High wa usage

[AlexJ]

For some reason suddenly my wa usage in top has increased to 20%. The only thing which was done today was to update server to latest debian kernel.

Does anyone if this stats are good or bad? I am not sure how to read this stats and what to make out of it.

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	 0x000f 100 100 051 Pre-fail Always	 -	 0

3 Spin_Up_Time		 0x0007 083 083 011 Pre-fail Always	 -	 6010

4 Start_Stop_Count	 0x0032 100 100 000 Old_age Always	 -	 5

5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always	 -	 0

7 Seek_Error_Rate		 0x000f 100 100 051 Pre-fail Always	 -	 0

8 Seek_Time_Performance 0x0025 100 100 015 Pre-fail Offline	 -	 0

9 Power_On_Hours		 0x0032 095 095 000 Old_age Always	 -	 22954

10 Spin_Retry_Count	 0x0033 100 100 051 Pre-fail Always	 -	 0

11 Calibration_Retry_Count 0x0012 100 100 000 Old_age Always	 -	 0

12 Power_Cycle_Count	 0x0032 100 100 000 Old_age Always	 -	 5

13 Read_Soft_Error_Rate 0x000e 100 100 000 Old_age Always	 -	 0

183 Runtime_Bad_Block	 0x0032 100 100 000 Old_age Always	 -	 0

184 End-to-End_Error	 0x0033 100 100 000 Pre-fail Always	 -	 0

187 Reported_Uncorrect	 0x0032 100 100 000 Old_age Always	 -	 4

188 Command_Timeout		 0x0032 100 100 000 Old_age Always	 -	 0

190 Airflow_Temperature_Cel 0x0022 058 058 000 Old_age Always	 -	 42 (Lifetime Min/Max 28/42)

194 Temperature_Celsius	 0x0022 055 055 000 Old_age Always	 -	 45 (0 9 68 28)

195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always	 -	 1116032603

196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always	 -	 0

197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always	 -	 0

198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline	 -	 0

199 UDMA_CRC_Error_Count 0x003e 253 253 000 Old_age Always	 -	 0

200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age Always	 -	 0

201 Soft_Read_Error_Rate 0x000a 100 100 000 Old_age Always	 -	 0

http://tny.cz/58950be4 iostat

Linux 2.6.32-5-amd64 10/06/2012 _x86_64_ (8 CPU)


avg-cpu: %user %nice %system %iowait %steal %idle

5.81 0.00 0.55 2.23 0.00 91.41


Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn

sdb 51.30 198.93 1386.44 769317 5361672

sda 51.09 188.12 1386.44 727500 5361672

md0 0.03 0.24 0.00 936 0

md1 0.14 1.04 0.05 4034 176

md2 72.58 385.32 1383.16 1490131 5348968

Something isn't right and i am not sure what it is.. if someone can help me out it would be great!

[Grumpy]

Have you just tried booting into the prev kernel?

[AlexJ]

Have you just tried booting into the prev kernel?

I am not super expert so would need some help. How can I do that?

Thanks

[Grumpy]

You should be able to select the old kernel as default from your grub. Details, I cannot help with since I don't use debian.

[p4guru]

see you're using software raid, which by default so does a mdadm raid check weekly to make sure raid arrays are okay - could be that ?

me the raid check usually happens once a week on Sundays

cat /proc/mdstats

should tell you the status of your raid arrays