Forum Discussion
SanYang
Cirrus
CirrusHigh CPU utilization for only cpu 0
Hello, I have 26 CPUs in multi thread format but only CPU 0 utilization goes 100 and other CPUs utilization remains under 30%. # tmsh show /sys tmm-info
--------------------------
Sys::TMM: 0.0 ...
Hi SanYang ,
try to run this Command :
tmsh show sys tmm-trafficTo see how is the traffic distributed accross TMMs instances
This Article will help you : https://my.f5.com/manage/s/article/K36483224
- if you found uneven balancing throught tTMM instances , maybe you will need something Like ( F5 DAG ) to adjust this traffic ditribution , For DAG please have a look in this : https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-service-provider-generic-message-administration-13-0-0/5.html
you can configure it on vlans ( GUI or CLI ).
- If you define the correct DAG , you shouldn't see that one of TMM instances CPU is 100 % , Correct DAG value protects your from Context-swiching ( which means one of your TMM is 100% so it couldn't handle the data traffic for clients so this leads to redirect connrctions to another TMM or drop it , also if TMM is fully utilized it may request more resources to handle this high pressure on it whereas the other TMMs not handle this quantity of data traffic )
This is from my perspective , but I want to know the updates till reach the optimal value of TMM CPU maybe I am not fully correct, so I will keep the attention for this thread here 🙂
SanYangHi Mohamed_Ahmed_Kansoh ,
It seems to be evenly distributed.
# tmsh show sys tmm-traffic ------------------------------------------------- Sys::TMM: 0.0 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 49.6T 38.5T Bits Out 17.9T 17.9T Packets In 86.2G 68.8G Packets Out 2.0G 1.7G Current Connections 311 279 Maximum Connections 20.2K 20.2K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 66.9G 66.9G Total Requests 58.6M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 490.0K No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 537 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.2 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 50.4T 41.0T Bits Out 21.4T 21.5T Packets In 96.6G 78.1G Packets Out 2.4G 2.0G Current Connections 1.9K 1.7K Maximum Connections 63.8K 63.3K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 76.5G 76.5G Total Requests 70.4M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 34 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 504 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.4 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 53.8T 44.0T Bits Out 20.5T 20.6T Packets In 100.6G 81.7G Packets Out 2.3G 1.9G Current Connections 58.7K 58.2K Maximum Connections 62.8K 62.1K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 80.5G 80.5G Total Requests 67.3M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 33 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 585 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.6 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 80.9T 46.5T Bits Out 20.1T 20.2T Packets In 149.2G 86.6G Packets Out 2.2G 1.9G Current Connections 1.9K 1.7K Maximum Connections 20.4K 20.3K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 85.5G 85.5G Total Requests 65.7M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 4 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 519 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.8 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 46.4T 37.1T Bits Out 20.1T 20.2T Packets In 89.3G 72.0G Packets Out 2.2G 1.9G Current Connections 1.8K 1.5K Maximum Connections 20.5K 20.4K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 70.6G 70.6G Total Requests 65.8M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 10 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 547 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.10 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 271.8T 257.5T Bits Out 20.0T 20.1T Packets In 132.0G 115.3G Packets Out 2.2G 1.9G Current Connections 1.9K 1.6K Maximum Connections 20.4K 20.4K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 70.4G 70.4G Total Requests 65.5M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 19 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 582 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.12 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 55.1T 42.5T Bits Out 20.1T 20.3T Packets In 98.7G 76.9G Packets Out 2.2G 1.9G Current Connections 1.7K 1.4K Maximum Connections 20.4K 20.4K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 75.8G 75.8G Total Requests 65.7M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 42 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 538 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.14 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 52.9T 40.6T Bits Out 20.0T 20.1T Packets In 92.3G 74.9G Packets Out 2.2G 1.9G Current Connections 1.7K 1.5K Maximum Connections 20.3K 20.3K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 73.1G 73.1G Total Requests 65.5M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 22 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 557 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.16 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 64.9T 47.9T Bits Out 20.0T 20.1T Packets In 110.0G 83.4G Packets Out 2.2G 1.9G Current Connections 1.8K 1.5K Maximum Connections 20.3K 20.3K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 81.8G 81.8G Total Requests 65.6M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 19 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 532 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.18 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 47.1T 37.7T Bits Out 20.0T 20.1T Packets In 81.1G 68.3G Packets Out 2.2G 1.9G Current Connections 1.8K 1.6K Maximum Connections 20.3K 20.3K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 66.9G 66.9G Total Requests 65.5M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 27 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 536 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.20 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 50.0T 38.0T Bits Out 19.8T 19.9T Packets In 89.6G 70.3G Packets Out 2.2G 1.8G Current Connections 1.7K 1.5K Maximum Connections 20.0K 19.9K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 68.8G 68.8G Total Requests 64.7M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 10 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 490 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.22 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 47.1T 37.5T Bits Out 19.8T 19.9T Packets In 89.2G 71.1G Packets Out 2.2G 1.8G Current Connections 1.7K 1.5K Maximum Connections 20.3K 20.2K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 70.0G 70.0G Total Requests 64.9M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 30 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 527 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0 ------------------------------------------------- Sys::TMM: 0.24 ------------------------------------------------- TMM Traffic ClientSide ServerSide Bits In 49.8T 39.3T Bits Out 19.9T 20.0T Packets In 90.7G 73.4G Packets Out 2.2G 1.9G Current Connections 1.8K 1.6K Maximum Connections 20.0K 20.0K Evicted Connections 0 0 Slow Connections Killed 0 0 Total Connections 72.3G 72.3G Total Requests 64.9M - Errors Maintenance Mode 0 Virtual Addr Limit 0 Virtual Server Limit 0 Wrong Address 0 No handler 39 No Staged Handler 0 No license 0 Connection Memory 0 Packets Dropped 546 Packets In Errors 0 Packets Out Errors 0 Connections Redirected 0Hi SanYang,
As I don't see errors in passing traffic and somehow balanced traffic for all TMM instances ( maybe only TMM0.10 handles high connections so it's CPU is +60% ) but over all TMMs CPU is within 20%.
So this is an indication of that TMM0 represents the Total CPU & memory usage in your blade and because you have till 24 tmm instances it gave you 100 % as this is a high number of TMMs.
This is Clarified in this Article : https://my.f5.com/manage/s/article/K02895424Now , you should keen on in the overall CPU & memory usage as average between all TMMs cores.
If you go to ( Statistics >>> Performance reports >>> Chech the CPU & memory graphs )
Also adjust time range ( Last 3 hours then Last week , then last month )
I'm sure you will find the overall Cpu is consistent following the same trend for all other graphs , I mean you will find the overall/average CPU for the ( last month/week/day/hours ) not high or reached to 100%
Do u know if you found this overall CPU reached to 100 % your box will failover immediately.
So I need you to check that performance report and let me know if my analysis is correct or not.
Thanks- SanYang
Hi Mohamed_Ahmed_Kansoh ,
Thanks for your reply.
I checked the charts.
CPU0 has been running at 100% for a while now...