MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 06/01/01 through 06/30/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 40,149 1,519,448
INS90 14,795 128,881
INS85 12,618 63,223
INS80 11,692 38,792
INS69 12,105 63,373
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,368 45,256
2-4 a.m. 886 23,898
4-6 a.m. 524 20,699
6-8 a.m. 842 23,891
8-10 a.m. 5,350 107,908
10-12 a.m. 15,990 286,228
12-2 p.m. 14,660 301,102
2-4 p.m. 19,565 387,517
4-6 p.m. 15,733 323,413
6-8 p.m. 7,078 139,768
8-10 p.m. 4,702 82,640
10-12 p.m. 3,661 71,397
__________ _____________ _________________
Total: 91,359 1,813,717
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 120
Davis 132
Irvine 142
Los Angeles 477
Riverside 21
San Diego 237
San Francisco 74
Santa Barbara 296
Santa Cruz 90
Lawrence Berkeley 69
Lawrence Livermore 28
Los Alamos 0
MELWEB 47,361
Searchlight 12,605
Other - UC 29,407
Other-Network UC 300
_____
91,359
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 950
Davis 517
Irvine 4,702
Los Angeles 7,530
Riverside 82
San Diego 2,487
San Francisco 1,104
Santa Barbara 2,669
Santa Cruz 1,096
Lawrence Berkeley 1,063
Lawrence Livermore 15,720
Los Alamos 0
MELWEB 1,055,187
Searchlight 3,201
Other - UC 711,520
Other-Network UC 5,889
_____
1,813,717
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 8.5
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) 21:16
Average session length (minutes:seconds) 18:42
Longest session recorded (minutes:seconds) 181:42
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 309.8
Retrievals per search - standard deviation 3383.2
Percent of searches completed with 0 results 35.4%
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 91,359 19.2%
PRESENT 335,441 70.6%
INIT or CLOSE 47,037 9.9%
OTHER 1,150 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 28,097 25.2% 8,655 30.8% 9 70.9 1452.7
TITLE WORD 20,539 18.4% 9,127 44.4% 3 92.6 1203.0
EXACT TITLE 1,313 1.2% 702 53.5% 1 19.2 118.5
JOURNAL 3,886 3.5% 1,993 51.3% 7 1496.9 8077.5
EXACT JOURNAL 958 0.9% 359 37.5% 584 4665.3 10593.6
SUBJECT 3,929 3.5% 1,783 45.4% 11 331.9 3559.0
EXACT SUBJECT 741 0.7% 216 29.1% 9 465.0 2077.0
THESAURUS 27 0.0% 20 74.1% 28 13905.4 36568.0
EXACT THESAURUS 140 0.1% 21 15.0% 95 863.2 1959.8
KEYWORD 41,782 37.4% 14,116 33.8% 15 705.5 5323.7
SUBFILE 66 0.1% 16 24.2% 201 2029.4 2991.5
FORM 1,338 1.2% 513 38.3% 20 324.8 1191.8
DATE 899 0.8% 233 25.9% 11 121.6 603.7
ADDED 322 0.3% 226 70.2% 2 9.8 15.1
ARTICLE 89 0.1% 23 25.8% 45 314.3 663.6
AUTHOR AFFIL. 928 0.8% 477 51.4% 10 47.0 422.2
CONFERENCE 241 0.2% 156 64.7% 137 911.6 3221.5
LANGUAGE 2,590 2.3% 762 29.4% 29 655.8 3966.0
CHEMICAL NAME 451 0.4% 266 59.0% 7 227.6 971.8
ISSN 7 0.0% 6 85.7% 35 35.0 0.0
ISBN 19 0.0% 18 94.7% 17 17.0 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 40 0.0% 31 77.5% 1 1.2 0.4
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,266 2.9% 1,209 37.0% 15 557.4 2934.2
Other indexes 21 0.0% 19 90.5% 14 13.5 12.0
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 16,777 18.4% 7,070 42.1% 6 276.8 3074.5
Single 74,582 81.6% 25,241 33.8% 12 519.2 4384.9
PRESENT commands, by type:
MARC 39.6%
OPAC 34.2%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)