MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/04/02 through 05/10/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 599 2,030 2,629
Davis 1,331 146 1,477
Irvine 358 0 358
Los Angeles 9 403 412
Riverside 378 68 446
San Diego 349 106 455
San Francisco 151 0 151
Santa Barbara 226 65 291
Santa Cruz 195 154 349
LBL 0 80 80
LLL 0 75 75
Other - UC 28 247 275
CSL 0 112 112
CSU n/a 127 127
Other-Non-UC n/a 2,977 2,977
_______ ______ _____
3,624 6,590 10,214
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 177 820 5,233
2-4 a.m. 121 391 4,071
4-6 a.m. 108 341 2,657
6-8 a.m. 300 1,061 6,817
8-10 a.m. 1,223 5,021 31,030
10-12 a.m. 1,998 7,343 46,748
12-2 p.m. 1,797 7,015 50,930
2-4 p.m. 2,161 8,991 62,815
4-6 p.m. 1,310 5,803 41,199
6-8 p.m. 485 2,073 17,076
8-10 p.m. 308 1,627 9,317
10-12 p.m. 226 1,389 7,469
__________ __________ __________ _________________
Total: 10,214 41,875 285,362
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,729 6,082 7,811
Davis 4,934 792 5,726
Irvine 1,570 0 1,570
Los Angeles 14 1,240 1,254
Riverside 2,325 157 2,482
San Diego 1,477 307 1,784
San Francisco 424 0 424
Santa Barbara 1,157 170 1,327
Santa Cruz 2,181 1,542 3,723
LBL 0 99 99
LLL 0 160 160
Other - UC 24 1,426 1,450
CSL 0 152 152
CSU n/a 564 564
Other-Non-UC n/a 13,349 13,349
_______ ______ _____
15,835 26,040 41,875
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,585 45,775 61,360
Davis 35,435 3,395 38,830
Irvine 11,857 0 11,857
Los Angeles 42 9,251 9,293
Riverside 11,933 1,414 13,347
San Diego 7,264 3,875 11,139
San Francisco 2,836 0 2,836
Santa Barbara 10,375 1,245 11,620
Santa Cruz 10,069 3,879 13,948
LBL 0 634 634
LLL 0 1,623 1,623
Other - UC 154 4,773 4,927
CSL 0 1,110 1,110
CSU n/a 6,979 6,979
Other-Non-UC n/a 95,859 95,859
_______ ______ _____
105,550 179,812 285,362
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 4.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:08
Average session length (minutes:seconds) 15:21
Longest session recorded (minutes:seconds) 814:35
Average number of searches completed per session 4.0
Retrievals per search - median 2.0
Retrievals per search - average 60.2
Retrievals per search - standard deviation 701.3
Percent of searches completed with 0 results 27.9%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 65.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 40,295 38.1%
DISPLAY (excluding automatic displays) 34,784 32.9%
ACFIND 17 0.0%
BROWSE 139 0.1%
SELECT 92 0.1%
HELP 637 0.6%
EXPLAIN 626 0.6%
SET/RESET 1,898 1.8%
SHOW 189 0.2%
AT 2,251 2.1%
ADD ON (AND, OR, AND NOT) 1,558 1.5%
LOGON or LOGOFF 18,111 17.1%
COMMENT 0 0.0%
SAVE 623 0.6%
USE 630 0.6%
OTHER 4,007 3.8%
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 5,793 13.7% 1,363 23.5% 10 81.3 373.9
AUTHOR 1,483 3.5% 394 26.6% 13 94.4 278.3
CORPORATE AUTH 367 0.9% 134 36.5% 18 363.3 1860.5
EXACT CA 6 0.0% 3 50.0% 4 3.7 1.5
TITLE WORD 10,058 23.9% 3,152 31.3% 4 53.3 817.6
EXACT TITLE 7,374 17.5% 2,201 29.8% 2 18.1 131.9
TITLE -> TW 1,011 2.4% 271 26.8% 8 51.7 145.3
TITLE -> XT 1,087 2.6% 483 44.4% 2 5.2 13.7
SUBJECT 1,825 4.3% 608 33.3% 56 581.7 2621.5
EXACT SUBJECT 134 0.3% 42 31.3% 65 661.7 1297.4
PERIODICAL 7,399 17.6% 1,757 23.7% 5 70.5 784.5
EXACT PE 2,800 6.6% 469 16.7% 2 41.6 607.1
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 1 0.0% 0 0.0% 3 3.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 85 0.2% 16 18.8% 40 458.8 1388.9
DATE 705 1.7% 131 18.6% 3 67.3 691.7
FORM 376 0.9% 82 21.8% 13 393.9 1622.3
NUMBER* 38 0.1% 20 52.6% 3 57.1 218.1
MUSIC* 9 0.0% 5 55.6% 28 25.0 15.6
SERIES 802 1.9% 276 34.4% 6 94.8 495.5
UNIFORM TITLE 10 0.0% 2 20.0% 431 408.5 417.9
Other indexes 789 1.9% 382 48.4% 1 16.3 141.8
* 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 2,213 5.6% 557 25.2% 3 105.1 761.7
Single 37,590 94.4% 10,649 28.3% 4 81.9 837.4
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 19 15.3% 5 26.3% 6 50.6 155.6
CORPORATE AUTH 1 0.8% 0 0.0% 67 67.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 84 67.7% 14 16.7% 38 125.9 274.4
EXACT SUBJECT 20 16.1% 0 0.0% 45 125.1 186.5
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 133 100% 22 16.5% 31 113.3 239.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.3%
BRIEF 67.3%
LONG 10.4%
MARC 3.7%
FIELDS 3.5%
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 6.9%
Ten most frequent errors:
1. NS command - no next screen 34.1%
2. First word of command is invalid 24.5%
3. FIND command with invalid index name 13.2%
4. DISPLAY command contains invalid word 4.7%
5. Search term missing from search command 2.8%
6. PS command - no previous screen 1.9%
7. Valid command at an inappropriate time 1.6%
8. DISPLAY command - no FIND results 1.5%
9. Command contains escape or arrow key 1.3%
10. KW search in database w/o KW index 1.1%
11. All others 13.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 31.8%
2. FIND 10.5%
3. INDEXES 6.2%
4. Unrecognized term 5.9%
5. COMMAND WORDS 4.3%
6. PASSWORDS 3.7%
7. DATABASES 2.6%
8. DISPLAY 2.4%
9. CATALOG 1.9%
10. LOCATE (PE DB) 1.9%
11. All others 28.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.2%
2. FIND command with invalid index name 14.7%
3. First word of command is invalid 14.3%
4. DISPLAY command - middle of >1 screen 3.8%
5. FIND command retrieves >1 book 3.1%
6. DISPLAY command-first of >1 screen 3.0%
7. F/BR with index invalid in current DB 2.5%
8. NS command - no next screen 2.5%
9. TW search with zero results 2.2%
10. DISPLAY command-complete in one screen 1.7%
11. All others 27.0%
Ten most frequent SHOW requests:
1. HISTORY 54.5%
2. SETTINGS 8.4%
3. SEARCH 7.9%
4. GLOSSARY 4.5%
5. DATABASE NEWS 4.5%
6. UCB INFORMATION 2.2%
7. UCSB INFORMATION 1.7%
8. 2292 1.7%
9. MAIL STATUS 1.7%
10. SYSTEMS INFORMATION 1.7%
11. All others 11.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)