MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 02/01/01 through 02/28/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 45,367 1,678,533
INS90 16,217 144,832
INS85 13,684 69,705
INS80 12,754 51,683
INS69 13,035 63,513
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,816 56,955
2-4 a.m. 1,119 19,701
4-6 a.m. 646 8,647
6-8 a.m. 869 15,491
8-10 a.m. 5,236 101,811
10-12 a.m. 14,980 287,963
12-2 p.m. 15,954 298,465
2-4 p.m. 20,543 411,979
4-6 p.m. 18,526 426,668
6-8 p.m. 8,784 176,485
8-10 p.m. 6,655 106,449
10-12 p.m. 4,929 97,652
__________ _____________ _________________
Total: 101,057 2,008,266
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 254
Davis 149
Irvine 143
Los Angeles 396
Riverside 39
San Diego 245
San Francisco 90
Santa Barbara 191
Santa Cruz 29
Lawrence Berkeley 83
Lawrence Livermore 43
Los Alamos 0
MELWEB 80,665
Searchlight 18,501
Other - UC 71
Other-Network UC 158
_____
101,057
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,330
Davis 2,245
Irvine 2,628
Los Angeles 1,724
Riverside 107
San Diego 1,557
San Francisco 365
Santa Barbara 2,153
Santa Cruz 246
Lawrence Berkeley 1,116
Lawrence Livermore 355
Los Alamos 0
MELWEB 1,982,934
Searchlight 6,617
Other - UC 45
Other-Network UC 3,844
_____
2,008,266
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.4
Standard deviation in seconds 9.7
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.8
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 20:49
Average session length (minutes:seconds) 17:02
Longest session recorded (minutes:seconds) 185:43
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 428.8
Retrievals per search - standard deviation 5412.2
Percent of searches completed with 0 results 34.9%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 101,057 20.2%
PRESENT 344,714 68.7%
INIT or CLOSE 54,776 10.9%
OTHER 906 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 31,238 25.0% 9,780 31.3% 9 64.6 907.9
TITLE WORD 20,656 16.5% 8,235 39.9% 3 91.6 1573.2
EXACT TITLE 1,496 1.2% 810 54.1% 1 9.2 53.9
JOURNAL 5,191 4.2% 2,725 52.5% 7 1360.5 6816.1
EXACT JOURNAL 1,393 1.1% 644 46.2% 389 3187.3 8272.2
SUBJECT 4,793 3.8% 2,132 44.5% 10 339.4 1704.4
EXACT SUBJECT 926 0.7% 250 27.0% 8 357.2 1658.6
THESAURUS 18 0.0% 8 44.4% 17 1553.8 4839.8
EXACT THESAURUS 192 0.2% 21 10.9% 19 1193.3 3433.1
KEYWORD 47,364 37.9% 16,439 34.7% 18 1100.2 9379.6
SUBFILE 137 0.1% 54 39.4% 33 526.8 1572.4
FORM 1,087 0.9% 322 29.6% 19 325.7 2288.8
DATE 983 0.8% 349 35.5% 12 96.6 494.6
ADDED 282 0.2% 189 67.0% 3 86.0 732.0
ARTICLE 78 0.1% 17 21.8% 37 604.8 1518.7
AUTHOR AFFIL. 1,186 0.9% 548 46.2% 11 53.2 447.4
CONFERENCE 247 0.2% 108 43.7% 53 655.6 2781.5
LANGUAGE 3,351 2.7% 943 28.1% 22 748.6 4030.6
CHEMICAL NAME 575 0.5% 325 56.5% 7 63.9 210.6
ISSN 15 0.0% 13 86.7% 1,036 1035.5 798.3
ISBN 29 0.0% 24 82.8% 47 40.6 25.4
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
PRODUCT NUMBER 2 0.0% 2 100% 0 0.0 0.0
STANDARD NUMBER 14 0.0% 11 78.6% 1 1.0 0.0
ISN 1 0.0% 1 100% 0 0.0 0.0
AT 3,649 2.9% 1,238 33.9% 16 594.1 3414.2
Other indexes 36 0.0% 26 72.2% 32 165.8 237.7
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 19,929 19.7% 8,419 42.2% 6 274.7 2587.1
Single 81,128 80.3% 26,821 33.1% 14 739.7 7271.1
PRESENT commands, by type:
MARC 36.4%
OPAC 36.4%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)