MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/01/01 through 02/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,995 10,937 14,932
Davis 8,385 944 9,329
Irvine 3,306 0 3,306
Los Angeles 477 2,483 2,960
Riverside 2,642 459 3,101
San Diego 1,890 906 2,796
San Francisco 1,227 0 1,227
Santa Barbara 2,034 1,176 3,210
Santa Cruz 1,636 971 2,607
LBL 0 471 471
LLL 0 325 325
Other - UC 139 1,028 1,167
CSL 0 637 637
CSU n/a 817 817
Other-Non UC n/a 17,318 17,318
_______ ______ _____
25,731 38,472 64,203
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 911 2,961 27,022
2-4 a.m. 669 2,154 20,542
4-6 a.m. 677 2,172 18,590
6-8 a.m. 1,739 4,973 37,763
8-10 a.m. 7,735 24,810 190,682
10-12 a.m. 12,430 42,144 315,571
12-2 p.m. 11,659 39,445 287,604
2-4 p.m. 12,857 44,220 319,670
4-6 p.m. 8,836 28,532 219,397
6-8 p.m. 3,235 9,925 80,863
8-10 p.m. 1,978 6,057 50,411
10-12 p.m. 1,477 4,542 38,405
__________ __________ __________ _________________
Total: 64,203 211,935 1,606,520
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,796 29,965 41,761
Davis 31,954 3,732 35,686
Irvine 13,009 0 13,009
Los Angeles 1,130 5,905 7,035
Riverside 8,813 1,168 9,981
San Diego 5,737 1,496 7,233
San Francisco 2,236 0 2,236
Santa Barbara 6,491 2,605 9,096
Santa Cruz 8,345 3,233 11,578
LBL 0 658 658
LLL 0 934 934
Other - UC 153 3,453 3,606
CSL 0 1,647 1,647
CSU n/a 3,485 3,485
Other-Non UC n/a 63,990 63,990
_______ ______ _____
89,664 122,271 211,935
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 94,776 233,193 327,969
Davis 217,502 18,078 235,580
Irvine 80,458 0 80,458
Los Angeles 8,663 53,205 61,868
Riverside 73,938 10,265 84,203
San Diego 31,929 16,009 47,938
San Francisco 16,004 0 16,004
Santa Barbara 52,354 24,812 77,166
Santa Cruz 38,342 20,366 58,708
LBL 0 7,779 7,779
LLL 0 9,476 9,476
Other - UC 1,295 26,809 28,104
CSL 0 13,483 13,483
CSU n/a 37,303 37,303
Other-Non UC n/a 520,481 520,481
_______ ______ _____
615,261 991,259 1,606,520
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 4.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.4
Standard deviation in seconds 1.5
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 584:47
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 66.0
Retrievals per search - standard deviation 1142.8
Percent of searches completed with 0 results 27.7%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 62.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 205,523 35.3%
DISPLAY (excluding automatic displays) 189,980 32.6%
ACFIND 65 0.0%
BROWSE 1,775 0.3%
SELECT 1,011 0.2%
HELP 4,928 0.8%
EXPLAIN 5,038 0.9%
SET/RESET 15,941 2.7%
SHOW 1,613 0.3%
AT 12,099 2.1%
ADD ON (AND, OR, AND NOT) 6,284 1.1%
LOGON or LOGOFF 102,514 17.6%
COMMENT 36 0.0%
SAVE 4,660 0.8%
USE 5,179 0.9%
OTHER 25,555 4.4%
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 33,941 15.6% 8,581 25.3% 10 90.9 480.2
AUTHOR 9,561 4.4% 2,315 24.2% 13 102.0 355.6
CORPORATE AUTH 2,096 1.0% 792 37.8% 24 655.8 3498.5
EXACT CA 47 0.0% 17 36.2% 60 537.9 1037.3
TITLE WORD 53,186 24.5% 17,108 32.2% 4 47.2 558.7
EXACT TITLE 31,956 14.7% 9,313 29.1% 2 25.9 295.7
TITLE -> TW 4,685 2.2% 1,191 25.4% 9 58.9 223.7
TITLE -> XT 5,410 2.5% 2,572 47.5% 1 14.3 130.1
SUBJECT 13,229 6.1% 5,067 38.3% 46 459.8 4574.7
EXACT SUBJECT 812 0.4% 244 30.0% 60 386.0 1212.4
PERIODICAL 35,295 16.2% 7,267 20.6% 4 82.0 1091.4
EXACT PE 13,901 6.4% 2,158 15.5% 3 34.5 802.2
RPE 16 0.0% 11 68.8% 11 36.2 62.1
XRP 5 0.0% 1 20.0% 15 175.0 327.4
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 431 0.2% 84 19.5% 68 271.9 866.2
DATE 2,725 1.3% 734 26.9% 4 60.4 358.9
FORM 2,540 1.2% 606 23.9% 17 180.5 860.6
NUMBER* 228 0.1% 58 25.4% 1 12.5 94.2
MUSIC* 86 0.0% 54 62.8% 4 65.8 244.5
SERIES 4,449 2.0% 1,492 33.5% 3 84.6 1347.2
UNIFORM TITLE 66 0.0% 26 39.4% 24 175.1 653.2
Other indexes 2,709 1.2% 1,213 44.8% 1 17.8 109.6
* 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 14,456 7.2% 4,480 31.0% 3 62.5 447.2
Single 187,633 92.8% 51,758 27.6% 5 93.2 1366.8
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 215 13.1% 45 20.9% 7 52.4 94.7
CORPORATE AUTH 9 0.5% 1 11.1% 7 87.1 211.1
EXACT CA 4 0.2% 1 25.0% 133 113.7 97.4
SUBJECT 1,170 71.3% 272 23.2% 39 141.7 521.2
EXACT SUBJECT 237 14.4% 54 22.8% 39 181.3 475.6
UNIFORM TITLE 4 0.2% 4 100% 0 0.0 0.0
SERIES 2 0.1% 2 100% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,677 100% 383 22.8% 33 132.8 472.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.0%
BRIEF 67.6%
LONG 10.7%
MARC 2.8%
FIELDS 2.9%
TAG 2.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 28.8%
2. First word of command is invalid 27.1%
3. FIND command with invalid index name 12.2%
4. DISPLAY command contains invalid word 4.6%
5. Search term missing from search command 2.4%
6. Max. # of ports to a Z39 db are in use 2.2%
7. KW search in database w/o KW index 2.1%
8. PS command - no previous screen 1.9%
9. DISPLAY command - no FIND results 1.7%
10. Valid command at an inappropriate time 1.6%
11. All others 15.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.9%
2. FIND 14.5%
3. INDEXES 6.8%
4. COMMAND WORDS 6.1%
5. Unrecognized term 5.0%
6. PASSWORDS 3.9%
7. DISPLAY 2.4%
8. CATALOG 2.0%
9. DATABASES 1.9%
10. ADD-ON SEARCH 1.7%
11. All others 28.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.2%
2. First word of command is invalid 14.4%
3. FIND command with invalid index name 12.1%
4. DISPLAY command - middle of >1 screen 4.6%
5. FIND command retrieves >1 book 3.0%
6. DISPLAY command-first of >1 screen 2.7%
7. NS command - no next screen 2.5%
8. DISPLAY command-complete in one screen 2.1%
9. Help requested from SET DB command 2.0%
10. TW search with zero results 1.9%
11. All others 31.4%
Ten most frequent SHOW requests:
1. HISTORY 37.0%
2. TIME 15.3%
3. SEARCH 11.1%
4. GLOSSARY 7.4%
5. NEWS 4.9%
6. BOOK STATISTICS 3.4%
7. STATISTICS 3.4%
8. SETTINGS 2.8%
9. MAIL STATUS 1.9%
10. SYSTEM NEWS 1.8%
11. All others 11.1%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)