MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 10/28/00 through 11/03/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,165 2,660 3,825
Davis 2,412 375 2,787
Irvine 878 0 878
Los Angeles 169 696 865
Riverside 686 122 808
San Diego 461 249 710
San Francisco 415 0 415
Santa Barbara 604 362 966
Santa Cruz 481 504 985
LBL 0 172 172
LLL 0 101 101
Other - UC 45 241 286
CSL 0 169 169
CSU n/a 224 224
Other-Non-UC n/a 4,748 4,748
_______ ______ _____
7,316 10,623 17,939
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 257 1,055 8,440
2-4 a.m. 148 444 4,811
4-6 a.m. 199 712 4,480
6-8 a.m. 367 1,044 7,946
8-10 a.m. 1,993 6,750 51,309
10-12 a.m. 3,307 10,764 79,887
12-2 p.m. 3,392 11,535 88,393
2-4 p.m. 3,703 12,373 106,504
4-6 p.m. 2,486 7,626 59,042
6-8 p.m. 926 2,760 26,247
8-10 p.m. 713 2,009 17,448
10-12 p.m. 448 1,092 10,053
__________ __________ __________ _________________
Total: 17,939 58,164 464,560
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,823 8,146 10,969
Davis 9,436 1,199 10,635
Irvine 2,666 0 2,666
Los Angeles 385 1,814 2,199
Riverside 2,323 263 2,586
San Diego 1,222 447 1,669
San Francisco 720 0 720
Santa Barbara 2,133 813 2,946
Santa Cruz 1,991 2,193 4,184
LBL 0 208 208
LLL 0 268 268
Other - UC 56 971 1,027
CSL 0 258 258
CSU n/a 920 920
Other-Non-UC n/a 16,909 16,909
_______ ______ _____
23,755 34,409 58,164
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 30,990 63,589 94,579
Davis 74,632 6,955 81,587
Irvine 22,858 0 22,858
Los Angeles 3,149 12,112 15,261
Riverside 13,655 3,244 16,899
San Diego 9,108 3,884 12,992
San Francisco 5,064 0 5,064
Santa Barbara 15,647 7,596 23,243
Santa Cruz 9,392 9,160 18,552
LBL 0 2,178 2,178
LLL 0 2,686 2,686
Other - UC 365 7,118 7,483
CSL 0 2,768 2,768
CSU n/a 10,021 10,021
Other-Non-UC n/a 148,389 148,389
_______ ______ _____
184,860 279,700 464,560
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 8:25
Average session length (minutes:seconds) 12:52
Longest session recorded (minutes:seconds) 514:36
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 75.1
Retrievals per search - standard deviation 1137.0
Percent of searches completed with 0 results 28.3%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 56.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 56,286 35.7%
DISPLAY (excluding automatic displays) 49,222 31.2%
ACFIND 25 0.0%
BROWSE 410 0.3%
SELECT 285 0.2%
HELP 1,629 1.0%
EXPLAIN 1,517 1.0%
SET/RESET 4,248 2.7%
SHOW 453 0.3%
AT 3,149 2.0%
ADD ON (AND, OR, AND NOT) 1,829 1.2%
LOGON or LOGOFF 28,970 18.4%
COMMENT 22 0.0%
SAVE 1,380 0.9%
USE 1,306 0.8%
OTHER 7,118 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 7,837 13.5% 1,837 23.4% 11 97.2 518.9
AUTHOR 3,402 5.9% 804 23.6% 11 96.2 589.3
CORPORATE AUTH 630 1.1% 203 32.2% 21 635.1 2778.4
EXACT CA 21 0.0% 8 38.1% 111 752.2 1603.3
TITLE WORD 14,672 25.3% 4,664 31.8% 4 45.7 430.9
EXACT TITLE 7,683 13.2% 2,439 31.7% 2 22.2 130.3
TITLE -> TW 1,360 2.3% 369 27.1% 8 134.7 2663.7
TITLE -> XT 1,780 3.1% 807 45.3% 1 7.8 42.4
SUBJECT 4,292 7.4% 1,687 39.3% 48 455.1 2540.0
EXACT SUBJECT 271 0.5% 81 29.9% 57 451.7 1043.1
PERIODICAL 9,044 15.6% 1,834 20.3% 5 85.8 762.5
EXACT PE 3,570 6.1% 560 15.7% 3 21.4 115.9
RPE 12 0.0% 4 33.3% 5 18.5 24.7
XRP 1 0.0% 1 100% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 124 0.2% 27 21.8% 30 133.6 254.7
DATE 709 1.2% 167 23.6% 4 322.6 5663.0
FORM 502 0.9% 106 21.1% 21 1030.1 8224.9
NUMBER* 117 0.2% 45 38.5% 2 57.8 400.2
MUSIC* 7 0.0% 6 85.7% 44 44.0 0.0
SERIES 1,131 1.9% 374 33.1% 3 68.2 367.8
UNIFORM TITLE 38 0.1% 19 50.0% 27 51.7 93.8
Other indexes 873 1.5% 475 54.4% 1 46.5 483.9
* 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 2,603 4.7% 717 27.5% 4 133.7 2018.9
Single 52,698 95.3% 15,044 28.5% 5 104.7 1322.9
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 21 5.5% 3 14.3% 4 76.5 215.5
CORPORATE AUTH 4 1.0% 1 25.0% 2 7.3 10.1
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 323 84.8% 64 19.8% 34 131.1 285.0
EXACT SUBJECT 20 5.2% 4 20.0% 42 140.6 224.8
UNIFORM TITLE 4 1.0% 1 25.0% 35 29.7 9.2
SERIES 9 2.4% 1 11.1% 72 82.8 107.9
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 385 100% 74 19.2% 31 123.7 271.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.2%
BRIEF 70.5%
LONG 9.5%
MARC 2.8%
FIELDS 2.8%
TAG 2.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.1%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 28.6%
2. First word of command is invalid 27.9%
3. FIND command with invalid index name 13.5%
4. DISPLAY command contains invalid word 3.7%
5. KW search in database w/o KW index 2.5%
6. Search term missing from search command 2.4%
7. PS command - no previous screen 1.8%
8. Valid command at an inappropriate time 1.6%
9. DISPLAY command - no FIND results 1.6%
10. Command contains escape or arrow key 1.2%
11. All others 15.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.7%
2. FIND 13.1%
3. INDEXES 8.0%
4. COMMAND WORDS 5.3%
5. Unrecognized term 4.5%
6. PASSWORDS 4.0%
7. DATABASES 2.8%
8. DISPLAY 2.6%
9. ADD-ON SEARCH 1.8%
10. AT 1.6%
11. All others 29.5%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.1%
2. First word of command is invalid 15.5%
3. FIND command with invalid index name 12.3%
4. DISPLAY command - middle of >1 screen 5.0%
5. FIND command retrieves >1 book 3.1%
6. NS command - no next screen 2.8%
7. DISPLAY command-first of >1 screen 2.7%
8. TW search with zero results 2.3%
9. DISPLAY command-complete in one screen 2.1%
10. DISPLAY command - last of >1 screen 2.1%
11. All others 29.1%
Ten most frequent SHOW requests:
1. TIME 30.6%
2. HISTORY 28.4%
3. SEARCH 8.8%
4. GLOSSARY 7.4%
5. SETTINGS 3.2%
6. MAIL STATUS 3.2%
7. DATABASES 2.3%
8. SYSTEM NEWS 1.6%
9. DATABASE NEWS 1.4%
10. NEWS 1.1%
11. All others 12.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)