MELSRV COMPUTER ARTICLES DATABASES Z39.50 SERVER STATISTICS
Time period: 01/13/01 through 01/19/01
1.0 SUMMARY STATISTICS
_______________________
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 27 1,199
2-4 a.m. 9 56
4-6 a.m. 17 154
6-8 a.m. 13 87
8-10 a.m. 81 526
10-12 a.m. 170 1,762
12-2 p.m. 225 2,380
2-4 p.m. 275 2,787
4-6 p.m. 178 850
6-8 p.m. 156 1,293
8-10 p.m. 69 429
10-12 p.m. 52 789
__________ _____________ _________________
Total: 1,272 12,312
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 1
Davis 2
Irvine 2
Los Angeles 1
Riverside 0
San Diego 19
San Francisco 0
Santa Barbara 0
Santa Cruz 0
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 599
Searchlight 585
Other - UC 38
Other-Network UC 25
_____
1,272
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 0
Davis 0
Irvine 0
Los Angeles 0
Riverside 0
San Diego 0
San Francisco 0
Santa Barbara 0
Santa Cruz 0
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 10,768
Searchlight 1,011
Other - UC 295
Other-Network UC 238
_____
12,312
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 0.7
Standard deviation in seconds 3.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.4
2.0 COMPUTER ARTICLES Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 0:08
Average session length (minutes:seconds) 7:23
Longest session recorded (minutes:seconds) 82:19
Average number of searches completed per session 0.0
Retrievals per search - median 0.0
Retrievals per search - average 1621.8
Retrievals per search - standard deviation 12353
Percent of searches completed with 0 results 51.6%
Percent of searches entered that are long 0.2%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 1,272 27.0%
PRESENT 2,550 54.1%
INIT or CLOSE 891 18.9%
OTHER 2 0.0%
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 77 5.2% 57 74.0% 4 15.3 20.5
TITLE WORD 126 8.5% 67 53.2% 17 403.4 1595.4
EXACT TITLE 15 1.0% 13 86.7% 2 2.0 1.4
JOURNAL TITLE 32 2.2% 26 81.3% 117 487.2 740.9
EXACT JOURNAL 42 2.8% 10 23.8% 21,142 24148.6 25558.9
SUBJECT WORD 74 5.0% 43 58.1% 9 595.1 2259.2
EXACT SUBJECT 27 1.8% 8 29.6% 18 690.4 1590.8
KEYWORD 927 62.8% 469 50.6% 18 2690.2 18398.9
DATE 21 1.4% 6 28.6% 23 433.7 1123.9
ADDED SINCE 12 0.8% 9 75.0% 17 43.3 55.4
PUB TYPE 1 0.1% 0 0.0% 22 22.0 0.0
SUBFILE 4 0.3% 1 25.0% 3 3.0 1.0
ID 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
SIC 0 0.0% 0 0.0% 0 0.0 0.0
ILLUS 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 6 0.4% 0 0.0% 66 2169.5 4796.3
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 109 7.4% 33 30.3% 19 5407.8 24046.7
Other indexes 2 0.1% 0 0.0% 40 40.0 0.0
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 182 14.3% 76 41.8% 22 4064.0 20471.6
Single 1,090 85.7% 580 53.2% 19 3200.2 16955.5
PRESENT commands, by type:
MARC 50.5%
OPAC 28.2%
SCPmm/dd srv.comp MELSRV COMPUTER ARTICLES DATABASES Z39.50 SERVER STATISTICS (w