MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 04/01/00 through 04/30/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 42,425 1,766,124
INS90 11,952 144,493
INS85 9,063 74,571
INS80 7,942 51,811
INS69 8,209 62,421
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,413 48,973
2-4 a.m. 1,045 24,406
4-6 a.m. 260 9,068
6-8 a.m. 771 18,344
8-10 a.m. 4,375 118,351
10-12 a.m. 11,904 307,801
12-2 p.m. 12,051 317,787
2-4 p.m. 16,006 421,857
4-6 p.m. 14,513 401,915
6-8 p.m. 7,584 211,112
8-10 p.m. 4,662 128,012
10-12 p.m. 4,007 91,794
__________ _____________ _________________
Total: 79,591 2,099,420
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 368
Davis 120
Irvine 15
Los Angeles 225
Riverside 4
San Diego 718
San Francisco 31
Santa Barbara 167
Santa Cruz 11
Lawrence Berkeley 78
Lawrence Livermore 93
Los Alamos 0
MELWEB 75,808
Searchlight 1,725
Other - UC 77
Other-Network UC 151
_____
79,591
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 33,499
Davis 2,347
Irvine 848
Los Angeles 3,630
Riverside 1
San Diego 501
San Francisco 163
Santa Barbara 5,035
Santa Cruz 103
Lawrence Berkeley 1,104
Lawrence Livermore 1,388
Los Alamos 0
MELWEB 2,029,984
Searchlight 16,348
Other - UC 0
Other-Network UC 4,469
_____
2,099,420
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.2
Standard deviation in seconds 11.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:17
Average session length (minutes:seconds) 23:11
Longest session recorded (minutes:seconds) 187:58
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 379.2
Retrievals per search - standard deviation 4677.8
Percent of searches completed with 0 results 28.9%
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 79,591 16.5%
PRESENT 363,939 75.7%
INIT or CLOSE 35,777 7.4%
OTHER 1,716 0.4%
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 29,758 28.6% 8,455 28.4% 9 62.0 524.7
TITLE WORD 18,763 18.0% 7,110 37.9% 4 69.5 495.7
EXACT TITLE 1,048 1.0% 481 45.9% 1 3.7 16.1
JOURNAL 5,336 5.1% 2,505 46.9% 7 1053.6 7505.8
EXACT JOURNAL 1,548 1.5% 616 39.8% 239 2810.1 7369.5
SUBJECT 4,256 4.1% 1,645 38.6% 12 274.1 1314.9
EXACT SUBJECT 814 0.8% 157 19.3% 8 341.9 1580.2
THESAURUS 87 0.1% 49 56.3% 37 273.1 556.2
EXACT THESAURUS 241 0.2% 26 10.8% 75 799.0 2718.9
KEYWORD 28,895 27.8% 6,779 23.5% 21 958.0 8104.4
SUBFILE 213 0.2% 53 24.9% 33 158.4 450.1
FORM 1,106 1.1% 268 24.2% 23 216.3 845.3
DATE 892 0.9% 265 29.7% 14 118.6 449.8
ADDED 1,174 1.1% 771 65.7% 4 9.5 15.3
ARTICLE 136 0.1% 29 21.3% 73 542.2 1873.8
AUTHOR AFFIL. 1,140 1.1% 525 46.1% 10 94.8 663.3
CONFERENCE 264 0.3% 91 34.5% 67 1942.5 15630.3
LANGUAGE 3,589 3.4% 857 23.9% 32 719.2 5791.2
CHEMICAL NAME 420 0.4% 216 51.4% 11 490.2 3465.9
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 2 0.0% 2 100% 0 0.0 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 4,401 4.2% 1,207 27.4% 20 587.8 4614.2
Other indexes 7 0.0% 4 57.1% 4 81.7 136.3
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 19,517 24.5% 7,290 37.4% 7 281.5 3424.0
Single 60,074 75.5% 15,725 26.2% 14 603.0 5992.6
PRESENT commands, by type:
MARC 37.5%
OPAC 37.0%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)