MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/01/00 through 02/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,997 14,230 21,227
Davis 13,569 1,944 15,513
Irvine 5,777 0 5,777
Los Angeles 1,999 6,433 8,432
Riverside 4,061 770 4,831
San Diego 2,466 1,369 3,835
San Francisco 2,081 0 2,081
Santa Barbara 3,870 2,254 6,124
Santa Cruz 4,218 1,779 5,997
LBL 0 565 565
LLL 0 537 537
Other - UC 448 1,419 1,867
CSL 0 813 813
CSU n/a 1,155 1,155
Other-Non UC n/a 25,646 25,646
_______ ______ _____
45,486 58,914 104,400
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,623 9,061 48,118
2-4 a.m. 1,404 7,826 52,199
4-6 a.m. 1,143 5,000 34,110
6-8 a.m. 2,633 8,874 74,621
8-10 a.m. 11,323 40,575 306,974
10-12 a.m. 18,752 66,292 489,927
12-2 p.m. 19,524 69,239 555,351
2-4 p.m. 21,870 74,730 563,413
4-6 p.m. 14,053 47,930 355,729
6-8 p.m. 5,818 20,765 162,674
8-10 p.m. 3,636 13,572 97,015
10-12 p.m. 2,621 11,431 64,055
__________ __________ __________ _________________
Total: 104,400 375,295 2,804,186
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 20,162 47,027 67,189
Davis 45,219 8,447 53,666
Irvine 16,958 0 16,958
Los Angeles 6,840 17,095 23,935
Riverside 14,167 2,069 16,236
San Diego 6,735 2,301 9,036
San Francisco 3,841 0 3,841
Santa Barbara 17,320 6,060 23,380
Santa Cruz 18,082 7,029 25,111
LBL 0 1,003 1,003
LLL 0 1,397 1,397
Other - UC 424 21,237 21,661
CSL 0 2,307 2,307
CSU n/a 5,268 5,268
Other-Non UC n/a 104,307 104,307
_______ ______ _____
149,748 225,547 375,295
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 172,924 411,222 584,146
Davis 309,532 41,830 351,362
Irvine 115,497 0 115,497
Los Angeles 50,423 178,907 229,330
Riverside 117,607 23,496 141,103
San Diego 44,271 23,748 68,019
San Francisco 28,600 0 28,600
Santa Barbara 141,240 52,700 193,940
Santa Cruz 82,165 40,010 122,175
LBL 0 8,537 8,537
LLL 0 12,018 12,018
Other - UC 2,334 45,756 48,090
CSL 0 11,403 11,403
CSU n/a 47,461 47,461
Other-Non UC n/a 842,505 842,505
_______ ______ _____
1,064,593 1,739,593 2,804,186
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 986:27
Average number of searches completed per session 3.5
Retrievals per search - median 2.0
Retrievals per search - average 77.6
Retrievals per search - standard deviation 1040.5
Percent of searches completed with 0 results 26.4%
Percent of searches entered that are long 4.4%
Percent of long searches completed
(includes partial results) 57.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 359,910 36.4%
DISPLAY (excluding automatic displays) 304,922 30.9%
ACFIND 61 0.0%
BROWSE 3,093 0.3%
SELECT 1,633 0.2%
HELP 12,436 1.3%
EXPLAIN 11,652 1.2%
SET/RESET 21,257 2.2%
SHOW 3,243 0.3%
AT 19,752 2.0%
ADD ON (AND, OR, AND NOT) 15,236 1.5%
LOGON or LOGOFF 172,595 17.5%
COMMENT 12 0.0%
SAVE 7,492 0.8%
USE 7,911 0.8%
OTHER 46,171 4.7%
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 53,878 14.4% 12,972 24.1% 12 110.1 1050.2
AUTHOR 16,863 4.5% 4,135 24.5% 15 129.6 521.1
CORPORATE AUTH 3,371 0.9% 1,278 37.9% 22 613.1 3228.4
EXACT CA 110 0.0% 52 47.3% 120 650.7 1041.5
TITLE WORD 93,066 24.9% 27,769 29.8% 5 48.0 409.9
EXACT TITLE 54,680 14.7% 13,609 24.9% 2 23.7 183.4
TITLE -> TW 8,981 2.4% 2,180 24.3% 10 62.6 255.9
TITLE -> XT 10,723 2.9% 4,204 39.2% 1 12.0 124.4
SUBJECT 28,951 7.8% 11,582 40.0% 51 414.6 2671.8
EXACT SUBJECT 1,354 0.4% 495 36.6% 91 585.2 2773.9
PERIODICAL 60,035 16.1% 12,045 20.1% 5 124.8 1472.1
EXACT PE 19,823 5.3% 3,008 15.2% 3 22.6 168.9
RPE 43 0.0% 17 39.5% 19 101.5 186.2
XRP 13 0.0% 2 15.4% 3 6.6 7.6
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1,060 0.3% 216 20.4% 34 573.2 7284.3
DATE 4,768 1.3% 1,139 23.9% 4 92.6 801.4
FORM 4,203 1.1% 1,113 26.5% 16 442.8 2638.4
NUMBER* 507 0.1% 212 41.8% 3 146.6 1162.3
MUSIC* 76 0.0% 51 67.1% 22 46.2 56.6
SERIES 6,461 1.7% 2,272 35.2% 5 109.9 1444.0
UNIFORM TITLE 119 0.0% 37 31.1% 56 710.6 1227.9
Other indexes 4,106 1.1% 1,695 41.3% 1 36.4 258.6
* 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 19,013 5.4% 5,440 28.6% 4 79.3 655.9
Single 333,682 94.6% 88,807 26.6% 5 109.4 1259.2
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 331 11.3% 69 20.8% 5 24.5 64.4
CORPORATE AUTH 22 0.8% 8 36.4% 34 67.1 77.5
EXACT CA 4 0.1% 2 50.0% 9 8.5 0.7
SUBJECT 2,296 78.4% 603 26.3% 34 137.5 779.4
EXACT SUBJECT 232 7.9% 68 29.3% 39 131.8 200.4
UNIFORM TITLE 7 0.2% 0 0.0% 4 49.3 115.5
SERIES 35 1.2% 4 11.4% 5 44.6 91.3
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 2,954 100% 759 25.7% 25 120.4 688.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.7%
BRIEF 72.1%
LONG 10.0%
MARC 3.4%
FIELDS 2.1%
TAG 1.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. First word of command is invalid 28.3%
2. NS command - no next screen 26.8%
3. FIND command with invalid index name 12.8%
4. DISPLAY command contains invalid word 3.4%
5. KW search in database w/o KW index 3.1%
6. Search term missing from search command 2.6%
7. PS command - no previous screen 1.9%
8. Valid command at an inappropriate time 1.7%
9. DISPLAY command - no FIND results 1.6%
10. Index invalid in current database 1.3%
11. All others 16.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.2%
2. FIND 13.2%
3. INDEXES 6.7%
4. COMMAND WORDS 6.5%
5. Unrecognized term 5.5%
6. PASSWORDS 3.5%
7. DATABASES 3.3%
8. DISPLAY 2.3%
9. CATALOG 2.0%
10. LOCATE (PE DB) 1.6%
11. All others 30.0%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 21.3%
2. First word of command is invalid 15.6%
3. FIND command with invalid index name 11.8%
4. DISPLAY command - middle of >1 screen 4.2%
5. FIND command retrieves >1 book 3.0%
6. NS command - no next screen 2.7%
7. DISPLAY command-first of >1 screen 2.6%
8. KW search in database w/o KW index 2.6%
9. TW search with zero results 2.3%
10. DISPLAY command-complete in one screen 2.2%
11. All others 31.8%
Ten most frequent SHOW requests:
1. HISTORY 31.9%
2. SEARCH 14.1%
3. GLOSSARY 9.2%
4. SYSTEMS INFORMATION 6.0%
5. TIME 5.7%
6. SYSTEM NEWS 5.6%
7. SETTINGS 4.1%
8. MAIL STATUS 3.8%
9. DATABASE NEWS 1.2%
10. LIBRARY NEWS 1.2%
11. All others 17.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)