Eu tenho um laptop Linux com 4 GB de RAM e um processador i5. Na maioria das vezes apenas o Firefox e o Thunderbird estão abertos e dos 4 GB de RAM são usados cerca de 2,5 GB e 1 GB é 'cache'.
Agora, sempre que tento abrir uma pasta ou um terminal ou basicamente qualquer coisa. Há algum pedido de veiculação em espera por < 10 segundos. Cerca de 10-20% da minha CPU.
Eu posso entender quando iniciar um aplicativo como o LibreOffice, por exemplo, que leva tempo. Mas abrindo um terminal, onde talvez tenha lido em 3 a 5 arquivos? Como isso pode levar tanto tempo?
Se eu abrir os terminais depois disso, ele será iniciado imediatamente, presumivelmente, porque os arquivos estão no cache agora. Mesmo alterar o volume (depois de deixá-lo por algum tempo) causa IO e demora até 5 segundos.
Esse comportamento normal, com memória livre e um processador ok, mesmo esses pequenos casos de uso causam IO (imo) pesado e levam mais de um segundo?
Eu tenho um disco rígido normal. 150 GB / 180 GB estão cheios.
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-3.19.0-32-generic] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Laptop Thin HDD
Device Model: ST500LT012-9WS142
Serial Number: W0VGX3E6
LU WWN Device Id: 5 000c50 06e606f55
Firmware Version: 0001LVM1
User Capacity: 500.107.862.016 bytes [500 GB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 2.6, 3.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Nov 11 11:56:15 2015 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 0) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 103) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x1031) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 111 099 034 Pre-fail Always - 37914640
3 Spin_Up_Time 0x0003 099 099 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 097 097 020 Old_age Always - 3584
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 075 060 030 Pre-fail Always - 13001712045
9 Power_On_Hours 0x0032 093 093 000 Old_age Always - 6622 (255 222 0)
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 097 097 020 Old_age Always - 3580
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 063 050 045 Old_age Always - 37 (Min/Max 25/37)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 723
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 43
193 Load_Cycle_Count 0x0032 098 098 000 Old_age Always - 4642
194 Temperature_Celsius 0x0022 037 050 000 Old_age Always - 37 (0 12 0 0 0)
196 Reallocated_Event_Count 0x000f 093 093 030 Pre-fail Always - 6621 (44466 0)
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
254 Free_Fall_Sensor 0x0032 100 100 000 Old_age Always - 0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Interrupted (host reset) 00% 5857 -
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.