MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 01/01/01 through 01/31/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 36,571 1,450,250
INS90 12,425 106,893
INS85 10,341 54,210
INS80 9,700 33,567
INS69 9,784 52,734
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,456 36,358
2-4 a.m. 869 15,888
4-6 a.m. 277 7,245
6-8 a.m. 619 9,861
8-10 a.m. 4,089 93,194
10-12 a.m. 11,866 261,259
12-2 p.m. 13,308 269,268
2-4 p.m. 16,683 370,296
4-6 p.m. 14,180 317,865
6-8 p.m. 7,095 143,071
8-10 p.m. 4,320 89,557
10-12 p.m. 4,059 83,792
__________ _____________ _________________
Total: 78,821 1,697,654
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 314
Davis 104
Irvine 40
Los Angeles 447
Riverside 7
San Diego 258
San Francisco 174
Santa Barbara 81
Santa Cruz 35
Lawrence Berkeley 116
Lawrence Livermore 102
Los Alamos 0
MELWEB 63,399
Searchlight 13,483
Other - UC 41
Other-Network UC 220
_____
78,821
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,241
Davis 994
Irvine 1,557
Los Angeles 5,788
Riverside 19
San Diego 929
San Francisco 1,110
Santa Barbara 1,784
Santa Cruz 475
Lawrence Berkeley 1,697
Lawrence Livermore 1,193
Los Alamos 0
MELWEB 1,663,907
Searchlight 8,553
Other - UC 249
Other-Network UC 5,158
_____
1,697,654
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.2
Standard deviation in seconds 6.6
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) 20:54
Average session length (minutes:seconds) 17:28
Longest session recorded (minutes:seconds) 256:20
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 384.5
Retrievals per search - standard deviation 4187.5
Percent of searches completed with 0 results 33.5%
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 78,821 18.9%
PRESENT 295,450 70.8%
INIT or CLOSE 42,088 10.1%
OTHER 793 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 25,956 26.5% 7,892 30.4% 9 66.4 799.9
TITLE WORD 15,353 15.7% 6,107 39.8% 4 97.4 1641.3
EXACT TITLE 1,261 1.3% 680 53.9% 1 13.0 128.0
JOURNAL 4,131 4.2% 2,130 51.6% 7 1410.5 7605.8
EXACT JOURNAL 1,169 1.2% 461 39.4% 343 3659.6 9479.5
SUBJECT 2,854 2.9% 1,196 41.9% 12 420.6 2024.3
EXACT SUBJECT 846 0.9% 255 30.1% 9 328.3 1321.1
THESAURUS 22 0.0% 13 59.1% 1 4.7 5.7
EXACT THESAURUS 212 0.2% 27 12.7% 76 798.5 2220.9
KEYWORD 35,893 36.6% 11,728 32.7% 18 904.4 6868.8
SUBFILE 272 0.3% 85 31.3% 20 427.3 1573.2
FORM 1,176 1.2% 379 32.2% 25 335.8 1341.2
DATE 1,066 1.1% 414 38.8% 12 279.3 1846.5
ADDED 235 0.2% 183 77.9% 5 24.6 38.0
ARTICLE 72 0.1% 20 27.8% 66 801.2 1453.2
AUTHOR AFFIL. 936 1.0% 440 47.0% 9 89.7 577.3
CONFERENCE 200 0.2% 94 47.0% 59 1223.1 6154.1
LANGUAGE 2,743 2.8% 680 24.8% 24 809.2 6461.9
CHEMICAL NAME 422 0.4% 258 61.1% 12 236.5 1017.0
ISSN 5 0.0% 4 80.0% 2,121 2121.0 0.0
ISBN 1 0.0% 0 0.0% 129 129.0 0.0
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 3 0.0% 3 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,190 3.3% 952 29.8% 13 590.9 4064.8
Other indexes 15 0.0% 2 13.3% 9 562.5 1802.0
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 15,615 19.8% 6,353 40.7% 7 308.3 3632.3
Single 63,206 80.2% 20,018 31.7% 14 635.6 5386.9
PRESENT commands, by type:
MARC 36.6%
OPAC 37.3%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)