ps + kworker with state D The Next CEO of Stack OverflowIsolating cause of higher CPU usage on RHEL 6 vs RHEL 5How interpret kworker threads names?sysfs alternative to /proc/acpi/button/lid/LID/statePerformance problem Fedora 23 32-bit @ Dell D630 4GB/NvidiaHow is the “load average” interpreted in “top” output? Is it the same for all distributions?Kworker is at 100% - I think I've tried everything!Linux keep forking “kworker”Top command strange CPU% usagelinux machine disks became read only instead read writeHigh CPU load average; how to find the root cause?
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ps + kworker with state D
The Next CEO of Stack OverflowIsolating cause of higher CPU usage on RHEL 6 vs RHEL 5How interpret kworker threads names?sysfs alternative to /proc/acpi/button/lid/LID/statePerformance problem Fedora 23 32-bit @ Dell D630 4GB/NvidiaHow is the “load average” interpreted in “top” output? Is it the same for all distributions?Kworker is at 100% - I think I've tried everything!Linux keep forking “kworker”Top command strange CPU% usagelinux machine disks became read only instead read writeHigh CPU load average; how to find the root cause?
we have redhat machines in cluster
redhat version is - 7.2
when we perform
ps ax
on the machine we saw many kworker with state D
example
17165 ? D 0:00 [kworker/u66:1]
2151 ? D 0:58 [kworker/u33:0]
3866 ? D 0:26 [kworker/u65:0]
14967 ? D 0:00 [kworker/2:1]
2014 ? D 0:10 [kworker/u65:1]
19021 ? D 0:05 [kworker/u65:0]
26880 ? D 9:43 [kworker/16:2]
7972 ? D 9:04 [kworker/31:1]
12295 ? D 2:01 [kworker/3:1]
13859 ? D 0:11 [kworker/u65:3]
I must to say that we also face high load average on the CPU
based on that information , what should be the conclusion?
for example what we need to verify ? or to perform some tune for the OS?
linux rhel kernel linux-kernel ps
asked yesterday
yaelyael
2,78632878
add a comment |
we have redhat machines in cluster
redhat version is - 7.2
when we perform
ps ax
on the machine we saw many kworker with state D
example
17165 ? D 0:00 [kworker/u66:1]
2151 ? D 0:58 [kworker/u33:0]
3866 ? D 0:26 [kworker/u65:0]
14967 ? D 0:00 [kworker/2:1]
2014 ? D 0:10 [kworker/u65:1]
19021 ? D 0:05 [kworker/u65:0]
26880 ? D 9:43 [kworker/16:2]
7972 ? D 9:04 [kworker/31:1]
12295 ? D 2:01 [kworker/3:1]
13859 ? D 0:11 [kworker/u65:3]
I must to say that we also face high load average on the CPU
based on that information , what should be the conclusion?
for example what we need to verify ? or to perform some tune for the OS?
linux rhel kernel linux-kernel ps
asked yesterday
yaelyael
2,78632878
TheDstate usually means that things are waiting on I/O, usually disk. The system may have a process which is using an excessive amount of memory and this is causing paging, or there could be just a lot of reading/writing to disk. If the system is paging then adding more memory or setting memory limits will help. If it is a lot of reading/writing then improving the disk speed (e.g. changing to SSD from traditional hard disks or setting up RAID 0 to stripe the data) is the way to go.
– icarus
13 hours ago
add a comment |
we have redhat machines in cluster
redhat version is - 7.2
when we perform
ps ax
on the machine we saw many kworker with state D
example
17165 ? D 0:00 [kworker/u66:1]
2151 ? D 0:58 [kworker/u33:0]
3866 ? D 0:26 [kworker/u65:0]
14967 ? D 0:00 [kworker/2:1]
2014 ? D 0:10 [kworker/u65:1]
19021 ? D 0:05 [kworker/u65:0]
26880 ? D 9:43 [kworker/16:2]
7972 ? D 9:04 [kworker/31:1]
12295 ? D 2:01 [kworker/3:1]
13859 ? D 0:11 [kworker/u65:3]
I must to say that we also face high load average on the CPU
based on that information , what should be the conclusion?
for example what we need to verify ? or to perform some tune for the OS?
linux rhel kernel linux-kernel ps
asked yesterday
yaelyael
2,78632878
we have redhat machines in cluster
redhat version is - 7.2
when we perform
ps ax
on the machine we saw many kworker with state D
example
17165 ? D 0:00 [kworker/u66:1]
2151 ? D 0:58 [kworker/u33:0]
3866 ? D 0:26 [kworker/u65:0]
14967 ? D 0:00 [kworker/2:1]
2014 ? D 0:10 [kworker/u65:1]
19021 ? D 0:05 [kworker/u65:0]
26880 ? D 9:43 [kworker/16:2]
7972 ? D 9:04 [kworker/31:1]
12295 ? D 2:01 [kworker/3:1]
13859 ? D 0:11 [kworker/u65:3]
I must to say that we also face high load average on the CPU
based on that information , what should be the conclusion?
for example what we need to verify ? or to perform some tune for the OS?
linux rhel kernel linux-kernel ps
linux rhel kernel linux-kernel ps
asked yesterday
yaelyael
2,78632878
asked yesterday
yaelyael
2,78632878
asked yesterday
yaelyael
2,78632878
asked yesterday
yaelyael
2,78632878
asked yesterday
yaelyael
2,78632878
2,78632878
TheDstate usually means that things are waiting on I/O, usually disk. The system may have a process which is using an excessive amount of memory and this is causing paging, or there could be just a lot of reading/writing to disk. If the system is paging then adding more memory or setting memory limits will help. If it is a lot of reading/writing then improving the disk speed (e.g. changing to SSD from traditional hard disks or setting up RAID 0 to stripe the data) is the way to go.
– icarus
13 hours ago
add a comment |
TheDstate usually means that things are waiting on I/O, usually disk. The system may have a process which is using an excessive amount of memory and this is causing paging, or there could be just a lot of reading/writing to disk. If the system is paging then adding more memory or setting memory limits will help. If it is a lot of reading/writing then improving the disk speed (e.g. changing to SSD from traditional hard disks or setting up RAID 0 to stripe the data) is the way to go.
– icarus
13 hours ago
The
D state usually means that things are waiting on I/O, usually disk. The system may have a process which is using an excessive amount of memory and this is causing paging, or there could be just a lot of reading/writing to disk. If the system is paging then adding more memory or setting memory limits will help. If it is a lot of reading/writing then improving the disk speed (e.g. changing to SSD from traditional hard disks or setting up RAID 0 to stripe the data) is the way to go.– icarus
13 hours ago
The
D state usually means that things are waiting on I/O, usually disk. The system may have a process which is using an excessive amount of memory and this is causing paging, or there could be just a lot of reading/writing to disk. If the system is paging then adding more memory or setting memory limits will help. If it is a lot of reading/writing then improving the disk speed (e.g. changing to SSD from traditional hard disks or setting up RAID 0 to stripe the data) is the way to go.– icarus
13 hours ago
add a comment |
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The
Dstate usually means that things are waiting on I/O, usually disk. The system may have a process which is using an excessive amount of memory and this is causing paging, or there could be just a lot of reading/writing to disk. If the system is paging then adding more memory or setting memory limits will help. If it is a lot of reading/writing then improving the disk speed (e.g. changing to SSD from traditional hard disks or setting up RAID 0 to stripe the data) is the way to go.– icarus
13 hours ago