MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 06/01/02 through 06/30/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 33,504 1,268,625
INS90 10,637 84,304
INS85 9,135 47,179
INS80 8,472 29,320
INS69 8,701 44,172
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,249 45,622
2-4 a.m. 921 16,207
4-6 a.m. 367 6,463
6-8 a.m. 762 24,569
8-10 a.m. 3,867 75,583
10-12 a.m. 11,068 228,336
12-2 p.m. 11,176 228,639
2-4 p.m. 15,128 321,133
4-6 p.m. 13,240 267,945
6-8 p.m. 5,274 113,773
8-10 p.m. 3,045 71,891
10-12 p.m. 3,352 73,439
__________ _____________ _________________
Total: 70,449 1,473,600
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 186
Davis 371
Irvine 319
Los Angeles 151
Riverside 40
San Diego 130
San Francisco 39
Santa Barbara 136
Santa Cruz 36
Lawrence Berkeley 132
Lawrence Livermore 74
Los Alamos 0
MELWEB 61,430
Searchlight 7,233
Other - UC 108
Other-Network UC 64
_____
70,449
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,173
Davis 6,784
Irvine 1,605
Los Angeles 2,279
Riverside 167
San Diego 2,079
San Francisco 124
Santa Barbara 1,555
Santa Cruz 85
Lawrence Berkeley 2,280
Lawrence Livermore 1,186
Los Alamos 0
MELWEB 1,443,824
Searchlight 7,947
Other - UC 700
Other-Network UC 812
_____
1,473,600
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.5
Standard deviation in seconds 7.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:42
Average session length (minutes:seconds) 20:40
Longest session recorded (minutes:seconds) 169:45
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 341.6
Retrievals per search - standard deviation 4859.7
Percent of searches completed with 0 results 32.5%
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 70,449 19.1%
PRESENT 262,277 71.2%
INIT or CLOSE 34,970 9.5%
OTHER 618 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 23,692 27.4% 6,985 29.5% 9 88.5 1166.1
TITLE WORD 16,729 19.3% 6,847 40.9% 3 122.5 2849.3
EXACT TITLE 707 0.8% 317 44.8% 1 15.8 160.0
JOURNAL 3,278 3.8% 1,506 45.9% 6 1392.7 8068.8
EXACT JOURNAL 784 0.9% 302 38.5% 460 4494.7 12898.0
SUBJECT 3,070 3.5% 1,453 47.3% 6 168.2 1043.0
EXACT SUBJECT 588 0.7% 196 33.3% 7 303.9 1543.4
THESAURUS 9 0.0% 9 100% 0 0.0 0.0
EXACT THESAURUS 101 0.1% 32 31.7% 76 2548.0 6568.1
KEYWORD 31,021 35.9% 9,299 30.0% 14 776.9 8074.8
SUBFILE 61 0.1% 15 24.6% 22 138.7 363.3
FORM 851 1.0% 272 32.0% 27 348.9 1627.4
DATE 593 0.7% 128 21.6% 9 86.9 329.9
ADDED 378 0.4% 256 67.7% 4 9.1 14.7
ARTICLE 37 0.0% 9 24.3% 102 1742.1 6456.6
AUTHOR AFFIL. 717 0.8% 266 37.1% 10 82.5 798.7
CONFERENCE 75 0.1% 35 46.7% 66 214.6 450.8
LANGUAGE 1,914 2.2% 536 28.0% 16 398.7 2269.9
CHEMICAL NAME 380 0.4% 212 55.8% 6 68.8 313.6
ISSN 2 0.0% 1 50.0% 69,759 69759.0 0.0
ISBN 5 0.0% 4 80.0% 91 91.0 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 1,494 1.7% 408 27.3% 14 455.6 4941.8
Other indexes 15 0.0% 14 93.3% 3 3.0 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 13,909 19.7% 5,347 38.4% 5 211.7 3632.5
Single 56,540 80.3% 17,548 31.0% 12 570.7 6296.6
PRESENT commands, by type:
MARC 37.1%
OPAC 36.8%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)