MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 11/18/00 through 11/24/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 895 1,985 2,880
Davis 1,644 295 1,939
Irvine 716 0 716
Los Angeles 105 583 688
Riverside 583 75 658
San Diego 336 182 518
San Francisco 235 0 235
Santa Barbara 337 255 592
Santa Cruz 267 166 433
LBL 0 69 69
LLL 0 64 64
Other - UC 23 194 217
CSL 0 104 104
CSU n/a 98 98
Other-Non-UC n/a 3,645 3,645
_______ ______ _____
5,141 7,715 12,856
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 257 890 10,883
2-4 a.m. 194 830 5,124
4-6 a.m. 194 639 3,562
6-8 a.m. 364 1,224 10,060
8-10 a.m. 1,405 4,486 32,519
10-12 a.m. 2,339 7,610 62,791
12-2 p.m. 2,309 7,297 52,675
2-4 p.m. 2,733 9,031 69,822
4-6 p.m. 1,613 4,803 41,042
6-8 p.m. 651 1,733 14,539
8-10 p.m. 461 1,222 8,778
10-12 p.m. 336 1,061 8,637
__________ __________ __________ _________________
Total: 12,856 40,826 320,432
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,177 5,618 7,795
Davis 6,050 1,320 7,370
Irvine 2,554 0 2,554
Los Angeles 319 1,797 2,116
Riverside 1,758 195 1,953
San Diego 1,254 377 1,631
San Francisco 385 0 385
Santa Barbara 1,173 563 1,736
Santa Cruz 830 322 1,152
LBL 0 97 97
LLL 0 191 191
Other - UC 7 581 588
CSL 0 174 174
CSU n/a 335 335
Other-Non-UC n/a 12,749 12,749
_______ ______ _____
16,507 24,319 40,826
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,705 45,347 61,052
Davis 37,181 6,449 43,630
Irvine 16,664 0 16,664
Los Angeles 2,576 14,148 16,724
Riverside 12,362 1,852 14,214
San Diego 6,345 3,316 9,661
San Francisco 2,485 0 2,485
Santa Barbara 8,589 4,722 13,311
Santa Cruz 5,392 3,495 8,887
LBL 0 937 937
LLL 0 1,253 1,253
Other - UC 49 5,546 5,595
CSL 0 995 995
CSU n/a 5,832 5,832
Other-Non-UC n/a 119,192 119,192
_______ ______ _____
107,348 213,084 320,432
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 2.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.5
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 8:06
Average session length (minutes:seconds) 13:19
Longest session recorded (minutes:seconds) 1231
Average number of searches completed per session 3.1
Retrievals per search - median 2.0
Retrievals per search - average 67.5
Retrievals per search - standard deviation 619.6
Percent of searches completed with 0 results 27.6%
Percent of searches entered that are long 4.6%
Percent of long searches completed
(includes partial results) 60.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 39,447 35.2%
DISPLAY (excluding automatic displays) 34,735 31.0%
ACFIND 14 0.0%
BROWSE 271 0.2%
SELECT 177 0.2%
HELP 1,297 1.2%
EXPLAIN 1,210 1.1%
SET/RESET 2,854 2.5%
SHOW 334 0.3%
AT 2,456 2.2%
ADD ON (AND, OR, AND NOT) 1,351 1.2%
LOGON or LOGOFF 20,953 18.7%
COMMENT 13 0.0%
SAVE 683 0.6%
USE 946 0.8%
OTHER 5,187 4.6%
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 6,371 15.5% 1,430 22.4% 11 88.6 369.0
AUTHOR 2,194 5.3% 545 24.8% 13 147.6 604.1
CORPORATE AUTH 431 1.0% 158 36.7% 22 215.1 833.6
EXACT CA 7 0.0% 5 71.4% 5 4.5 3.5
TITLE WORD 9,984 24.3% 3,106 31.1% 5 43.5 358.5
EXACT TITLE 5,232 12.7% 1,522 29.1% 2 17.4 147.5
TITLE -> TW 1,451 3.5% 345 23.8% 10 92.4 873.6
TITLE -> XT 1,451 3.5% 751 51.8% 1 6.6 20.1
SUBJECT 3,394 8.3% 1,333 39.3% 48 435.3 1897.5
EXACT SUBJECT 159 0.4% 30 18.9% 65 358.0 699.6
PERIODICAL 5,845 14.2% 1,159 19.8% 5 74.1 678.0
EXACT PE 2,311 5.6% 341 14.8% 2 48.0 689.1
RPE 1 0.0% 1 100% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 115 0.3% 36 31.3% 61 263.5 792.9
DATE 486 1.2% 107 22.0% 4 74.5 417.1
FORM 341 0.8% 74 21.7% 19 108.8 391.7
NUMBER* 86 0.2% 21 24.4% 1 3.0 8.2
MUSIC* 10 0.0% 4 40.0% 63 56.7 46.4
SERIES 765 1.9% 274 35.8% 4 148.6 1510.9
UNIFORM TITLE 13 0.0% 3 23.1% 42 363.9 1006.4
Other indexes 452 1.1% 167 36.9% 1 26.6 162.3
* 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 2,261 5.8% 660 29.2% 3 49.1 270.5
Single 36,441 94.2% 10,062 27.6% 5 98.2 758.1
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 22 8.9% 4 18.2% 14 36.4 50.7
CORPORATE AUTH 2 0.8% 2 100% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 202 82.1% 45 22.3% 36 267.7 1067.3
EXACT SUBJECT 19 7.7% 6 31.6% 134 511.9 1224.3
UNIFORM TITLE 1 0.4% 0 0.0% 3 3.0 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 252 100% 58 23.0% 33 257.2 1012.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
BRIEF 68.3%
LONG 11.8%
MARC 3.3%
FIELDS 2.6%
TAG 2.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.0%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. First word of command is invalid 27.7%
2. NS command - no next screen 26.8%
3. FIND command with invalid index name 13.6%
4. DISPLAY command contains invalid word 3.6%
5. Search term missing from search command 2.9%
6. KW search in database w/o KW index 2.9%
7. PS command - no previous screen 2.3%
8. DISPLAY command - no FIND results 1.8%
9. Valid command at an inappropriate time 1.6%
10. Max. # of ports to a Z39 db are in use 1.5%
11. All others 15.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.1%
2. FIND 14.0%
3. COMMAND WORDS 8.3%
4. Unrecognized term 6.0%
5. INDEXES 5.5%
6. PASSWORDS 5.3%
7. DISPLAY 2.9%
8. ADD-ON SEARCH 2.4%
9. DATABASES 2.2%
10. CATALOG 1.7%
11. All others 28.7%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 19.7%
2. FIND command with invalid index name 13.0%
3. First word of command is invalid 12.4%
4. DISPLAY command - middle of >1 screen 5.0%
5. DISPLAY command-first of >1 screen 4.3%
6. NS command - no next screen 3.3%
7. FIND command retrieves >1 book 3.0%
8. DISPLAY command - last of >1 screen 2.7%
9. KW search in database w/o KW index 2.2%
10. Help requested from SET DB command 2.2%
11. All others 32.2%
Ten most frequent SHOW requests:
1. HISTORY 32.2%
2. TIME 24.2%
3. GLOSSARY 12.0%
4. SEARCH 8.3%
5. SETTINGS 2.8%
6. MAIL STATUS 2.5%
7. MEDLINE NEWS 1.8%
8. UCSF PASSWORDS 1.2%
9. TIMEOUT SETTING 1.2%
10. INSPEC LOADING STATISTICS 0.9%
11. All others 12.9%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)