.3%
OTHER 501 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 20,991 32.3% 5,700 27.2% 10 82.0 701.0
TITLE WORD 9,781 15.0% 3,712 37.9% 4 99.5 653.3
EXACT TITLE 837 1.3% 413 49.3% 1 25.8 180.7
JOURNAL 3,005 4.6% 1,529 50.9% 8 1505.9 6553.3
EXACT JOURNAL 874 1.3% 421 48.2% 226 2477.6 6660.0
SUBJECT 2,598 4.0% 1,026 39.5% 11 384.6 2207.8
EXACT SUBJECT 827 1.3% 190 23.0% 7 502.4 1955.5
THESAURUS 55 0.1% 29 52.7% 77 324.3 561.4
EXACT THESAURUS 285 0.4% 51 17.9% 153 1675.6 3911.3
KEYWORD 16,066 24.7% 3,357 20.9% 30 1436.6 14653.1
SUBFILE 127 0.2% 34 26.8% 36 138.9 248.6
FORM 744 1.1% 180 24.2% 20 300.0 2392.4
DATE 836 1.3% 276 33.0% 11 130.4 446.6
ADDED 154 0.2% 110 71.4% 3 310.1 1411.8
ARTICLE 571 0.9% 92 16.1% 37 346.4 2224.0
AUTHOR AFFIL. 927 1.4% 414 44.7% 11 219.8 2094.8
CONFERENCE 216 0.3% 101 46.8% 39 354.4 825.6
LANGUAGE 2,538 3.9% 597 23.5% 33 996.5 7876.5
CHEMICAL NAME 388 0.6% 194 50.0% 8 109.4 456.3
ISSN 12 0.0% 3 25.0% 908 573.8 438.2
ISBN 5 0.0% 5 100% 0 0.0 0.0
ID NUMBER 1 0.0% 0 0.0% 1 1.0 0.0
PRODUCT NUMBER 3 0.0% 3 100% 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 3,170 4.9% 931 29.4% 21 711.6 3142.0
Other indexes 3 0.0% 3 100% 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 12,659 25.8% 4,553 36.0% 9 434.9 4194.9
Single 36,313 74.1% 9,098 25.1% 16 773.0 9963.2
PRESENT commands, by type:
MARC 35.6%
OPAC 36.3%