Qos show front_concur
Function
Example
View existing cache partitions and concurrency usage of each priority in the current storage system.
admin:/diagnose>Qos show front_concur Maximum system concur : 1024 Refused system concur : 0 Max single LUN concur : 2048 Frontconcur io in : 0 Frontconcur io back : 0 Current left IO in queues : 0 Priority weight : 0 40 0 32 25 0 0 0 Cache partition(0) information: Current max total concur : 1024 Current total concur (include waiting io): 0 Current left IO number in this queue : 0 Current total concur (actual num) : 46 priority maxConcur concurUsed NotSatisfyCnt AllIo LeftIo maxUsedConcur maxWaitIONum adjustNumber defaultMaxConcur --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- 0 1 0 0 0 0 0 0 723 1 1 12 0 0 0 0 0 0 723 422 2 1 0 0 0 0 0 0 723 1 3 13 0 0 0 0 0 0 723 337 4 16 0 0 0 0 0 0 723 263 5 1 0 0 0 0 0 0 723 1 6 1 0 0 0 0 0 0 723 1 7 1 0 0 0 0 0 0 723 1
System Response
The following table describes the parameter meanings.
Parameter |
Meaning |
---|---|
maximum system concur | Maximum system concurrencies. |
Refused system concur | Number of concurrencies that exceed the maximum system concurrencies and are refused. |
max single LUN concur | Maximum concurrencies of a single LUN. |
Frontconcur io in | Number of I/Os received by front-end concurrencies. |
Frontconcur io back | Number of returned I/Os received by frontend concurrencies. |
priority weight | Weight of front-end concurrency priority. |
Current max total concur | Maximum concurrencies of cache partition N. |
current total concur (include waiting io) | Current concurrencies of cache partition N. |
Current left IO number in all priority queues | Number of I/Os in all priority queues. |
Current left IO number in this queue | Number of I/Os in this priority queue. |
Current total concur (actual num) | Total number of current concurrencies. |