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nobody0
16.02.02, 10:56
Welche Parameter kann man bei SCSI-Platten zum Tunen nehmen ohne dass es Datenverlusst gibt und welche Parameter bringen am meisten Performance? :confused:

Ich will nämlich mal wissen, wieso meine UW2SCCI-Platte (10.000 UPM, 4 MB Cache) ungefähr halb so langsam ist wie eine ATA-100-Platte.
Hier sind die Daten der SCSI-Platte:


scsiinfo -a /dev/sda

Scsiinfo version 1.7(eowmob)



Inquiry command

---------------

Relative Address 0

Wide bus 32 0

Wide bus 16 1

Synchronous neg. 1

Linked Commands 1

Command Queueing 1

SftRe 0

Device Type 0

Peripheral Qualifier 0

Removable? 0

Device Type Modifier 0

ISO Version 0

ECMA Version 0

ANSI Version 3

AENC 0

TrmIOP 0

Response Data Format 2

Vendor: IBM

Product: DRVS18V

Revision level: 011068005EA6HKRSPKT011



Serial Number ' 68005EA6HK'

Data from Rigid Disk Drive Geometry Page

----------------------------------------

Number of cylinders 7053

Number of heads 20

Starting write precomp 0

Starting reduced current 0

Drive step rate 0

Landing Zone Cylinder 7264

RPL 0

Rotational Offset 0

Rotational Rate 10020



Data from Caching Page

----------------------

Write Cache 1

Read Cache 1

Prefetch units 0

Demand Read Retention Priority 1

Demand Write Retention Priority 1

Disable Pre-fetch Transfer Length 65535

Minimum Pre-fetch 0

Maximum Pre-fetch 65535

Maximum Pre-fetch Ceiling 65535



Data from Format Device Page

----------------------------

Removable Medium 0

Supports Hard Sectoring 1

Supports Soft Sectoring 0

Addresses assigned by surface 0

Tracks per Zone 20

Alternate sectors per zone 3

Alternate tracks per zone 0

Alternate tracks per lun 0

Sectors per track 272

Bytes per sector 512

Interleave 1

Track skew factor 36

Cylinder skew factor 84



Data from Error Recovery Page

-----------------------------

AWRE 1

ARRE 1

TB 0

RC 0

EER 0

PER 0

DTE 0

DCR 0

Read Retry Count 1

Correction Span 144

Head Offset Count 0

Data Strobe Offset Count 0

Write Retry Count 1

Recovery Time Limit 0



Data from Control Page

----------------------

RLEC 0

QErr 0

DQue 0

EECA 0

RAENP 0

UUAENP 0

EAENP 0

Queue Algorithm Modifier 0

Ready AEN Holdoff Period 0



Data from Disconnect-Reconnect Page

-----------------------------------

Buffer full ratio 0

Buffer empty ratio 0

Bus Inactivity Limit 0

Disconnect Time Limit 0

Connect Time Limit 0

Maximum Burst Size 0

DTDC 0x0



Data from Defect Lists

----------------------

2502 entries in manufacturer table.

Format is: bytes from index [Cyl:Head:Off]

Offset -1 marks whole track as bad.



15:1:107264 16:16:139008 19:6:40704 21:15:75520 22:5:42752

26:15:132864 29:12:64768 30:1:108800 33:10:134912 33:11:138496

33:11:139008 35:1:126208 36:16:1280 36:16:1792 38:12:130816

38:14:133888 38:14:134400 38:14:134912 39:16:6912 39:16:7424

40:1:105216 41:15:76544 43:6:113920 45:0:106240 46:18:29440

47:1:108800 52:1:14592 57:0:131840 58:16:134912 64:15:127744

64:15:128256 64:15:128768 70:9:125184 74:18:80640 78:14:25344

82:2:52992 83:2:52992 84:2:52992 90:10:128256 90:10:128768

93:1:108800 94:10:132864 95:6:116992 100:6:57088 106:1:105216

106:8:136960 106:15:123648 106:15:124160 106:15:124672 107:1:107264

107:6:116992 108:16:3840 110:16:7424 110:16:7936 111:5:111360

115:18:105216 121:6:56576 124:2:256 126:17:117504 126:17:118016

126:17:118528 129:15:119552 129:15:120064 130:14:132864 133:1:107264

134:3:46336 136:19:29952 138:12:52480 142:16:139008 143:8:136960

145:16:5888 152:15:119552 152:15:120064 152:15:120576 153:9:122624

158:15:125184 158:15:125696 158:15:126208 164:10:132864 168:15:124672

171:4:49408 171:15:2304 172:12:130304 172:12:130816 177:16:82688

180:16:1280 180:16:1792 181:10:134912 182:15:122624 185:15:5888

189:4:11520 197:1:106752 197:1:107264 197:1:107776 197:1:108288

207:16:88320 208:18:130816 219:3:116480 220:3:116480 221:11:8448

224:16:138496 224:16:139008 226:13:7936 230:12:128768 235:12:17664

235:12:18176 244:12:134912 248:11:8448 256:11:136448 256:18:130816

257:4:62720 261:0:106240 274:10:134912 283:18:54016 294:1:111360

296:15:134400 296:15:134912 297:0:106240 297:11:3328 302:5:61696

302:5:62208 307:1:104704 307:1:105216 307:1:105728 307:1:106240

315:0:106240 317:0:106240 329:12:75008 330:12:75008 334:1:105216

336:6:17664 343:16:103680 343:16:104192 344:16:103680 345:16:103680

355:12:104704 378:1:128768 379:1:128768 382:1:128768 384:10:136960

386:1:106752 390:1:128768 391:0:93952 396:11:1792 396:19:62720

397:19:62720 402:11:7936 404:1:105216 407:8:76544 426:5:111360

442:1:105216 445:13:15616 445:13:16128 453:4:112384 465:1:107264

466:1:107264 468:1:107264 471:4:87296 476:1:105728 480:0:132864

493:1:104192 494:1:104192 494:10:23808 494:10:134912 495:1:104192

496:1:104192 497:1:104192 498:1:104192 506:7:2816 510:0:132864

515:8:24832 516:4:116480 520:12:3328 520:12:3840 525:2:49920

531:12:128768 556:1:54528 563:12:51456 565:0:131840 576:7:90880

576:12:132864 589:0:131840 599:1:106752 599:1:107264 599:1:107776

599:1:108288 612:1:104704 612:1:105216 612:1:105728 612:1:106240

619:6:38656 620:12:80128 620:12:80640 620:12:81152 620:12:81664

623:12:80128 638:1:107776 642:11:8448 651:12:55040 670:7:20224

671:19:40704 672:10:132864 675:12:105728 675:16:18688 675:16:19200

675:16:19712 675:16:20224 698:2:67840 698:10:139008 702:1:106240

704:15:60160 721:3:51968 722:16:1792 726:10:1792 730:1:105216

736:1:106240 737:1:105216 741:6:26368 748:1:21760 749:1:21760

752:12:9984 753:1:134912 754:1:134912 755:0:109824 764:14:136960

766:0:131328 766:0:131840 766:0:132352 766:0:132864 768:1:133888

768:13:123648 770:16:3328 770:16:3840 771:1:133888 772:6:91392

774:0:131840 780:15:120064 780:15:120576 782:10:136960 782:16:5376

782:16:5888 786:11:5888 786:16:5376 786:16:5888 788:1:104704

788:1:105216 788:1:105728 788:1:106240 788:1:106752 788:1:107264

788:1:107776 788:1:108288 789:1:104704 789:1:105216 789:1:105728

789:1:106240 789:1:106752 789:1:107264 789:1:107776 789:1:108288

790:1:104704 791:1:134400 792:15:121600 792:15:122112 792:15:122624

792:18:97536 796:1:105728 797:1:105216 797:15:129792 797:15:130304

801:16:1792 801:18:118528 801:19:51968 803:1:134912 804:14:132352

804:14:132864 812:16:16128 813:8:96512 818:11:3840 818:18:1280

818:18:1792 822:16:5376 822:16:5888 824:13:1792 825:15:138496

826:1:134400 830:18:30464 832:6:123136 832:11:126208 832:11:126720

835:1:134400 841:10:20736 841:10:21248 841:10:21760 841:10:22272

859:12:31488 860:12:130816 864:1:107264 864:14:19200 864:18:122624

874:4:138496 875:4:138496 876:4:138496 877:4:138496 880:13:3328

880:13:3840 890:10:22272 892:14:124672 894:12:1280 894:12:1792

894:13:134400 894:13:134912 896:1:106752 896:1:108800 896:10:1792

898:12:120064 906:1:106240 909:0:132352 909:5:8448 918:16:18176

919:0:36096 920:15:3840 924:17:118016 924:17:118528 925:9:33536

926:1:108288 926:4:95488 928:10:132864 929:0:132352 930:15:129792

930:15:130304 930:15:130816 935:0:132352 936:1:106752 938:1:106752

938:1:107264 938:1:107776 938:1:108288 938:12:126208 938:12:126720

940:1:105216 940:15:128768 940:19:134912 942:1:104704 943:2:133376

949:14:130816 953:17:71424 955:0:131840 955:0:132352 956:0:132864

965:5:44800 970:3:65280 980:1:104704 980:1:105216 980:1:105728

980:1:106240 982:1:105728 987:0:132352 990:12:126720 992:0:132864

1006:0:132864 1015:1:105728 1017:0:132864 1018:0:132864 1021:8:18176

1023:12:127232 1026:8:18176 1027:0:132864 1027:1:104704 1027:1:105216

1027:1:105728 1027:1:106240 1028:1:104704 1028:1:105216 1028:1:105728

1028:1:106240 1029:0:107264 1029:1:125184 1030:0:107264 1031:0:106752

1031:0:107264 1031:0:107776 1031:0:108288 1032:0:106752 1032:0:107264

1032:0:107776 1032:0:108288 1033:0:106752 1033:0:107264 1033:0:107776

1033:0:108288 1034:0:107264 1035:4:21760 1043:0:132864 1047:0:132864

1048:0:132864 1049:0:132864 1050:0:132864 1051:0:132864 1052:0:132864

1053:0:132864 1054:0:132864 1055:0:132864 1056:0:132864 1057:0:132864

1057:4:39680 1058:0:132864 1059:0:132864 1060:0:132864 1061:0:132864

1061:8:116480 1062:0:132864 1063:0:132864 1064:0:132864 1065:0:132864

1066:0:132864 1069:0:132864 1078:0:132352 1103:2:110848 1104:0:132352

1105:1:108800 1115:1:105728 1116:1:130304 1116:6:105728 1117:0:132352

1117:0:132864 1118:0:132864 1119:0:132864 1120:0:132864 1121:0:132864

1122:0:132864 1123:0:132864 1124:0:132864 1124:6:34048 1139:1:129792

1140:1:129792 1143:6:109824 1144:1:105728 1146:0:132864 1147:10:137984

1147:10:138496 1147:10:139008 1151:15:6912 1160:1:105728 1161:8:112384

1176:1:106240 1179:1:105728 1184:8:96000 1186:8:96000 1187:1:105728

1189:8:98048 1192:19:94464 1198:0:129280 1204:11:7424 1205:0:132352

1206:11:7424 1206:15:136960 1207:8:34048 1207:15:136960 1208:8:34048

1208:15:136960 1209:7:91904 1226:1:104192 1227:1:104192 1230:8:768

1230:10:139008 1232:10:1280 1232:10:1792 1234:1:105728 1238:15:1280

1238:17:63744 1238:17:64256 1238:17:64768 1238:17:65280 1247:11:15104

1254:18:134912 1263:12:29440 1265:12:76032 1271:12:76032 1277:9:87296

1281:12:108800 1300:10:14592 1304:9:87296 1310:0:131328 1319:0:104704

1319:0:105216 1319:0:105728 1319:0:106240 1320:0:104704 1320:0:105216

1320:0:105728 1320:0:106240 1320:8:120576 1320:19:87808 1321:19:87808

1332:1:104704 1343:13:139008 1356:0:102656 1356:0:103168 1356:0:103680

1356:0:104192 1357:12:138496 1357:12:139008 1358:1:107776 1359:0:104192

1363:12:87296 1365:9:42240 1366:9:42240 1373:0:137472 1374:12:7936

1375:1:106240 1377:1:0

[truncated]



0 entries in grown table.

Format is: bytes from index [Cyl:Head:Off]

Offset -1 marks whole track as bad.



Data from Notch Parameters Page

-------------------------------

Notched Drive 1

Logical or Physical Notch 0

Max # of notches 16

Active Notch 0

Starting Boundary 0x900

Ending Boundary 0x1b9513

Pages Notched 00000000 0000100c



Data from Verify Error Recovery Page

------------------------------------

EER 0

PER 0

DTE 0

DCR 0

Verify Retry Count 1

Verify Correction Span (bits) 72

Verify Recovery Time Limit (ms) 0



Data from Peripheral Device Page

--------------------------------

Interface Identifier 0x0

X3.131: Small Computer System Interface

Vendor Specific Data 0x0000000000000100

MrIch
16.02.02, 15:19
ich glaube nicht, dass man da viel tunen kann!!!

Ich habe mal geguckt ob man bei einer SCSI HDD was mit hdparm machen kann, doch da ging fast nichts einzustellen und schneller wurde sie auch nicht, ...

IDE Platten dagegen, kann man mit hdparm sehr gut tunen, ... da schaffe ich mit meiner IBM über 37MB/sec

nobody0
16.02.02, 16:32
Original geschrieben von MrIch
Ich habe mal geguckt ob man bei einer SCSI HDD was mit hdparm machen kann, doch da ging fast nichts einzustellen und schneller wurde sie auch nicht, ...


Das liegt daran, dass hdparm kein SCSI unterstütztm (man hdparm):

hdparm provides a command line interface to various hard disk ioctls supported by the stock Linux ATA/IDE device driver subsystem.

MrIch
16.02.02, 16:52
oh, man sollte öfter mal die manpage lesen!