MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 12/01/00 through 12/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,838 8,440 11,278
Davis 6,299 1,092 7,391
Irvine 2,673 0 2,673
Los Angeles 473 2,188 2,661
Riverside 1,925 422 2,347
San Diego 1,513 840 2,353
San Francisco 1,246 0 1,246
Santa Barbara 1,347 920 2,267
Santa Cruz 1,073 687 1,760
LBL 0 357 357
LLL 0 321 321
Other - UC 103 710 813
CSL 0 613 613
CSU n/a 363 363
Other-Non UC n/a 14,308 14,308
_______ ______ _____
19,490 31,261 50,751
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 909 3,093 24,829
2-4 a.m. 551 2,232 17,661
4-6 a.m. 554 2,074 21,454
6-8 a.m. 1,431 3,995 31,825
8-10 a.m. 6,026 17,627 129,070
10-12 a.m. 9,600 33,319 273,434
12-2 p.m. 9,185 30,642 220,899
2-4 p.m. 10,630 34,669 287,968
4-6 p.m. 6,808 21,168 153,393
6-8 p.m. 2,393 7,168 64,980
8-10 p.m. 1,462 3,855 29,997
10-12 p.m. 1,202 3,456 44,492
__________ __________ __________ _________________
Total: 50,751 163,298 1,300,002
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,704 24,609 32,313
Davis 20,441 4,371 24,812
Irvine 9,493 0 9,493
Los Angeles 1,398 5,085 6,483
Riverside 5,830 1,109 6,939
San Diego 5,895 1,685 7,580
San Francisco 2,374 0 2,374
Santa Barbara 4,560 2,178 6,738
Santa Cruz 4,988 1,973 6,961
LBL 0 550 550
LLL 0 1,034 1,034
Other - UC 112 3,762 3,874
CSL 0 1,041 1,041
CSU n/a 992 992
Other-Non UC n/a 52,114 52,114
_______ ______ _____
62,795 100,503 163,298
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 65,504 185,718 251,222
Davis 126,484 20,200 146,684
Irvine 67,332 0 67,332
Los Angeles 13,410 50,420 63,830
Riverside 42,071 10,316 52,387
San Diego 28,075 16,673 44,748
San Francisco 17,871 0 17,871
Santa Barbara 36,614 18,041 54,655
Santa Cruz 28,404 15,298 43,702
LBL 0 6,384 6,384
LLL 0 7,945 7,945
Other - UC 725 16,807 17,532
CSL 0 7,016 7,016
CSU n/a 9,706 9,706
Other-Non UC n/a 508,988 508,988
_______ ______ _____
426,490 873,512 1,300,002
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 883:54
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 69.8
Retrievals per search - standard deviation 1190.2
Percent of searches completed with 0 results 27.7%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 63.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 157,861 35.3%
DISPLAY (excluding automatic displays) 142,778 31.9%
ACFIND 69 0.0%
BROWSE 869 0.2%
SELECT 711 0.2%
HELP 3,679 0.8%
EXPLAIN 3,550 0.8%
SET/RESET 11,982 2.7%
SHOW 1,375 0.3%
AT 8,689 1.9%
ADD ON (AND, OR, AND NOT) 5,302 1.2%
LOGON or LOGOFF 82,134 18.4%
COMMENT 64 0.0%
SAVE 3,707 0.8%
USE 3,769 0.8%
OTHER 20,757 4.6%
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 24,881 15.0% 5,913 23.8% 12 92.7 483.7
AUTHOR 7,623 4.6% 1,760 23.1% 13 116.3 568.2
CORPORATE AUTH 1,661 1.0% 589 35.5% 22 812.0 7940.7
EXACT CA 42 0.0% 6 14.3% 237 860.9 1514.1
TITLE WORD 40,604 24.5% 12,841 31.6% 4 42.9 323.5
EXACT TITLE 24,284 14.7% 7,839 32.3% 2 20.4 136.5
TITLE -> TW 4,258 2.6% 1,208 28.4% 8 60.3 209.8
TITLE -> XT 4,883 3.0% 2,434 49.8% 1 6.9 30.4
SUBJECT 9,636 5.8% 3,561 37.0% 43 406.3 2692.5
EXACT SUBJECT 552 0.3% 121 21.9% 71 686.5 2773.6
PERIODICAL 26,885 16.3% 5,270 19.6% 4 96.0 1509.2
EXACT PE 8,975 5.4% 1,242 13.8% 3 34.2 874.4
RPE 12 0.0% 7 58.3% 7 12.8 16.1
XRP 6 0.0% 1 16.7% 7 307.0 614.7
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 305 0.2% 35 11.5% 48 455.2 1971.6
DATE 2,304 1.4% 523 22.7% 4 92.4 472.7
FORM 2,327 1.4% 568 24.4% 16 359.9 4569.9
NUMBER* 121 0.1% 41 33.9% 1 368.5 2940.0
MUSIC* 59 0.0% 37 62.7% 40 100.5 133.5
SERIES 3,606 2.2% 1,085 30.1% 3 124.9 1766.2
UNIFORM TITLE 27 0.0% 10 37.0% 26 262.8 788.0
Other indexes 2,363 1.4% 1,021 43.2% 1 55.7 931.3
* 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 9,335 6.0% 2,574 27.6% 4 79.7 598.9
Single 146,144 94.0% 40,822 27.9% 5 98.9 1459.9
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 63 7.8% 4 6.3% 6 37.3 85.3
CORPORATE AUTH 2 0.2% 0 0.0% 45 45.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 645 80.0% 147 22.8% 32 110.0 241.2
EXACT SUBJECT 79 9.8% 7 8.9% 40 1060.9 3956.7
UNIFORM TITLE 1 0.1% 1 100% 0 0.0 0.0
SERIES 16 2.0% 3 18.8% 10 65.2 90.5
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 834 100% 165 19.8% 26 202.2 1340.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.4%
BRIEF 66.9%
LONG 11.4%
MARC 3.3%
FIELDS 3.0%
TAG 2.5%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 29.7%
2. First word of command is invalid 27.1%
3. FIND command with invalid index name 12.4%
4. DISPLAY command contains invalid word 4.0%
5. Search term missing from search command 2.6%
6. KW search in database w/o KW index 2.4%
7. PS command - no previous screen 1.8%
8. Max. # of ports to a Z39 db are in use 1.8%
9. DISPLAY command - no FIND results 1.8%
10. Valid command at an inappropriate time 1.4%
11. All others 14.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.8%
2. FIND 14.4%
3. INDEXES 7.8%
4. COMMAND WORDS 6.4%
5. PASSWORDS 4.5%
6. Unrecognized term 4.1%
7. DISPLAY 2.2%
8. DATABASES 2.2%
9. ADD-ON SEARCH 2.0%
10. CATALOG 1.9%
11. All others 30.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 21.8%
2. First word of command is invalid 13.6%
3. FIND command with invalid index name 11.6%
4. DISPLAY command - middle of >1 screen 4.1%
5. FIND command retrieves >1 book 3.2%
6. NS command - no next screen 3.1%
7. DISPLAY command-first of >1 screen 2.9%
8. F/BR with index invalid in current DB 2.3%
9. DISPLAY command - last of >1 screen 2.3%
10. TW search with zero results 2.3%
11. All others 32.9%
Ten most frequent SHOW requests:
1. TIME 35.7%
2. HISTORY 30.1%
3. SEARCH 7.6%
4. GLOSSARY 6.2%
5. SETTINGS 2.4%
6. MAIL STATUS 2.0%
7. MEDLINE NEWS 1.2%
8. MAIL SETTINGS 1.0%
9. DATABASE NEWS 0.9%
10. NEWS 0.9%
11. All others 12.1%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)