MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 11/01/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 44,297 1,508,360
INS90 16,116 115,334
INS85 13,889 53,880
INS80 12,967 32,403
INS69 13,429 48,908
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,727 73,118
2-4 a.m. 1,185 15,958
4-6 a.m. 720 15,649
6-8 a.m. 749 15,483
8-10 a.m. 5,752 121,992
10-12 a.m. 14,226 249,272
12-2 p.m. 16,235 278,891
2-4 p.m. 21,058 353,570
4-6 p.m. 17,668 300,648
6-8 p.m. 8,608 142,513
8-10 p.m. 6,489 95,565
10-12 p.m. 5,281 96,226
__________ _____________ _________________
Total: 100,698 1,758,885
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 276
Davis 202
Irvine 128
Los Angeles 640
Riverside 3
San Diego 101
San Francisco 18
Santa Barbara 233
Santa Cruz 36
Lawrence Berkeley 180
Lawrence Livermore 49
Los Alamos 0
MELWEB 0
Searchlight 17,441
Other - UC 81,256
Other-Network UC 135
_____
100,698
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,965
Davis 3,864
Irvine 3,359
Los Angeles 1,823
Riverside 7
San Diego 666
San Francisco 79
Santa Barbara 4,247
Santa Cruz 530
Lawrence Berkeley 2,861
Lawrence Livermore 2,615
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 1,734,191
Other-Network UC 678
_____
1,758,885
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 6.1
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) 17:15
Longest session recorded (minutes:seconds) 226:33
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 378.0
Retrievals per search - standard deviation 4357.7
Percent of searches completed with 0 results 36.4%
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 100,698 21.5%
PRESENT 312,367 66.8%
INIT or CLOSE 54,156 11.6%
OTHER 503 0.1%
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 30,218 24.5% 9,894 32.7% 9 63.2 444.0
TITLE WORD 21,627 17.5% 9,768 45.2% 3 297.4 5479.9
EXACT TITLE 1,435 1.2% 800 55.7% 1 18.4 281.6
JOURNAL 4,996 4.1% 2,559 51.2% 7 1617.4 12708.3
EXACT JOURNAL 1,137 0.9% 471 41.4% 304 3190.5 9067.5
SUBJECT 4,000 3.2% 2,005 50.1% 9 319.3 1672.8
EXACT SUBJECT 624 0.5% 155 24.8% 8 940.4 4900.0
THESAURUS 15 0.0% 12 80.0% 9 6.7 4.0
EXACT THESAURUS 157 0.1% 25 15.9% 10 1010.5 3360.7
KEYWORD 48,305 39.2% 16,872 34.9% 16 846.3 5921.4
SUBFILE 88 0.1% 12 13.6% 49 570.3 1358.3
FORM 988 0.8% 319 32.3% 12 180.7 767.5
DATE 1,059 0.9% 341 32.2% 9 100.1 361.5
ADDED 315 0.3% 205 65.1% 3 9.2 15.3
ARTICLE 70 0.1% 27 38.6% 75 552.5 1143.5
AUTHOR AFFIL. 1,073 0.9% 466 43.4% 9 56.7 329.2
CONFERENCE 152 0.1% 72 47.4% 21 363.3 835.6
LANGUAGE 2,976 2.4% 791 26.6% 31 940.2 5171.7
CHEMICAL NAME 431 0.3% 193 44.8% 11 266.9 1636.0
ISSN 39 0.0% 20 51.3% 6 497.0 1704.3
ISBN 50 0.0% 44 88.0% 89 127.0 105.1
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 2 0.0% 2 100% 0 0.0 0.0
STANDARD NUMBER 1 0.0% 1 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,559 2.9% 1,155 32.4% 16 1298.0 10599.3
Other indexes 19 0.0% 16 84.2% 7 13.7 17.0
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 19,212 19.1% 8,233 42.9% 6 462.8 5534.0
Single 81,486 80.9% 28,388 34.8% 13 621.1 5433.5
PRESENT commands, by type:
MARC 37.2%
OPAC 34.0%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)