MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 08/01/00 through 08/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,771 10,480 14,251
Davis 8,714 1,557 10,271
Irvine 3,800 0 3,800
Los Angeles 948 3,514 4,462
Riverside 2,784 504 3,288
San Diego 2,452 1,094 3,546
San Francisco 1,844 0 1,844
Santa Barbara 1,933 1,509 3,442
Santa Cruz 1,873 909 2,782
LBL 0 557 557
LLL 0 478 478
Other - UC 264 783 1,047
CSL 0 721 721
CSU n/a 688 688
Other-Non UC n/a 19,976 19,976
_______ ______ _____
28,383 42,770 71,153
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,124 3,834 39,163
2-4 a.m. 754 3,268 31,706
4-6 a.m. 749 2,607 21,404
6-8 a.m. 1,995 6,307 50,283
8-10 a.m. 8,984 28,704 217,675
10-12 a.m. 13,933 48,712 342,237
12-2 p.m. 13,168 45,160 325,094
2-4 p.m. 15,206 51,484 379,326
4-6 p.m. 9,345 32,821 242,767
6-8 p.m. 2,735 8,775 71,443
8-10 p.m. 1,773 5,574 41,882
10-12 p.m. 1,387 4,559 42,254
__________ __________ __________ _________________
Total: 71,153 241,805 1,805,234
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,485 32,150 43,635
Davis 34,262 6,192 40,454
Irvine 11,323 0 11,323
Los Angeles 2,020 10,024 12,044
Riverside 10,459 1,245 11,704
San Diego 9,966 2,227 12,193
San Francisco 3,329 0 3,329
Santa Barbara 6,322 3,875 10,197
Santa Cruz 9,097 2,425 11,522
LBL 0 971 971
LLL 0 1,040 1,040
Other - UC 189 2,467 2,656
CSL 0 2,173 2,173
CSU n/a 2,187 2,187
Other-Non UC n/a 76,377 76,377
_______ ______ _____
98,452 143,353 241,805
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 93,712 243,124 336,836
Davis 208,688 29,136 237,824
Irvine 85,246 0 85,246
Los Angeles 14,736 82,734 97,470
Riverside 81,071 12,555 93,626
San Diego 43,274 19,915 63,189
San Francisco 29,573 0 29,573
Santa Barbara 52,603 31,594 84,197
Santa Cruz 48,060 21,741 69,801
LBL 0 11,081 11,081
LLL 0 7,326 7,326
Other - UC 1,066 19,998 21,064
CSL 0 9,055 9,055
CSU n/a 20,723 20,723
Other-Non UC n/a 638,223 638,223
_______ ______ _____
658,029 1,147,205 1,805,234
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.7
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1370
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 97.8
Retrievals per search - standard deviation 3479.0
Percent of searches completed with 0 results 27.0%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 60.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 234,214 35.8%
DISPLAY (excluding automatic displays) 212,714 32.5%
ACFIND 68 0.0%
BROWSE 1,178 0.2%
SELECT 802 0.1%
HELP 4,586 0.7%
EXPLAIN 5,264 0.8%
SET/RESET 15,919 2.4%
SHOW 1,434 0.2%
AT 15,152 2.3%
ADD ON (AND, OR, AND NOT) 7,464 1.1%
LOGON or LOGOFF 117,165 17.9%
COMMENT 1 0.0%
SAVE 4,062 0.6%
USE 5,370 0.8%
OTHER 29,289 4.5%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 36,172 14.8% 8,683 24.0% 11 84.5 422.1
AUTHOR 12,273 5.0% 2,950 24.0% 12 96.8 391.6
CORPORATE AUTH 2,432 1.0% 897 36.9% 19 779.8 6385.9
EXACT CA 92 0.0% 28 30.4% 124 1088.8 2637.9
TITLE WORD 60,987 24.9% 18,422 30.2% 4 43.1 428.1
EXACT TITLE 31,779 13.0% 9,767 30.7% 2 25.8 171.7
TITLE -> TW 6,042 2.5% 1,598 26.4% 9 58.0 206.7
TITLE -> XT 7,216 2.9% 3,544 49.1% 1 11.6 89.7
SUBJECT 11,079 4.5% 3,933 35.5% 50 857.5 10636.4
EXACT SUBJECT 666 0.3% 156 23.4% 59 377.9 930.7
PERIODICAL 45,170 18.5% 9,194 20.4% 5 86.8 1155.5
EXACT PE 14,763 6.0% 2,150 14.6% 2 20.7 206.2
RPE 18 0.0% 2 11.1% 6 9.0 12.0
XRP 11 0.0% 1 9.1% 4 7.4 8.4
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 573 0.2% 124 21.6% 20 180.4 718.7
DATE 3,720 1.5% 912 24.5% 5 107.8 949.7
FORM 2,927 1.2% 670 22.9% 12 278.5 3109.1
NUMBER* 302 0.1% 94 31.1% 2 27.6 205.2
MUSIC* 61 0.0% 30 49.2% 13 301.3 867.3
SERIES 5,374 2.2% 1,785 33.2% 3 63.3 629.6
UNIFORM TITLE 44 0.0% 23 52.3% 52 1469.0 3758.0
Other indexes 3,030 1.2% 1,367 45.1% 1 69.8 1024.0
* Number indexes include REPORT NUMBER STOCK NUMBER,
GOVERNMENT DOCUMENTS, and GPO ITEM NUMBER;
Music indexes include MUSICAL KEY, MUSIC PUBLISHER, and THEMATIC
By number of indexes:
Multiple 12,991 5.6% 3,654 28.1% 4 91.8 946.5
Single 217,677 94.4% 58,789 27.0% 5 103.5 2444.6
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 369 33.9% 107 29.0% 4 34.1 88.5
CORPORATE AUTH 7 0.6% 1 14.3% 229 242.7 228.6
EXACT CA 3 0.3% 0 0.0% 5 6.7 2.9
SUBJECT 621 57.1% 121 19.5% 44 158.0 535.2
EXACT SUBJECT 62 5.7% 6 9.7% 26 264.1 797.1
UNIFORM TITLE 2 0.2% 1 50.0% 6 6.0 0.0
SERIES 23 2.1% 7 30.4% 16 40.1 58.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,125 100% 248 22.0% 20 121.5 459.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
BRIEF 68.5%
LONG 10.3%
MARC 3.3%
FIELDS 3.1%
TAG 2.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 30.5%
2. First word of command is invalid 24.5%
3. FIND command with invalid index name 11.2%
4. DISPLAY command contains invalid word 4.2%
5. Max. # of ports to a Z39 db are in use 2.7%
6. Search term missing from search command 2.3%
7. KW search in database w/o KW index 2.1%
8. PS command - no previous screen 1.9%
9. DISPLAY command - no FIND results 1.6%
10. Valid command at an inappropriate time 1.6%
11. All others 17.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.4%
2. FIND 14.2%
3. INDEXES 7.6%
4. COMMAND WORDS 5.5%
5. Unrecognized term 5.3%
6. PASSWORDS 3.3%
7. DATABASES 3.1%
8. DISPLAY 2.7%
9. LOCATE (PE DB) 1.9%
10. ADD-ON SEARCH 1.5%
11. All others 31.5%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.3%
2. First word of command is invalid 13.2%
3. FIND command with invalid index name 11.3%
4. DISPLAY command - middle of >1 screen 4.2%
5. FIND command retrieves >1 book 3.4%
6. NS command - no next screen 3.2%
7. DISPLAY command-first of >1 screen 3.2%
8. F/BR with index invalid in current DB 2.4%
9. DISPLAY command - last of >1 screen 2.2%
10. Help requested from SET DB command 1.9%
11. All others 32.5%
Ten most frequent SHOW requests:
1. HISTORY 40.3%
2. SEARCH 12.3%
3. GLOSSARY 9.1%
4. SYSTEM2 NEWS 8.7%
5. SETTINGS 4.7%
6. SYSTEM NEWS 3.1%
7. MAIL STATUS 2.9%
8. DATABASE NEWS 2.1%
9. TIME 1.4%
10. DATABASES 1.4%
11. All others 14.1%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)