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assente
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 Posted: Mon Sep 13, 2004 9:38 am Post subject: [hdparm] hd simili, impostazioni uguali, prestazioni diverse |
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Ho visto un po' sul forum tutti gli argomenti che trattavano hdparm, però non sono riuscito a capire la causa di questo comportamento anomalo:
| Code: | root@pc01 linux # hdparm -tT /dev/hda
/dev/hda:
Timing cached reads: 964 MB in 2.00 seconds = 481.59 MB/sec
Timing buffered disk reads: 2 MB in 12.05 seconds = 169.93 kB/sec
root@pc01 linux # hdparm -tT /dev/hdb
/dev/hdb:
Timing cached reads: 968 MB in 2.01 seconds = 482.39 MB/sec
Timing buffered disk reads: 172 MB in 3.00 seconds = 57.25 MB/sec
root@pc01 linux # hdparm /dev/hda
/dev/hda:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 65535/16/63, sectors = 40027029504, start = 0
root@pc01 linux # hdparm /dev/hdb
/dev/hdb:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 65535/16/63, sectors = 41110142976, start = 0
root@pc01 linux # cat /proc/ide/hda/model
MAXTOR 6L040J2
root@pc01 linux # cat /proc/ide/hdb/model
Maxtor 6E040L0 |
Qualche idea sul perchè di una velocità di trasferimento così diversa?
su /etc/conf.d/hdparm ho solo --> all_args="-d1 -c1"
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motaboy
Retired Dev
Joined: 15 Dec 2003
Posts: 1483
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| Posted: Mon Sep 13, 2004 10:09 am Post subject: |
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Forse perché uno é master e l'altro slave?
Potresti provare ad invertirli sui canali (ovviamente inverti anche i jumper di master e slave).
Oppure potresti mettere il primario slave (hdb) sul secondario master (hdc).
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FonderiaDigitale
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Joined: 06 Nov 2003
Posts: 1710
Location: Rome, Italy
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| Posted: Mon Sep 13, 2004 10:13 am Post subject: |
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tieni in considerazione:
a. hanno geometrie uguali? se no, normale.
b. l'eta'=l'usura
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assente
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| Posted: Mon Sep 13, 2004 11:01 am Post subject: |
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ok a tutto.. ma avete visto?
Timing buffered disk reads: 2 MB in 12.05 seconds = 169.93 kB/sec
sono kb!!
Mi devo preoccupare? Posso fare qualcosa per assicurarmi che il primo disco sia "sano"?
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paolo
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Posts: 768
Location: SBT (AP)
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| Posted: Mon Sep 13, 2004 1:07 pm Post subject: |
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| assente wrote: | ...
Mi devo preoccupare? Posso fare qualcosa per assicurarmi che il primo disco sia "sano"? |
Prova qualche utility SMART.
Sicuramente c'è QUALCOSA DI GRANDE (tra di voi) che non va
Occhio e croce sembra la cache che non va...
che dice?
P.
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!equilibrium
Bodhisattva
Joined: 06 Jun 2004
Posts: 2109
Location: MI/BG/LC
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| Posted: Mon Sep 13, 2004 1:17 pm Post subject: |
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assicurati anche che la WriteCache sia abilitata su entrambi gli HD:
hdparm -i /dev/hd*
comunque in caso fossero disabilitate per abilitarle dai un:
hdparm -W1 /dev/hd*
a parte ciò in generale, se i modelli degli hd sono differenti sicuramente al 99% hanno prestazioni diverse, dipende da quanta cache hanno, che impostazioni di APM hanno, ma soprattutto che tipo di algoritmo per la lettura/scrittura usano ....
leggiti il man di hdparm, è molto corto, soprattutto la sezione che riguarda l'APM, perchè abilitandola totalmente/parzialmente o disabilitandola le prestazioni variano di parecchio...
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assente
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Location: Torino, italia, New Europe
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| Posted: Mon Sep 13, 2004 1:54 pm Post subject: |
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| Code: | # hdparm -I /dev/hda
/dev/hda:
ATA device, with non-removable media
Model Number: MAXTOR 6L040J2
Serial Number: 662134846519
Firmware Revision: AR1.0400
Standards:
Used: ATA/ATAPI-5 T13 1321D revision 1
Supported: 5 4 3 2 & some of 6
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 78177792
device size with M = 1024*1024: 38172 MBytes
device size with M = 1000*1000: 40027 MBytes (40 GB)
Capabilities:
LBA, IORDY(can be disabled)
bytes avail on r/w long: 4 Queue depth: 1
Standby timer values: spec'd by Vendor, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Look-ahead
* Write cache
* Power Management feature set
Security Mode feature set
* SMART feature set
* Mandatory FLUSH CACHE command
* Device Configuration Overlay feature set
* Automatic Acoustic Management feature set
SET MAX security extension
* DOWNLOAD MICROCODE cmd
* SMART self-test
* SMART error logging
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
20min for SECURITY ERASE UNIT.
HW reset results:
CBLID- above Vih
Device num = 0 determined by the jumper
Checksum: correct |
La WriteCache è abilitata su entrambi
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!equilibrium
Bodhisattva
Joined: 06 Jun 2004
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| Posted: Mon Sep 13, 2004 2:04 pm Post subject: |
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attenzione:
hdparm -i
hdparm -I
sono due comandi diversi 
comunque posta l'output di hdparm -iI per entrambi gli HD
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assente
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Location: Torino, italia, New Europe
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| Posted: Mon Sep 13, 2004 2:15 pm Post subject: |
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| DarkAngel76 wrote: | attenzione:
hdparm -i
hdparm -I
sono due comandi diversi
comunque posta l'output di hdparm -iI per entrambi gli HD |
Lo so infatti la WriteCache l'ho controllata con -i
| Code: |
# hdparm -I /dev/hdb <-- Questo è quello che va bene
/dev/hdb:
ATA device, with non-removable media
Model Number: Maxtor 6E040L0
Serial Number: E1H5TZEE
Firmware Revision: NAR61590
Standards:
Supported: 7 6 5 4
Likely used: 7
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 80293248
device size with M = 1024*1024: 39205 MBytes
device size with M = 1000*1000: 41110 MBytes (41 GB)
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 1
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Advanced power management level: unknown setting (0x0000)
Recommended acoustic management value: 192, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* NOP cmd
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Look-ahead
* Write cache
* Power Management feature set
Security Mode feature set
* SMART feature set
* FLUSH CACHE EXT command
* Mandatory FLUSH CACHE command
* Device Configuration Overlay feature set
* Automatic Acoustic Management feature set
SET MAX security extension
Advanced Power Management feature set
* DOWNLOAD MICROCODE cmd
* SMART self-test
* SMART error logging
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
HW reset results:
CBLID- above Vih
Device num = 1 determined by the jumper
Checksum: correct
# hdparm -i /dev/hda
/dev/hda:
Model=MAXTOR 6L040J2, FwRev=AR1.0400, SerialNo=662134846519
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=32256, SectSize=21298, ECCbytes=4
BuffType=DualPortCache, BuffSize=1818kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78177792
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 1:
* signifies the current active mode
# hdparm -i /dev/hdb
/dev/hdb:
Model=Maxtor 6E040L0, FwRev=NAR61590, SerialNo=E1H5TZEE
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=80293248
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: (null):
* signifies the current active mode
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gutter
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| Posted: Mon Sep 13, 2004 2:43 pm Post subject: |
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Come puoi vedere dai risultati di hdparm i due dischi non sono uguali. Ti consiglio di cercare sul sito di maxtor i datasheet per ulteriori informazioni.
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assente
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| Posted: Mon Sep 13, 2004 4:40 pm Post subject: |
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| gutter wrote: | | Come puoi vedere dai risultati di hdparm i due dischi non sono uguali. Ti consiglio di cercare sul sito di maxtor i datasheet per ulteriori informazioni. |
Infatti ho scritto simili, comunque qualcosa di strano ci deve essere perchè un disco trasferisce nell'ordine di kb e non mb..
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