MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/16/02 through 02/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 611 1,818 2,429
Davis 1,333 160 1,493
Irvine 347 0 347
Los Angeles 10 376 386
Riverside 358 60 418
San Diego 311 85 396
San Francisco 147 0 147
Santa Barbara 281 116 397
Santa Cruz 174 159 333
LBL 0 51 51
LLL 0 46 46
Other - UC 29 181 210
CSL 0 122 122
CSU n/a 156 156
Other-Non-UC n/a 3,464 3,464
_______ ______ _____
3,601 6,794 10,395
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 238 823 5,879
2-4 a.m. 178 794 6,131
4-6 a.m. 173 610 3,918
6-8 a.m. 366 1,051 8,714
8-10 a.m. 1,212 4,764 30,873
10-12 a.m. 1,891 7,716 49,878
12-2 p.m. 1,820 6,905 53,335
2-4 p.m. 2,143 7,459 57,421
4-6 p.m. 1,295 4,640 36,342
6-8 p.m. 495 1,851 21,602
8-10 p.m. 310 1,204 10,912
10-12 p.m. 274 927 6,826
__________ __________ __________ _________________
Total: 10,395 38,744 291,831
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,812 5,973 7,785
Davis 5,221 655 5,876
Irvine 1,901 0 1,901
Los Angeles 179 1,011 1,190
Riverside 1,725 162 1,887
San Diego 1,485 172 1,657
San Francisco 259 0 259
Santa Barbara 1,307 297 1,604
Santa Cruz 1,314 321 1,635
LBL 0 72 72
LLL 0 144 144
Other - UC 74 531 605
CSL 0 117 117
CSU n/a 635 635
Other-Non-UC n/a 13,377 13,377
_______ ______ _____
15,277 23,467 38,744
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,575 46,434 62,009
Davis 38,784 3,360 42,144
Irvine 11,157 0 11,157
Los Angeles 747 7,728 8,475
Riverside 10,295 1,212 11,507
San Diego 8,129 1,697 9,826
San Francisco 1,545 0 1,545
Santa Barbara 9,390 2,065 11,455
Santa Cruz 11,312 3,055 14,367
LBL 0 341 341
LLL 0 1,310 1,310
Other - UC 413 4,308 4,721
CSL 0 816 816
CSU n/a 7,473 7,473
Other-Non-UC n/a 104,685 104,685
_______ ______ _____
107,347 184,484 291,831
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 1.8
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) 11:01
Average session length (minutes:seconds) 15:03
Longest session recorded (minutes:seconds) 981:51
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 61.2
Retrievals per search - standard deviation 936.5
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 63.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 37,445 36.0%
DISPLAY (excluding automatic displays) 35,410 34.0%
ACFIND 3 0.0%
BROWSE 346 0.3%
SELECT 114 0.1%
HELP 629 0.6%
EXPLAIN 547 0.5%
SET/RESET 2,031 2.0%
SHOW 186 0.2%
AT 2,722 2.6%
ADD ON (AND, OR, AND NOT) 1,287 1.2%
LOGON or LOGOFF 18,083 17.4%
COMMENT 0 0.0%
SAVE 611 0.6%
USE 666 0.6%
OTHER 3,935 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 5,642 14.5% 1,228 21.8% 11 88.2 763.9
AUTHOR 1,437 3.7% 372 25.9% 10 120.8 979.9
CORPORATE AUTH 425 1.1% 145 34.1% 16 375.9 1941.6
EXACT CA 11 0.0% 2 18.2% 7 27.8 30.5
TITLE WORD 9,100 23.4% 2,924 32.1% 4 51.0 626.9
EXACT TITLE 6,443 16.6% 1,906 29.6% 2 19.0 126.1
TITLE -> TW 806 2.1% 209 25.9% 8 139.5 1599.8
TITLE -> XT 878 2.3% 393 44.8% 1 6.8 32.2
SUBJECT 1,606 4.1% 568 35.4% 42 547.6 3507.5
EXACT SUBJECT 132 0.3% 50 37.9% 83 320.6 921.8
PERIODICAL 6,983 17.9% 1,397 20.0% 5 67.7 1271.5
EXACT PE 2,758 7.1% 391 14.2% 2 18.7 342.9
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 47 0.1% 2 4.3% 72 99.1 142.1
DATE 374 1.0% 99 26.5% 4 109.2 953.6
FORM 287 0.7% 52 18.1% 20 207.7 1202.7
NUMBER* 23 0.1% 12 52.2% 2 1.8 0.8
MUSIC* 10 0.0% 7 70.0% 27 44.0 29.4
SERIES 954 2.5% 314 32.9% 3 69.0 307.7
UNIFORM TITLE 21 0.1% 5 23.8% 377 965.0 1282.6
Other indexes 980 2.5% 351 35.8% 1 5.4 48.4
* 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 1,851 5.0% 501 27.1% 3 74.3 678.8
Single 35,133 95.0% 9,414 26.8% 4 80.5 1090.0
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 22 7.1% 3 13.6% 3 33.4 108.3
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 1 0.3% 0 0.0% 17 17.0 0.0
SUBJECT 217 70.0% 57 26.3% 51 675.5 5354.0
EXACT SUBJECT 69 22.3% 36 52.2% 39 377.0 771.3
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.3% 0 0.0% 47 47.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 317 100% 97 30.6% 32 553.3 4576.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.4%
BRIEF 66.4%
LONG 9.7%
MARC 4.1%
FIELDS 3.0%
TAG 2.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.8%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.8%
Ten most frequent errors:
1. NS command - no next screen 35.0%
2. First word of command is invalid 24.9%
3. FIND command with invalid index name 11.4%
4. DISPLAY command contains invalid word 4.7%
5. Search term missing from search command 2.6%
6. DISPLAY command - no FIND results 2.1%
7. PS command - no previous screen 1.9%
8. KW search in database w/o KW index 1.4%
9. Valid command at an inappropriate time 1.2%
10. Command contains escape or arrow key 1.0%
11. All others 13.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.7%
2. FIND 11.9%
3. COMMAND WORDS 6.6%
4. PASSWORDS 6.4%
5. INDEXES 6.0%
6. Unrecognized term 5.5%
7. NRLF 2.9%
8. ADD-ON SEARCH 2.0%
9. DISPLAY 2.0%
10. DATABASES 1.8%
11. All others 28.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.7%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 11.1%
4. FIND command retrieves >1 book 4.3%
5. DISPLAY command - middle of >1 screen 4.3%
6. DISPLAY command-first of >1 screen 3.4%
7. KW search in database w/o KW index 2.2%
8. DISPLAY command - last of >1 screen 2.0%
9. 320 2.0%
10. TW search with zero results 1.9%
11. All others 30.6%
Ten most frequent SHOW requests:
1. HISTORY 52.3%
2. SEARCH 10.2%
3. SETTINGS 5.7%
4. GLOSSARY 5.1%
5. TIME 4.0%
6. MAIL STATUS 4.0%
7. DATABASE NEWS 2.3%
8. TERMINAL 2.3%
9. 0168 1.7%
10. EXPERIMENTS 1.1%
11. All others 11.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)