MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 12/30/00 through 01/05/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 5,698 251,471
INS90 1,929 22,850
INS85 1,536 12,541
INS80 1,444 6,676
INS69 1,536 11,682
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 282 4,520
2-4 a.m. 168 2,103
4-6 a.m. 31 1,143
6-8 a.m. 102 1,933
8-10 a.m. 648 17,030
10-12 a.m. 2,094 59,816
12-2 p.m. 2,310 55,765
2-4 p.m. 2,652 67,699
4-6 p.m. 2,112 52,663
6-8 p.m. 848 22,997
8-10 p.m. 459 13,007
10-12 p.m. 437 6,544
__________ _____________ _________________
Total: 12,143 305,220
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 81
Davis 29
Irvine 11
Los Angeles 73
Riverside 0
San Diego 60
San Francisco 9
Santa Barbara 12
Santa Cruz 3
Lawrence Berkeley 20
Lawrence Livermore 20
Los Alamos 0
MELWEB 10,221
Searchlight 1,575
Other - UC 10
Other-Network UC 19
_____
12,143
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 759
Davis 365
Irvine 417
Los Angeles 2,718
Riverside 0
San Diego 52
San Francisco 30
Santa Barbara 255
Santa Cruz 104
Lawrence Berkeley 205
Lawrence Livermore 349
Los Alamos 0
MELWEB 299,761
Searchlight 0
Other - UC 104
Other-Network UC 101
_____
305,220
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.1
Standard deviation in seconds 4.5
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:11
Average session length (minutes:seconds) 19:07
Longest session recorded (minutes:seconds) 145:43
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 313.9
Retrievals per search - standard deviation 3219.8
Percent of searches completed with 0 results 30.0%
Percent of searches entered that are long 0.5%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 12,143 17.1%
PRESENT 53,044 74.5%
INIT or CLOSE 5,841 8.2%
OTHER 132 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 4,480 29.5% 1,247 27.8% 10 94.3 1699.5
TITLE WORD 2,162 14.2% 748 34.6% 4 195.2 3989.6
EXACT TITLE 202 1.3% 114 56.4% 1 8.7 70.3
JOURNAL 600 3.9% 264 44.0% 7 1708.3 8340.9
EXACT JOURNAL 212 1.4% 93 43.9% 209 3709.3 9341.7
SUBJECT 435 2.9% 211 48.5% 8 586.0 3532.6
EXACT SUBJECT 170 1.1% 89 52.4% 4 538.4 1972.3
THESAURUS 6 0.0% 6 100% 0 0.0 0.0
EXACT THESAURUS 21 0.1% 1 4.8% 63 301.6 647.2
KEYWORD 5,273 34.7% 1,492 28.3% 16 553.1 4047.6
SUBFILE 16 0.1% 3 18.8% 12 12.4 8.9
FORM 178 1.2% 92 51.7% 13 79.1 160.4
DATE 239 1.6% 97 40.6% 14 608.5 3474.9
ADDED 57 0.4% 57 100% 0 0.0 0.0
ARTICLE 1 0.0% 1 100% 0 0.0 0.0
AUTHOR AFFIL. 108 0.7% 53 49.1% 12 25.8 54.9
CONFERENCE 47 0.3% 23 48.9% 248 2039.0 7785.2
LANGUAGE 484 3.2% 119 24.6% 17 241.8 1169.2
CHEMICAL NAME 76 0.5% 42 55.3% 8 36.8 65.7
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 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 421 2.8% 86 20.4% 14 257.4 1163.1
Other indexes 3 0.0% 0 0.0% 4 3.3 1.2
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 2,560 21.1% 985 38.5% 6 215.6 2693.4
Single 9,583 78.9% 2,663 27.8% 15 501.8 4056.2
PRESENT commands, by type:
MARC 36.5%
OPAC 36.7%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)