MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 11/01/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,158 9,160 12,318
Davis 7,312 904 8,216
Irvine 2,184 0 2,184
Los Angeles 44 2,007 2,051
Riverside 1,659 402 2,061
San Diego 1,264 635 1,899
San Francisco 871 0 871
Santa Barbara 1,004 456 1,460
Santa Cruz 859 561 1,420
LBL 0 327 327
LLL 0 297 297
Other - UC 111 1,104 1,215
CSL 0 547 547
CSU n/a 627 627
Other-Non UC n/a 15,524 15,524
_______ ______ _____
18,466 32,551 51,017
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 996 3,057 23,677
2-4 a.m. 911 2,845 26,260
4-6 a.m. 834 2,705 21,103
6-8 a.m. 1,706 4,888 36,346
8-10 a.m. 6,226 20,431 141,583
10-12 a.m. 9,517 36,196 252,024
12-2 p.m. 9,095 31,661 224,538
2-4 p.m. 10,035 35,705 249,787
4-6 p.m. 6,332 21,213 149,866
6-8 p.m. 2,400 7,624 64,577
8-10 p.m. 1,577 4,040 37,981
10-12 p.m. 1,388 3,737 33,692
__________ __________ __________ _________________
Total: 51,017 174,102 1,261,434
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,369 26,424 34,793
Davis 28,317 3,726 32,043
Irvine 9,237 0 9,237
Los Angeles 473 4,711 5,184
Riverside 5,945 940 6,885
San Diego 3,720 1,489 5,209
San Francisco 1,399 0 1,399
Santa Barbara 5,378 1,032 6,410
Santa Cruz 8,939 1,562 10,501
LBL 0 366 366
LLL 0 803 803
Other - UC 153 3,336 3,489
CSL 0 658 658
CSU n/a 2,254 2,254
Other-Non UC n/a 54,871 54,871
_______ ______ _____
71,930 102,172 174,102
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 67,363 210,315 277,678
Davis 165,084 18,619 183,703
Irvine 57,744 0 57,744
Los Angeles 1,614 35,382 36,996
Riverside 45,146 7,005 52,151
San Diego 20,678 13,019 33,697
San Francisco 9,396 0 9,396
Santa Barbara 45,882 10,764 56,646
Santa Cruz 24,697 14,762 39,459
LBL 0 2,862 2,862
LLL 0 7,734 7,734
Other - UC 799 27,791 28,590
CSL 0 5,590 5,590
CSU n/a 28,478 28,478
Other-Non UC n/a 440,710 440,710
_______ ______ _____
438,403 823,031 1,261,434
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 3.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.1
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 763:22
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 62.9
Retrievals per search - standard deviation 980.3
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 65.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 167,575 35.8%
DISPLAY (excluding automatic displays) 152,358 32.5%
ACFIND 29 0.0%
BROWSE 1,178 0.3%
SELECT 719 0.2%
HELP 3,500 0.7%
EXPLAIN 3,378 0.7%
SET/RESET 11,771 2.5%
SHOW 991 0.2%
AT 10,761 2.3%
ADD ON (AND, OR, AND NOT) 6,441 1.4%
LOGON or LOGOFF 84,117 18.0%
COMMENT 2 0.0%
SAVE 2,839 0.6%
USE 3,450 0.7%
OTHER 19,153 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 25,142 14.3% 5,884 23.4% 10 85.0 417.0
AUTHOR 6,277 3.6% 1,555 24.8% 11 97.3 381.8
CORPORATE AUTH 1,896 1.1% 703 37.1% 15 814.8 7609.6
EXACT CA 75 0.0% 27 36.0% 6 306.1 1197.7
TITLE WORD 38,708 22.0% 12,406 32.0% 4 45.3 478.6
EXACT TITLE 29,662 16.9% 8,084 27.3% 2 20.4 130.0
TITLE -> TW 4,383 2.5% 1,069 24.4% 8 89.8 1676.8
TITLE -> XT 5,343 3.0% 2,376 44.5% 2 10.2 98.9
SUBJECT 9,581 5.5% 3,421 35.7% 46 455.1 2740.7
EXACT SUBJECT 674 0.4% 167 24.8% 106 544.2 1156.9
PERIODICAL 30,107 17.1% 6,151 20.4% 4 74.5 901.3
EXACT PE 11,743 6.7% 1,786 15.2% 3 23.9 269.3
RPE 12 0.0% 6 50.0% 8 7.8 3.4
XRP 11 0.0% 4 36.4% 4 4.3 2.2
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 291 0.2% 45 15.5% 47 755.8 6073.2
DATE 2,631 1.5% 595 22.6% 4 99.4 1445.1
FORM 1,645 0.9% 341 20.7% 18 255.9 2424.6
NUMBER* 137 0.1% 68 49.6% 2 595.5 3298.9
MUSIC* 30 0.0% 14 46.7% 98 1223.1 2314.1
SERIES 3,592 2.0% 1,132 31.5% 4 116.3 1076.5
UNIFORM TITLE 33 0.0% 9 27.3% 75 789.3 1362.7
Other indexes 3,647 2.1% 1,498 41.1% 1 14.1 85.8
* 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 9,637 5.8% 2,482 25.8% 4 98.7 1627.2
Single 155,573 94.2% 42,243 27.2% 4 86.2 1129.7
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 50 4.6% 6 12.0% 5 27.2 52.6
CORPORATE AUTH 4 0.4% 2 50.0% 63 63.0 1.4
EXACT CA 2 0.2% 1 50.0% 33 33.0 0.0
SUBJECT 977 89.1% 207 21.2% 44 182.6 782.0
EXACT SUBJECT 50 4.6% 2 4.0% 30 79.4 227.6
UNIFORM TITLE 3 0.3% 0 0.0% 49 119.7 165.7
SERIES 10 0.9% 1 10.0% 8 27.1 44.7
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,117 100% 222 19.9% 33 164.1 728.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.5%
BRIEF 67.4%
LONG 9.9%
MARC 4.3%
FIELDS 2.8%
TAG 2.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.6%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.1%
Ten most frequent errors:
1. NS command - no next screen 29.1%
2. First word of command is invalid 24.6%
3. FIND command with invalid index name 11.3%
4. Max. # of ports to a Z39 db are in use 10.3%
5. DISPLAY command contains invalid word 3.5%
6. Search term missing from search command 2.3%
7. PS command - no previous screen 1.9%
8. KW search in database w/o KW index 1.5%
9. Valid command at an inappropriate time 1.5%
10. DISPLAY command - no FIND results 1.3%
11. All others 12.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.7%
2. FIND 13.7%
3. COMMAND WORDS 6.8%
4. INDEXES 5.6%
5. Unrecognized term 5.0%
6. PASSWORDS 4.7%
7. DISPLAY 2.4%
8. DATABASES 2.0%
9. CATALOG 2.0%
10. ADD-ON SEARCH 1.5%
11. All others 28.6%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.8%
2. First word of command is invalid 15.3%
3. FIND command with invalid index name 13.0%
4. DISPLAY command - middle of >1 screen 4.1%
5. DISPLAY command-first of >1 screen 3.5%
6. NS command - no next screen 2.7%
7. FIND command retrieves >1 book 2.7%
8. Help requested from SET DB command 2.1%
9. DISPLAY command-complete in one screen 2.1%
10. DISPLAY command - last of >1 screen 2.0%
11. All others 28.8%
Ten most frequent SHOW requests:
1. HISTORY 43.4%
2. SEARCH 10.8%
3. GLOSSARY 8.7%
4. SETTINGS 6.3%
5. TIME 4.5%
6. DATABASE NEWS 3.0%
7. MEDLINE NEWS 2.6%
8. NEWS 2.1%
9. MAIL STATUS 1.8%
10. SYSTEMS INFORMATION 1.6%
11. All others 15.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)