MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/16/02 through 03/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 593 1,957 2,550
Davis 1,180 150 1,330
Irvine 297 0 297
Los Angeles 6 367 373
Riverside 370 71 441
San Diego 296 136 432
San Francisco 101 0 101
Santa Barbara 202 73 275
Santa Cruz 137 133 270
LBL 0 64 64
LLL 0 46 46
Other - UC 12 209 221
CSL 0 123 123
CSU n/a 125 125
Other-Non-UC n/a 3,392 3,392
_______ ______ _____
3,194 6,846 10,040
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 243 818 8,029
2-4 a.m. 205 629 5,595
4-6 a.m. 206 603 4,468
6-8 a.m. 412 1,044 8,558
8-10 a.m. 1,465 5,905 40,606
10-12 a.m. 1,932 7,572 59,046
12-2 p.m. 1,652 6,004 56,684
2-4 p.m. 1,749 6,378 49,016
4-6 p.m. 1,220 4,800 36,787
6-8 p.m. 430 1,828 14,904
8-10 p.m. 266 908 7,013
10-12 p.m. 260 731 5,726
__________ __________ __________ _________________
Total: 10,040 37,220 296,432
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,625 5,840 7,465
Davis 4,748 886 5,634
Irvine 1,603 0 1,603
Los Angeles 22 812 834
Riverside 2,110 261 2,371
San Diego 1,263 233 1,496
San Francisco 303 0 303
Santa Barbara 964 166 1,130
Santa Cruz 988 521 1,509
LBL 0 79 79
LLL 0 163 163
Other - UC 8 537 545
CSL 0 181 181
CSU n/a 624 624
Other-Non-UC n/a 13,283 13,283
_______ ______ _____
13,634 23,586 37,220
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 13,928 44,580 58,508
Davis 34,400 6,443 40,843
Irvine 10,103 0 10,103
Los Angeles 158 7,893 8,051
Riverside 11,296 3,614 14,910
San Diego 4,684 2,282 6,966
San Francisco 2,753 0 2,753
Santa Barbara 8,564 1,384 9,948
Santa Cruz 9,437 5,288 14,725
LBL 0 774 774
LLL 0 861 861
Other - UC 76 10,913 10,989
CSL 0 1,186 1,186
CSU n/a 6,538 6,538
Other-Non-UC n/a 109,277 109,277
_______ ______ _____
95,399 201,033 296,432
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 8.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.5
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:07
Average session length (minutes:seconds) 15:06
Longest session recorded (minutes:seconds) 473:28
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 68.7
Retrievals per search - standard deviation 1170.4
Percent of searches completed with 0 results 25.2%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 66.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 36,003 35.7%
DISPLAY (excluding automatic displays) 34,573 34.3%
ACFIND 9 0.0%
BROWSE 239 0.2%
SELECT 167 0.2%
HELP 572 0.6%
EXPLAIN 614 0.6%
SET/RESET 1,872 1.9%
SHOW 197 0.2%
AT 2,575 2.6%
ADD ON (AND, OR, AND NOT) 1,195 1.2%
LOGON or LOGOFF 17,768 17.6%
COMMENT 0 0.0%
SAVE 664 0.7%
USE 551 0.5%
OTHER 3,919 3.9%
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 5,529 14.7% 1,138 20.6% 11 84.0 683.1
AUTHOR 1,484 3.9% 353 23.8% 9 89.4 360.4
CORPORATE AUTH 378 1.0% 122 32.3% 27 241.7 876.3
EXACT CA 23 0.1% 3 13.0% 8 450.1 1923.0
TITLE WORD 7,940 21.1% 2,349 29.6% 4 59.0 1722.3
EXACT TITLE 5,289 14.0% 1,536 29.0% 2 14.2 93.2
TITLE -> TW 977 2.6% 224 22.9% 7 106.1 1433.6
TITLE -> XT 1,161 3.1% 475 40.9% 1 10.6 104.9
SUBJECT 1,664 4.4% 561 33.7% 41 564.4 3351.4
EXACT SUBJECT 95 0.3% 13 13.7% 82 336.5 710.2
PERIODICAL 7,783 20.6% 1,558 20.0% 5 104.1 1639.4
EXACT PE 2,656 7.0% 352 13.3% 2 44.8 608.9
RPE 4 0.0% 1 25.0% 10 7.7 4.9
XRP 1 0.0% 0 0.0% 10 10.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 133 0.4% 28 21.1% 32 213.1 707.8
DATE 374 1.0% 82 21.9% 4 92.2 502.7
FORM 404 1.1% 91 22.5% 14 123.3 428.8
NUMBER* 14 0.0% 5 35.7% 1 1.8 1.1
MUSIC* 19 0.1% 8 42.1% 2 49.9 103.8
SERIES 830 2.2% 235 28.3% 6 131.9 1023.2
UNIFORM TITLE 6 0.0% 1 16.7% 25 85.4 139.9
Other indexes 945 2.5% 409 43.3% 1 21.3 250.0
* 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 1,994 5.6% 502 25.2% 4 90.8 1060.5
Single 33,600 94.4% 8,513 25.3% 4 92.1 1389.2
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 16 7.5% 3 18.8% 13 71.7 122.7
CORPORATE AUTH 1 0.5% 0 0.0% 15 15.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 180 84.1% 35 19.4% 44 199.8 772.7
EXACT SUBJECT 14 6.5% 1 7.1% 31 160.9 261.8
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 3 1.4% 0 0.0% 8 12.0 11.5
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 228 100% 41 18.0% 32 173.5 686.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.7%
BRIEF 66.9%
LONG 9.5%
MARC 4.3%
FIELDS 3.4%
TAG 2.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.7%
Ten most frequent errors:
1. NS command - no next screen 33.3%
2. First word of command is invalid 24.6%
3. FIND command with invalid index name 13.1%
4. DISPLAY command contains invalid word 4.5%
5. Search term missing from search command 3.0%
6. PS command - no previous screen 2.0%
7. Valid command at an inappropriate time 1.6%
8. DISPLAY command - no FIND results 1.2%
9. KW search in database w/o KW index 1.2%
10. Command contains escape or arrow key 1.0%
11. All others 14.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 31.9%
2. FIND 11.6%
3. Unrecognized term 7.5%
4. COMMAND WORDS 6.0%
5. PASSWORDS 4.7%
6. INDEXES 4.6%
7. DISPLAY 2.6%
8. ADD-ON SEARCH 2.4%
9. NRLF 1.8%
10. AT 1.6%
11. All others 25.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.7%
2. First word of command is invalid 13.5%
3. FIND command with invalid index name 12.2%
4. DISPLAY command - middle of >1 screen 5.1%
5. DISPLAY command-first of >1 screen 4.3%
6. NS command - no next screen 4.1%
7. FIND command retrieves >1 book 3.5%
8. DISPLAY command-complete in one screen 2.3%
9. DISPLAY command - last of >1 screen 2.0%
10. F/BR with index invalid in current DB 1.6%
11. All others 25.7%
Ten most frequent SHOW requests:
1. HISTORY 58.0%
2. SEARCH 10.8%
3. GLOSSARY 7.4%
4. SETTINGS 7.4%
5. LAUC NEWS 2.8%
6. DATABASE NEWS 2.3%
7. PSYCINFO NEWS 1.7%
8. TIMEOUT SETTING 1.1%
9. PE LOADING STATISTICS 1.1%
10. MAIL STATUS 1.1%
11. All others 6.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)