MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 01/26/02 through 02/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 572 2,141 2,713
Davis 1,560 171 1,731
Irvine 376 0 376
Los Angeles 8 387 395
Riverside 293 103 396
San Diego 325 106 431
San Francisco 140 0 140
Santa Barbara 308 124 432
Santa Cruz 163 202 365
LBL 0 75 75
LLL 0 65 65
Other - UC 49 204 253
CSL 0 147 147
CSU n/a 111 111
Other-Non-UC n/a 3,599 3,599
_______ ______ _____
3,794 7,435 11,229
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 227 609 8,264
2-4 a.m. 133 392 2,599
4-6 a.m. 138 344 2,885
6-8 a.m. 376 908 7,875
8-10 a.m. 1,460 5,020 54,409
10-12 a.m. 2,266 9,191 74,557
12-2 p.m. 2,076 7,887 54,985
2-4 p.m. 2,228 8,337 63,306
4-6 p.m. 1,291 4,695 38,305
6-8 p.m. 506 1,903 16,130
8-10 p.m. 276 831 8,053
10-12 p.m. 252 780 6,868
__________ __________ __________ _________________
Total: 11,229 40,897 338,236
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,465 7,076 8,541
Davis 6,611 894 7,505
Irvine 2,076 0 2,076
Los Angeles 17 848 865
Riverside 1,422 359 1,781
San Diego 1,016 260 1,276
San Francisco 435 0 435
Santa Barbara 1,449 355 1,804
Santa Cruz 1,382 606 1,988
LBL 0 93 93
LLL 0 209 209
Other - UC 15 508 523
CSL 0 237 237
CSU n/a 418 418
Other-Non-UC n/a 13,146 13,146
_______ ______ _____
15,888 25,009 40,897
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 14,712 61,263 75,975
Davis 47,773 5,120 52,893
Irvine 13,362 0 13,362
Los Angeles 49 7,809 7,858
Riverside 10,963 7,327 18,290
San Diego 8,705 2,086 10,791
San Francisco 2,536 0 2,536
Santa Barbara 10,732 3,388 14,120
Santa Cruz 4,332 5,072 9,404
LBL 0 807 807
LLL 0 3,617 3,617
Other - UC 209 5,256 5,465
CSL 0 1,988 1,988
CSU n/a 3,527 3,527
Other-Non-UC n/a 117,603 117,603
_______ ______ _____
113,373 224,863 338,236
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 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 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:59
Average session length (minutes:seconds) 15:20
Longest session recorded (minutes:seconds) 903:36
Average number of searches completed per session 3.6
Retrievals per search - median 2.0
Retrievals per search - average 58.7
Retrievals per search - standard deviation 910.3
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 65.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 39,488 35.7%
DISPLAY (excluding automatic displays) 37,691 34.0%
ACFIND 4 0.0%
BROWSE 180 0.2%
SELECT 130 0.1%
HELP 715 0.6%
EXPLAIN 645 0.6%
SET/RESET 2,041 1.8%
SHOW 237 0.2%
AT 2,948 2.7%
ADD ON (AND, OR, AND NOT) 1,398 1.3%
LOGON or LOGOFF 19,554 17.7%
COMMENT 3 0.0%
SAVE 575 0.5%
USE 697 0.6%
OTHER 4,406 4.0%
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 5,779 14.1% 1,385 24.0% 11 73.1 295.7
AUTHOR 1,608 3.9% 388 24.1% 10 98.3 335.3
CORPORATE AUTH 452 1.1% 146 32.3% 16 248.7 780.3
EXACT CA 5 0.0% 4 80.0% 6 6.0 0.0
TITLE WORD 9,587 23.4% 3,095 32.3% 5 47.4 327.3
EXACT TITLE 5,464 13.3% 1,603 29.3% 2 27.9 152.4
TITLE -> TW 1,043 2.5% 261 25.0% 10 54.2 202.3
TITLE -> XT 1,186 2.9% 548 46.2% 2 13.5 120.8
SUBJECT 1,753 4.3% 531 30.3% 66 439.0 1542.3
EXACT SUBJECT 119 0.3% 18 15.1% 31 477.0 1265.0
PERIODICAL 7,858 19.2% 1,580 20.1% 5 70.5 699.9
EXACT PE 3,120 7.6% 503 16.1% 3 17.9 104.9
RPE 4 0.0% 2 50.0% 13 12.5 10.6
XRP 1 0.0% 0 0.0% 15 15.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 54 0.1% 6 11.1% 89 482.9 1098.0
DATE 494 1.2% 89 18.0% 4 61.7 441.4
FORM 337 0.8% 66 19.6% 21 228.9 716.2
NUMBER* 12 0.0% 7 58.3% 3 994.0 2218.2
MUSIC* 10 0.0% 4 40.0% 666 693.3 704.9
SERIES 1,128 2.8% 328 29.1% 5 297.1 5633.8
UNIFORM TITLE 14 0.0% 3 21.4% 85 169.8 238.7
Other indexes 966 2.4% 395 40.9% 1 20.0 199.3
* 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 1,913 4.9% 485 25.4% 4 80.6 450.9
Single 37,042 95.1% 9,967 26.9% 5 80.6 1104.0
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 9 5.5% 0 0.0% 86 109.8 152.2
CORPORATE AUTH 5 3.0% 1 20.0% 271 228.0 167.8
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 146 88.5% 34 23.3% 41 128.4 247.7
EXACT SUBJECT 5 3.0% 0 0.0% 3 3.8 1.9
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 170 100% 35 20.6% 35 122.5 232.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.5%
BRIEF 64.8%
LONG 9.3%
MARC 4.0%
FIELDS 3.5%
TAG 3.5%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.2%
Ten most frequent errors:
1. NS command - no next screen 33.5%
2. First word of command is invalid 25.2%
3. FIND command with invalid index name 11.8%
4. DISPLAY command contains invalid word 4.1%
5. Search term missing from search command 2.5%
6. DISPLAY command - no FIND results 1.9%
7. PS command - no previous screen 1.6%
8. NS of SHOW/EXP command-no next screen 1.5%
9. KW search in database w/o KW index 1.3%
10. Valid command at an inappropriate time 1.2%
11. All others 15.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.8%
2. FIND 10.9%
3. INDEXES 6.5%
4. COMMAND WORDS 5.3%
5. Unrecognized term 4.8%
6. PASSWORDS 3.3%
7. LOCATE (PE DB) 2.5%
8. DISPLAY 2.3%
9. NRLF 2.0%
10. ADD-ON SEARCH 1.6%
11. All others 32.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.5%
2. First word of command is invalid 14.0%
3. FIND command with invalid index name 12.0%
4. DISPLAY command-first of >1 screen 3.4%
5. DISPLAY command - middle of >1 screen 3.4%
6. DISPLAY command-complete in one screen 2.7%
7. F/BR with index invalid in current DB 2.4%
8. TW search with zero results 2.1%
9. NS command - no next screen 2.0%
10. FIND command retrieves 1 book 1.9%
11. All others 32.6%
Ten most frequent SHOW requests:
1. HISTORY 54.2%
2. GLOSSARY 8.1%
3. SEARCH 7.2%
4. SETTINGS 6.4%
5. DATABASE NEWS 5.5%
6. MAIL STATUS 3.0%
7. STATISTICS 2.5%
8. NEWS 2.1%
9. PE LOADING STATISTICS 1.7%
10. SYSTEMS INFORMATION 1.7%
11. All others 7.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)