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What does %st mean in top?
The Next CEO of Stack OverflowHow can I diagnose and fix frequent 100% cpu utilization from kernel?aws stolen cpu on dedicated machineDebugging and fine-tuning the linux process schedulerWhat does 'nice' mean on CPU utilization graphs?top does not runWhat does Virtual memory size in top mean?What do all the numbers in `top` mean?What exactly do the colors in htop status bars mean?top: What does cpu usage mean?my webserver with 16GB ram shows all RAM as used, but is it really, see the 'top'what does “***” mean when tracerouteHigh Load, low CPU, Memory and Disk IO - Highend ServerM4.large on AWS encounters stolen cpu
Here is an example from my top:
Cpu(s): 6.0%us, 3.0%sy, 0.0%ni, 78.7%id, 0.0%wa, 0.0%hi, 0.3%si, 12.0%st
I am trying to figure out the significance of the %st field. I read that it means steal cpu and it represents time spent by the hypervisor, but I want to know what that actually means to me.
Does it mean I may be on a busy physical server and someone else is using too much CPU on the server and they are taking from my VM?
If I am using EBS could it be related to handling EBS I/O at the hypervisor level?
Is it related to things running on my VM or is it completely unaffected by me?
linux amazon-ec2 cpu-usage top
asked Feb 3 '11 at 5:04
BenBen
310247
add a comment |
Here is an example from my top:
Cpu(s): 6.0%us, 3.0%sy, 0.0%ni, 78.7%id, 0.0%wa, 0.0%hi, 0.3%si, 12.0%st
I am trying to figure out the significance of the %st field. I read that it means steal cpu and it represents time spent by the hypervisor, but I want to know what that actually means to me.
Does it mean I may be on a busy physical server and someone else is using too much CPU on the server and they are taking from my VM?
If I am using EBS could it be related to handling EBS I/O at the hypervisor level?
Is it related to things running on my VM or is it completely unaffected by me?
linux amazon-ec2 cpu-usage top
asked Feb 3 '11 at 5:04
BenBen
310247
add a comment |
Here is an example from my top:
Cpu(s): 6.0%us, 3.0%sy, 0.0%ni, 78.7%id, 0.0%wa, 0.0%hi, 0.3%si, 12.0%st
I am trying to figure out the significance of the %st field. I read that it means steal cpu and it represents time spent by the hypervisor, but I want to know what that actually means to me.
Does it mean I may be on a busy physical server and someone else is using too much CPU on the server and they are taking from my VM?
If I am using EBS could it be related to handling EBS I/O at the hypervisor level?
Is it related to things running on my VM or is it completely unaffected by me?
linux amazon-ec2 cpu-usage top
asked Feb 3 '11 at 5:04
BenBen
310247
Here is an example from my top:
Cpu(s): 6.0%us, 3.0%sy, 0.0%ni, 78.7%id, 0.0%wa, 0.0%hi, 0.3%si, 12.0%st
I am trying to figure out the significance of the %st field. I read that it means steal cpu and it represents time spent by the hypervisor, but I want to know what that actually means to me.
Does it mean I may be on a busy physical server and someone else is using too much CPU on the server and they are taking from my VM?
If I am using EBS could it be related to handling EBS I/O at the hypervisor level?
Is it related to things running on my VM or is it completely unaffected by me?
linux amazon-ec2 cpu-usage top
linux amazon-ec2 cpu-usage top
asked Feb 3 '11 at 5:04
BenBen
310247
asked Feb 3 '11 at 5:04
BenBen
310247
asked Feb 3 '11 at 5:04
BenBen
310247
asked Feb 3 '11 at 5:04
BenBen
310247
asked Feb 3 '11 at 5:04
BenBen
310247
310247
add a comment |
add a comment |
5 Answers
5
active
oldest
votes
The Steal percentage (documented in the mpstat man-page) is indeed the hypervisor telling your VM that it can't have CPU resources the VM would otherwise use. This percentage is regulated in part by Amazon's CPU limiting, and VM load on that specific host. I/O load is monitored through the %io stat.
You will see this most often on their t class of instances that use a CPU credit model for regulating performance. If you're seeing high percentages, chances are good you're running out of CPU credits.
answered Feb 3 '11 at 5:40
sysadmin1138♦sysadmin1138
117k17145281
ahh ... I was looking in thetopman-page. So it could indeed be because I am on a machine that is getting used heavily by another user. On one of my EC2 instances I have seen it get as high as 65%
– Ben
Feb 3 '11 at 16:59
@Ben Yeah, the fact that the info isn't in thetopman page makes this harder than it needs to be. The stuff I've seen online suggests that certain EC2 machine types can peak as high as 70%.
– sysadmin1138♦
Feb 3 '11 at 17:50
add a comment |
man sar's
Show the percentage of time spent in involuntary wait by the virtual CPU or CPUs while
the hypervisor was servicing another virtual processor.
answered Feb 3 '11 at 5:34
poigepoige
7,09211437
add a comment |
Steal load accounts for time when your VM wanted to run something, but the hypervisor chose to run something else instead.
answered Feb 3 '11 at 5:36
Joel KJoel K
4,80712532
add a comment |
Steal Time or stolen time, mean the amount of time that your host in VM is ready to run (some instruction), but could not do this because other's VM competing for the CPU. When the value get bigger, this is indicate that your vm getting slow or stall. So keep this value as minimum as possible.
answered Mar 13 '15 at 4:24
Joko SudiroJoko Sudiro
412
add a comment |
Steal time is the percentage of time a virtual CPU (vCPU) has to wait to run on a Physical CPU (pCPU) while the hypervisor is servicing another virtual CPU (vCPU).
full credit to source
answered yesterday
grepitgrepit
1073
add a comment |
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5 Answers
5
active
oldest
votes
5 Answers
5
active
oldest
votes
active
oldest
votes
active
oldest
votes
The Steal percentage (documented in the mpstat man-page) is indeed the hypervisor telling your VM that it can't have CPU resources the VM would otherwise use. This percentage is regulated in part by Amazon's CPU limiting, and VM load on that specific host. I/O load is monitored through the %io stat.
You will see this most often on their t class of instances that use a CPU credit model for regulating performance. If you're seeing high percentages, chances are good you're running out of CPU credits.
answered Feb 3 '11 at 5:40
sysadmin1138♦sysadmin1138
117k17145281
ahh ... I was looking in thetopman-page. So it could indeed be because I am on a machine that is getting used heavily by another user. On one of my EC2 instances I have seen it get as high as 65%
– Ben
Feb 3 '11 at 16:59
@Ben Yeah, the fact that the info isn't in thetopman page makes this harder than it needs to be. The stuff I've seen online suggests that certain EC2 machine types can peak as high as 70%.
– sysadmin1138♦
Feb 3 '11 at 17:50
add a comment |
The Steal percentage (documented in the mpstat man-page) is indeed the hypervisor telling your VM that it can't have CPU resources the VM would otherwise use. This percentage is regulated in part by Amazon's CPU limiting, and VM load on that specific host. I/O load is monitored through the %io stat.
You will see this most often on their t class of instances that use a CPU credit model for regulating performance. If you're seeing high percentages, chances are good you're running out of CPU credits.
answered Feb 3 '11 at 5:40
sysadmin1138♦sysadmin1138
117k17145281
ahh ... I was looking in thetopman-page. So it could indeed be because I am on a machine that is getting used heavily by another user. On one of my EC2 instances I have seen it get as high as 65%
– Ben
Feb 3 '11 at 16:59
@Ben Yeah, the fact that the info isn't in thetopman page makes this harder than it needs to be. The stuff I've seen online suggests that certain EC2 machine types can peak as high as 70%.
– sysadmin1138♦
Feb 3 '11 at 17:50
add a comment |
The Steal percentage (documented in the mpstat man-page) is indeed the hypervisor telling your VM that it can't have CPU resources the VM would otherwise use. This percentage is regulated in part by Amazon's CPU limiting, and VM load on that specific host. I/O load is monitored through the %io stat.
You will see this most often on their t class of instances that use a CPU credit model for regulating performance. If you're seeing high percentages, chances are good you're running out of CPU credits.
answered Feb 3 '11 at 5:40
sysadmin1138♦sysadmin1138
117k17145281
The Steal percentage (documented in the mpstat man-page) is indeed the hypervisor telling your VM that it can't have CPU resources the VM would otherwise use. This percentage is regulated in part by Amazon's CPU limiting, and VM load on that specific host. I/O load is monitored through the %io stat.
You will see this most often on their t class of instances that use a CPU credit model for regulating performance. If you're seeing high percentages, chances are good you're running out of CPU credits.
answered Feb 3 '11 at 5:40
sysadmin1138♦sysadmin1138
117k17145281
edited Apr 12 '17 at 16:03
answered Feb 3 '11 at 5:40
sysadmin1138♦sysadmin1138
117k17145281
answered Feb 3 '11 at 5:40
sysadmin1138♦sysadmin1138
117k17145281
answered Feb 3 '11 at 5:40
sysadmin1138♦sysadmin1138
117k17145281
117k17145281
ahh ... I was looking in thetopman-page. So it could indeed be because I am on a machine that is getting used heavily by another user. On one of my EC2 instances I have seen it get as high as 65%
– Ben
Feb 3 '11 at 16:59
@Ben Yeah, the fact that the info isn't in thetopman page makes this harder than it needs to be. The stuff I've seen online suggests that certain EC2 machine types can peak as high as 70%.
– sysadmin1138♦
Feb 3 '11 at 17:50
add a comment |
ahh ... I was looking in thetopman-page. So it could indeed be because I am on a machine that is getting used heavily by another user. On one of my EC2 instances I have seen it get as high as 65%
– Ben
Feb 3 '11 at 16:59
@Ben Yeah, the fact that the info isn't in thetopman page makes this harder than it needs to be. The stuff I've seen online suggests that certain EC2 machine types can peak as high as 70%.
– sysadmin1138♦
Feb 3 '11 at 17:50
ahh ... I was looking in the
top man-page. So it could indeed be because I am on a machine that is getting used heavily by another user. On one of my EC2 instances I have seen it get as high as 65%– Ben
Feb 3 '11 at 16:59
ahh ... I was looking in the
top man-page. So it could indeed be because I am on a machine that is getting used heavily by another user. On one of my EC2 instances I have seen it get as high as 65%– Ben
Feb 3 '11 at 16:59
@Ben Yeah, the fact that the info isn't in the
top man page makes this harder than it needs to be. The stuff I've seen online suggests that certain EC2 machine types can peak as high as 70%.– sysadmin1138♦
Feb 3 '11 at 17:50
@Ben Yeah, the fact that the info isn't in the
top man page makes this harder than it needs to be. The stuff I've seen online suggests that certain EC2 machine types can peak as high as 70%.– sysadmin1138♦
Feb 3 '11 at 17:50
add a comment |
man sar's
Show the percentage of time spent in involuntary wait by the virtual CPU or CPUs while
the hypervisor was servicing another virtual processor.
answered Feb 3 '11 at 5:34
poigepoige
7,09211437
add a comment |
man sar's
Show the percentage of time spent in involuntary wait by the virtual CPU or CPUs while
the hypervisor was servicing another virtual processor.
answered Feb 3 '11 at 5:34
poigepoige
7,09211437
add a comment |
man sar's
Show the percentage of time spent in involuntary wait by the virtual CPU or CPUs while
the hypervisor was servicing another virtual processor.
answered Feb 3 '11 at 5:34
poigepoige
7,09211437
man sar's
Show the percentage of time spent in involuntary wait by the virtual CPU or CPUs while
the hypervisor was servicing another virtual processor.
answered Feb 3 '11 at 5:34
poigepoige
7,09211437
answered Feb 3 '11 at 5:34
poigepoige
7,09211437
answered Feb 3 '11 at 5:34
poigepoige
7,09211437
answered Feb 3 '11 at 5:34
poigepoige
7,09211437
7,09211437
add a comment |
add a comment |
Steal load accounts for time when your VM wanted to run something, but the hypervisor chose to run something else instead.
answered Feb 3 '11 at 5:36
Joel KJoel K
4,80712532
add a comment |
Steal load accounts for time when your VM wanted to run something, but the hypervisor chose to run something else instead.
answered Feb 3 '11 at 5:36
Joel KJoel K
4,80712532
add a comment |
Steal load accounts for time when your VM wanted to run something, but the hypervisor chose to run something else instead.
answered Feb 3 '11 at 5:36
Joel KJoel K
4,80712532
Steal load accounts for time when your VM wanted to run something, but the hypervisor chose to run something else instead.
answered Feb 3 '11 at 5:36
Joel KJoel K
4,80712532
answered Feb 3 '11 at 5:36
Joel KJoel K
4,80712532
answered Feb 3 '11 at 5:36
Joel KJoel K
4,80712532
answered Feb 3 '11 at 5:36
Joel KJoel K
4,80712532
4,80712532
add a comment |
add a comment |
Steal Time or stolen time, mean the amount of time that your host in VM is ready to run (some instruction), but could not do this because other's VM competing for the CPU. When the value get bigger, this is indicate that your vm getting slow or stall. So keep this value as minimum as possible.
answered Mar 13 '15 at 4:24
Joko SudiroJoko Sudiro
412
add a comment |
Steal Time or stolen time, mean the amount of time that your host in VM is ready to run (some instruction), but could not do this because other's VM competing for the CPU. When the value get bigger, this is indicate that your vm getting slow or stall. So keep this value as minimum as possible.
answered Mar 13 '15 at 4:24
Joko SudiroJoko Sudiro
412
add a comment |
Steal Time or stolen time, mean the amount of time that your host in VM is ready to run (some instruction), but could not do this because other's VM competing for the CPU. When the value get bigger, this is indicate that your vm getting slow or stall. So keep this value as minimum as possible.
answered Mar 13 '15 at 4:24
Joko SudiroJoko Sudiro
412
Steal Time or stolen time, mean the amount of time that your host in VM is ready to run (some instruction), but could not do this because other's VM competing for the CPU. When the value get bigger, this is indicate that your vm getting slow or stall. So keep this value as minimum as possible.
answered Mar 13 '15 at 4:24
Joko SudiroJoko Sudiro
412
answered Mar 13 '15 at 4:24
Joko SudiroJoko Sudiro
412
answered Mar 13 '15 at 4:24
Joko SudiroJoko Sudiro
412
answered Mar 13 '15 at 4:24
Joko SudiroJoko Sudiro
412
412
add a comment |
add a comment |
Steal time is the percentage of time a virtual CPU (vCPU) has to wait to run on a Physical CPU (pCPU) while the hypervisor is servicing another virtual CPU (vCPU).
full credit to source
answered yesterday
grepitgrepit
1073
add a comment |
Steal time is the percentage of time a virtual CPU (vCPU) has to wait to run on a Physical CPU (pCPU) while the hypervisor is servicing another virtual CPU (vCPU).
full credit to source
answered yesterday
grepitgrepit
1073
add a comment |
Steal time is the percentage of time a virtual CPU (vCPU) has to wait to run on a Physical CPU (pCPU) while the hypervisor is servicing another virtual CPU (vCPU).
full credit to source
answered yesterday
grepitgrepit
1073
Steal time is the percentage of time a virtual CPU (vCPU) has to wait to run on a Physical CPU (pCPU) while the hypervisor is servicing another virtual CPU (vCPU).
full credit to source
answered yesterday
grepitgrepit
1073
answered yesterday
grepitgrepit
1073
answered yesterday
grepitgrepit
1073
answered yesterday
grepitgrepit
1073
1073
add a comment |
add a comment |
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