MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/01/01 through 05/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,909 10,546 13,455
Davis 9,170 1,131 10,301
Irvine 3,580 0 3,580
Los Angeles 88 2,673 2,761
Riverside 2,595 447 3,042
San Diego 1,763 870 2,633
San Francisco 1,304 0 1,304
Santa Barbara 1,512 955 2,467
Santa Cruz 1,432 840 2,272
LBL 0 394 394
LLL 0 333 333
Other - UC 160 844 1,004
CSL 0 686 686
CSU n/a 529 529
Other-Non UC n/a 19,655 19,655
_______ ______ _____
24,513 39,903 64,416
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,307 4,308 34,514
2-4 a.m. 966 3,430 70,538
4-6 a.m. 1,026 3,283 28,885
6-8 a.m. 2,247 8,931 73,444
8-10 a.m. 8,176 26,776 203,362
10-12 a.m. 11,921 40,224 311,995
12-2 p.m. 11,328 37,126 280,143
2-4 p.m. 12,493 42,149 300,686
4-6 p.m. 7,988 27,059 210,032
6-8 p.m. 2,885 8,756 48,094
8-10 p.m. 2,250 6,823 54,168
10-12 p.m. 1,829 4,830 42,759
__________ __________ __________ _________________
Total: 64,416 213,695 1,658,620
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,009 39,479 47,488
Davis 31,767 4,349 36,116
Irvine 13,168 0 13,168
Los Angeles 225 7,365 7,590
Riverside 9,327 1,096 10,423
San Diego 4,635 1,662 6,297
San Francisco 2,326 0 2,326
Santa Barbara 5,143 2,129 7,272
Santa Cruz 6,181 2,752 8,933
LBL 0 667 667
LLL 0 948 948
Other - UC 185 2,322 2,507
CSL 0 1,262 1,262
CSU n/a 2,556 2,556
Other-Non UC n/a 66,142 66,142
_______ ______ _____
80,966 132,729 213,695
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 62,695 322,755 385,450
Davis 219,574 24,009 243,583
Irvine 93,382 0 93,382
Los Angeles 1,680 55,864 57,544
Riverside 62,419 12,356 74,775
San Diego 32,612 12,616 45,228
San Francisco 16,692 0 16,692
Santa Barbara 54,461 17,847 72,308
Santa Cruz 33,633 22,635 56,268
LBL 0 7,798 7,798
LLL 0 9,730 9,730
Other - UC 1,074 15,454 16,528
CSL 0 9,123 9,123
CSU n/a 24,720 24,720
Other-Non UC n/a 545,491 545,491
_______ ______ _____
578,222 1,080,398 1,658,620
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 3.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.0
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1144
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 65.9
Retrievals per search - standard deviation 1084.0
Percent of searches completed with 0 results 27.2%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 64.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 206,553 35.6%
DISPLAY (excluding automatic displays) 191,892 33.1%
ACFIND 81 0.0%
BROWSE 1,102 0.2%
SELECT 763 0.1%
HELP 3,626 0.6%
EXPLAIN 3,902 0.7%
SET/RESET 16,836 2.9%
SHOW 1,214 0.2%
AT 12,275 2.1%
ADD ON (AND, OR, AND NOT) 7,014 1.2%
LOGON or LOGOFF 102,329 17.6%
COMMENT 0 0.0%
SAVE 4,275 0.7%
USE 4,368 0.8%
OTHER 24,188 4.2%
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 32,859 15.2% 7,723 23.5% 11 87.4 532.9
AUTHOR 8,567 4.0% 2,193 25.6% 14 122.2 505.3
CORPORATE AUTH 2,151 1.0% 848 39.4% 21 638.4 4246.2
EXACT CA 63 0.0% 22 34.9% 20 284.3 727.1
TITLE WORD 50,409 23.3% 16,021 31.8% 4 58.0 1416.5
EXACT TITLE 35,732 16.5% 10,081 28.2% 2 20.9 259.1
TITLE -> TW 5,054 2.3% 1,391 27.5% 8 63.3 710.9
TITLE -> XT 5,906 2.7% 2,728 46.2% 1 6.8 50.0
SUBJECT 10,480 4.8% 3,698 35.3% 49 489.6 3234.7
EXACT SUBJECT 657 0.3% 145 22.1% 43 352.8 879.8
PERIODICAL 35,995 16.6% 7,358 20.4% 4 77.3 1044.3
EXACT PE 14,061 6.5% 2,677 19.0% 3 27.0 375.9
RPE 16 0.0% 4 25.0% 8 27.8 42.0
XRP 1 0.0% 0 0.0% 12 12.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 354 0.2% 61 17.2% 58 592.7 4152.2
DATE 3,073 1.4% 721 23.5% 3 135.9 2178.5
FORM 2,607 1.2% 572 21.9% 9 271.3 2711.5
NUMBER* 185 0.1% 72 38.9% 2 143.9 877.3
MUSIC* 132 0.1% 78 59.1% 4 162.2 756.8
SERIES 4,928 2.3% 1,574 31.9% 3 77.9 679.4
UNIFORM TITLE 35 0.0% 15 42.9% 28 461.8 1019.2
Other indexes 3,119 1.4% 1,239 39.7% 1 36.8 582.1
* 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 12,074 5.9% 3,377 28.0% 3 68.1 832.9
Single 191,626 94.1% 52,342 27.3% 5 91.7 1286.0
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 142 14.6% 37 26.1% 5 34.1 89.3
CORPORATE AUTH 9 0.9% 4 44.4% 67 50.4 40.7
EXACT CA 2 0.2% 1 50.0% 20 20.0 0.0
SUBJECT 734 75.4% 146 19.9% 36 320.4 2459.2
EXACT SUBJECT 81 8.3% 16 19.8% 28 116.9 191.9
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 6 0.6% 2 33.3% 14 14.8 14.2
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,046 100% 219 20.9% 22 245.0 2077.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.8%
BRIEF 65.9%
LONG 9.8%
MARC 3.7%
FIELDS 2.6%
TAG 3.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.1%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.3%
Ten most frequent errors:
1. NS command - no next screen 30.9%
2. First word of command is invalid 25.5%
3. FIND command with invalid index name 11.1%
4. DISPLAY command contains invalid word 4.7%
5. Max. # of ports to a Z39 db are in use 3.1%
6. Search term missing from search command 2.4%
7. KW search in database w/o KW index 2.1%
8. PS command - no previous screen 2.0%
9. DISPLAY command - no FIND results 1.8%
10. Valid command at an inappropriate time 1.5%
11. All others 15.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.7%
2. FIND 14.4%
3. INDEXES 6.8%
4. COMMAND WORDS 5.5%
5. Unrecognized term 4.8%
6. PASSWORDS 3.6%
7. DISPLAY 2.4%
8. DATABASES 2.4%
9. CATALOG 1.6%
10. ADD-ON SEARCH 1.6%
11. All others 29.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.9%
2. First word of command is invalid 13.9%
3. FIND command with invalid index name 11.5%
4. DISPLAY command - middle of >1 screen 4.3%
5. DISPLAY command-first of >1 screen 3.1%
6. NS command - no next screen 2.7%
7. DISPLAY command-complete in one screen 2.5%
8. FIND command retrieves >1 book 2.2%
9. TW search with zero results 2.0%
10. F/BR with index invalid in current DB 1.9%
11. All others 31.0%
Ten most frequent SHOW requests:
1. HISTORY 52.0%
2. MAIL STATUS 10.2%
3. GLOSSARY 8.0%
4. SEARCH 7.6%
5. SETTINGS 4.2%
6. DATABASE NEWS 2.0%
7. SYSTEMS INFORMATION 1.1%
8. SYSTEM NEWS 1.0%
9. NEWS 0.8%
10. UCSF PASSWORDS 0.6%
11. All others 12.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)