MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/09/02 through 03/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 613 1,985 2,598
Davis 1,351 159 1,510
Irvine 287 0 287
Los Angeles 11 382 393
Riverside 355 91 446
San Diego 322 106 428
San Francisco 153 0 153
Santa Barbara 272 98 370
Santa Cruz 157 179 336
LBL 0 72 72
LLL 0 44 44
Other - UC 22 202 224
CSL 0 145 145
CSU n/a 131 131
Other-Non-UC n/a 3,395 3,395
_______ ______ _____
3,543 6,989 10,532
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 253 978 9,436
2-4 a.m. 192 764 9,209
4-6 a.m. 176 476 4,238
6-8 a.m. 415 1,339 9,686
8-10 a.m. 1,441 5,294 37,507
10-12 a.m. 2,176 8,062 56,467
12-2 p.m. 1,681 5,966 44,392
2-4 p.m. 1,772 7,230 51,063
4-6 p.m. 1,258 5,097 44,955
6-8 p.m. 550 1,865 12,942
8-10 p.m. 315 1,315 10,568
10-12 p.m. 303 933 9,752
__________ __________ __________ _________________
Total: 10,532 39,319 300,215
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,566 6,681 8,247
Davis 5,288 721 6,009
Irvine 983 0 983
Los Angeles 21 852 873
Riverside 2,254 239 2,493
San Diego 1,436 224 1,660
San Francisco 431 0 431
Santa Barbara 1,064 191 1,255
Santa Cruz 968 832 1,800
LBL 0 61 61
LLL 0 109 109
Other - UC 9 524 533
CSL 0 182 182
CSU n/a 625 625
Other-Non-UC n/a 14,058 14,058
_______ ______ _____
14,020 25,299 39,319
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 13,784 57,568 71,352
Davis 34,208 3,612 37,820
Irvine 7,186 0 7,186
Los Angeles 68 8,236 8,304
Riverside 12,271 1,635 13,906
San Diego 6,573 3,458 10,031
San Francisco 3,608 0 3,608
Santa Barbara 10,444 1,645 12,089
Santa Cruz 4,654 4,743 9,397
LBL 0 323 323
LLL 0 616 616
Other - UC 102 5,701 5,803
CSL 0 1,137 1,137
CSU n/a 5,868 5,868
Other-Non-UC n/a 112,775 112,775
_______ ______ _____
92,898 207,317 300,215
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 2.5
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) 11:11
Average session length (minutes:seconds) 15:12
Longest session recorded (minutes:seconds) 533:23
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 65.0
Retrievals per search - standard deviation 1309.4
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 66.5%
Commands entered, by type, excluding errors:
Total Percentage
FIND 37,966 36.2%
DISPLAY (excluding automatic displays) 34,727 33.2%
ACFIND 8 0.0%
BROWSE 271 0.3%
SELECT 209 0.2%
HELP 683 0.7%
EXPLAIN 676 0.6%
SET/RESET 2,033 1.9%
SHOW 218 0.2%
AT 2,491 2.4%
ADD ON (AND, OR, AND NOT) 1,337 1.3%
LOGON or LOGOFF 18,458 17.6%
COMMENT 0 0.0%
SAVE 681 0.7%
USE 666 0.6%
OTHER 4,315 4.1%
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 5,320 13.4% 1,270 23.9% 10 91.2 644.5
AUTHOR 1,306 3.3% 334 25.6% 10 106.1 450.8
CORPORATE AUTH 390 1.0% 147 37.7% 11 213.3 1167.4
EXACT CA 31 0.1% 17 54.8% 3 20.6 54.8
TITLE WORD 8,508 21.4% 2,706 31.8% 4 47.3 293.8
EXACT TITLE 7,032 17.7% 2,221 31.6% 2 17.0 128.2
TITLE -> TW 836 2.1% 222 26.6% 8 94.2 682.0
TITLE -> XT 941 2.4% 441 46.9% 1 12.3 109.1
SUBJECT 1,808 4.5% 614 34.0% 48 597.7 6341.5
EXACT SUBJECT 103 0.3% 34 33.0% 133 852.3 2488.1
PERIODICAL 7,770 19.5% 1,508 19.4% 5 73.3 1080.6
EXACT PE 2,678 6.7% 393 14.7% 3 33.9 541.7
RPE 1 0.0% 0 0.0% 15 15.0 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 146 0.4% 20 13.7% 18 70.6 160.9
DATE 466 1.2% 100 21.5% 4 38.2 124.5
FORM 508 1.3% 91 17.9% 16 522.0 3902.5
NUMBER* 17 0.0% 10 58.8% 1 434.6 1141.0
MUSIC* 34 0.1% 4 11.8% 485 646.6 554.7
SERIES 967 2.4% 336 34.7% 3 64.5 335.7
UNIFORM TITLE 6 0.0% 2 33.3% 33 30.5 22.6
Other indexes 924 2.3% 440 47.6% 1 38.8 458.7
* 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 2,032 5.4% 517 25.4% 4 83.8 530.9
Single 35,488 94.6% 9,837 27.7% 4 90.1 1599.5
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 14 5.4% 4 28.6% 4 35.5 58.7
CORPORATE AUTH 2 0.8% 1 50.0% 588 588.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 226 87.9% 58 25.7% 30 112.9 319.7
EXACT SUBJECT 13 5.1% 3 23.1% 154 432.0 1005.2
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 2 0.8% 1 50.0% 125 125.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 262 100% 68 26.0% 29 125.8 377.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.0%
BRIEF 66.8%
LONG 9.2%
MARC 5.3%
FIELDS 3.7%
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 6.8%
Ten most frequent errors:
1. NS command - no next screen 33.4%
2. First word of command is invalid 25.3%
3. FIND command with invalid index name 13.0%
4. DISPLAY command contains invalid word 3.9%
5. Search term missing from search command 2.3%
6. PS command - no previous screen 2.0%
7. DISPLAY command - no FIND results 1.8%
8. Valid command at an inappropriate time 1.7%
9. KW search in database w/o KW index 1.4%
10. Command contains escape or arrow key 1.2%
11. All others 13.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 31.5%
2. FIND 12.6%
3. INDEXES 6.5%
4. Unrecognized term 6.1%
5. COMMAND WORDS 4.4%
6. PASSWORDS 3.7%
7. DISPLAY 2.8%
8. LOCATE (PE DB) 1.9%
9. DATABASES 1.6%
10. ADD-ON SEARCH 1.5%
11. All others 27.4%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.5%
2. First word of command is invalid 13.8%
3. FIND command with invalid index name 11.3%
4. NS command - no next screen 3.3%
5. DISPLAY command - middle of >1 screen 2.9%
6. FIND command retrieves >1 book 2.4%
7. F/BR with index invalid in current DB 2.3%
8. NS of SHOW/EXP command-no next screen 2.1%
9. DISPLAY command-first of >1 screen 2.1%
10. KW search in database w/o KW index 1.8%
11. All others 32.6%
Ten most frequent SHOW requests:
1. HISTORY 52.8%
2. SEARCH 10.6%
3. GLOSSARY 4.6%
4. TERMINAL 4.2%
5. SETTINGS 3.7%
6. PSYCINFO NEWS 2.8%
7. TIME 2.8%
8. BIBLIOGRAPHIC SOFTWARE 2.3%
9. NEWS 2.3%
10. TIMEOUT SETTING 2.3%
11. All others 11.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)