MELSRV COMPUTER ARTICLES DATABASES Z39.50 SERVER STATISTICS
Time period: 02/17/01 through 02/23/01
1.0 SUMMARY STATISTICS
_______________________
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 60 2,271
2-4 a.m. 11 35
4-6 a.m. 3 0
6-8 a.m. 13 725
8-10 a.m. 74 1,077
10-12 a.m. 318 5,442
12-2 p.m. 346 3,974
2-4 p.m. 410 4,376
4-6 p.m. 351 4,841
6-8 p.m. 213 1,976
8-10 p.m. 128 1,890
10-12 p.m. 100 1,544
__________ _____________ _________________
Total: 2,027 28,151
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 5
Davis 4
Irvine 3
Los Angeles 0
Riverside 2
San Diego 59
San Francisco 0
Santa Barbara 0
Santa Cruz 0
Lawrence Berkeley 0
Lawrence Livermore 4
Los Alamos 0
MELWEB 1,116
Searchlight 739
Other - UC 90
Other-Network UC 5
_____
2,027
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 95
Davis 41
Irvine 0
Los Angeles 0
Riverside 4
San Diego 6
San Francisco 0
Santa Barbara 0
Santa Cruz 0
Lawrence Berkeley 0
Lawrence Livermore 25
Los Alamos 0
MELWEB 25,705
Searchlight 581
Other - UC 1,000
Other-Network UC 694
_____
28,151
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 0.6
Standard deviation in seconds 1.1
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.7
2.0 COMPUTER ARTICLES Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 0:11
Average session length (minutes:seconds) 8:47
Longest session recorded (minutes:seconds) 89:44
Average number of searches completed per session 0.0
Retrievals per search - median 1.0
Retrievals per search - average 1006.8
Retrievals per search - standard deviation 8413.8
Percent of searches completed with 0 results 48.0%
Percent of searches entered that are long 0.0%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 2,027 23.3%
PRESENT 5,424 62.5%
INIT or CLOSE 1,218 14.0%
OTHER 14 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 123 5.0% 85 69.1% 2 57.7 221.7
TITLE WORD 188 7.7% 114 60.6% 13 539.7 4059.1
EXACT TITLE 24 1.0% 13 54.2% 2 29.2 77.9
JOURNAL TITLE 56 2.3% 42 75.0% 39 989.5 3029.0
EXACT JOURNAL 53 2.2% 8 15.1% 1,132 7361.7 12976.5
SUBJECT WORD 161 6.6% 101 62.7% 22 341.3 1352.8
EXACT SUBJECT 64 2.6% 29 45.3% 15 1000.1 2952.3
KEYWORD 1,466 59.8% 643 43.9% 22 1944.6 12610.4
DATE 34 1.4% 11 32.4% 40 109.5 220.3
ADDED SINCE 11 0.4% 7 63.6% 17 25.8 24.9
PUB TYPE 7 0.3% 3 42.9% 13 14.0 13.1
SUBFILE 6 0.2% 4 66.7% 12 11.5 13.4
ID 1 0.0% 0 0.0% 1 1.0 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 18 0.7% 3 16.7% 52 123.6 306.4
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 235 9.6% 78 33.2% 30 1492.4 6399.7
Other indexes 4 0.2% 3 75.0% 190 190.0 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 376 18.5% 146 38.8% 23 1043.0 5324.6
Single 1,651 81.4% 827 50.1% 23 2185.5 12798.1
PRESENT commands, by type:
MARC 48.7%
OPAC 32.4%
SCPmm/dd srv.comp MELSRV COMPUTER ARTICLES DATABASES Z39.50 SERVER STATISTICS (w