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Hlavní témata => Server => Téma založeno: rado3105 23. 12. 2014, 21:56:03
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Kopírujem súbory na server cez SSH, gigová linka, nedávno to šlo ešte 20MB/s, teraz to ide len 3MB/s, navyše monitorix ukazuje vyťaženie systému na 2,5...pričom HTOP ukazuje vyťaženie CPU na nejakych 15% spolu....čo to môže robiť?
nejedná sa o virtuálny server
vďaka
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tu sú screenshoty monitorixu a htop:
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htop
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teraz pozeram dmesg a tam mi ukazuje nejake chyby na disku...
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Load a využití CPU je něco jiného.... do loadu se započítává i disková aktivita. Řekl bych že tvůj disk je problém.
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Taketo chyby ako mas v dmesg niesu pravdepodobne chyby disku. System ma problem komunikovat s diskom na max. rychlost, tak postupne znizuje rychlost komunikacie. Ked si pozries vyssie do vypisu dmesg, tak uvidis ako system postupne znizoval rychlost z maximalnej(150MB/s) az na najnizsiu rychlost ale nepomohlo to, lebo aj na UDMA/33MB/s ma problem. V poslednom obdobi som mal na dvoch PC takyto podobny problem. V disku to nebolo, problem mala zakladna doska a zdroj.
Moze byt problem aj v disku alebo aj v datovom kabli.
Odporucam postupne vyskusat vymenit datovy kabel, zdroj, iny disk a ak to nepomoze, tak je to bude pokazena zakladna doska. Bez experimentovania sa neda zistit, kde je problem.
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poprehadzoval som kable, dal kopirovat a chyby uz nehadze, akurat je v dmesg toto:
7.117749] ata5.00: ACPI _SDD failed (AE 0x5)
[ 7.117753] ata5.00: ACPI: failed the second time, disabled
[ 7.117792] ata7.00: ACPI _SDD failed (AE 0x5)
[ 7.117798] ata7.00: ACPI: failed the second time, disabled
[ 7.117933] ata7.00: ATA-9: WDC WD40EFRX-68WT0N0, 80.00A80, max UDMA/133
[ 7.117939] ata7.00: 7814037168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[ 7.118616] ata7.00: configured for UDMA/133
[ 7.133917] ata5.00: HPA detected: current 488388911, native 488397168
[ 7.133973] ata5.00: ATA-8: WDC WD2500HHTZ-04N21V0, 04.06A00, max UDMA/133
[ 7.133979] ata5.00: 488388911 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[ 7.134558] ata5.00: configured for UDMA/133
kopirovanie cez ssh ide vsak stale max 3MB/s, vytazenie cpu na 10%....kde by mohla byt chyba?
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zkus nekde moutnout ramdisk a kopirovat na nej (jakou rychlosti to pujde) -> http://www.jamescoyle.net/how-to/943-create-a-ram-disk-in-linux
tim vyloucis bud sitovou chybu, nebo vadu disku (a spis to vidim na vadny disk)
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tu je vypis smart:
wd raptor:
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 154 152 021 Pre-fail Always - 1300
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 207
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 080 080 000 Old_age Always - 14646
10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 206
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 154
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 53
194 Temperature_Celsius 0x0022 115 095 000 Old_age Always - 28
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 0
wd red:
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 247 176 021 Pre-fail Always - 4641
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 46
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 091 091 000 Old_age Always - 7016
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 45
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 36
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 682
194 Temperature_Celsius 0x0022 123 105 000 Old_age Always - 29
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0
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skusal som kopirovat aj na druhy disk - wd raptor....a to iste, max dokopy to da 3MB/s
tu je vypis z eth0:
eth0 Link encap:Ethernet HWaddr 90:2b:34:d7:1c:b0
inet addr:10.10.10.10 Bcast:10.10.10.31 Mask:255.255.255.224
inet6 addr: fe80::922b:34ff:fed7:1cb0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2521388 errors:0 dropped:0 overruns:0 frame:0
TX packets:1288254 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3698743134 (3.4 GiB) TX bytes:99897998 (95.2 MiB)
Interrupt:27 Base address:0x6000
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Zkus pouzit sifru blowfish. "-C blowfish", kdyz to nepomuze, tak nemas problem s CPU.
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- takze uz to ide 11MB/s kopirovanie na server cez ssh, cez 1gbitovu linku....
- disk je klasicky sata interny 3,5 wd blue...cize min 50MB/s da....
- chyby v dmesg uz neukazuje...
- prehodil som kable (sata aj datove aj napajacie, upgradoval som cely system, opravil som wd red cez fsck)
teraz ma zaujima, kolko by to malo dat po gigovej linke cez ssh , pricom pocas kopirovania cez ssh (11MB/s) mi htop ukazuje vytazenost CPU 41%
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a vyzkousel si ten ramdisk?
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Pokiaľ má to CPU podporu kryptoakcelerácie, tak to má dať viac.
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a vyzkousel si ten ramdisk?
cat /dev/zero | pv | ssh někam "cat > /dev/null"