Method and apparatus for adjusting I/O channel on virtual platform

A host, comprising:

• a native device;
• a plurality of front devices and a plurality of back devices in a plurality of virtual machines (VMs) operating on the Native Device;
• a data processing module between the front devices and the back devices of the multiple VMs;
• a bridge between the back devices of the multiple VMs and the Native Device;
• a memory;
• a processor coupled to the memory, wherein the memory includes instructions that when executed by the processor cause the data processing module to perform the following:
• count a current average I/O throughput of the VMs;
• increase working threads for processing the VMs between the front devices and the back devices of the VMs when the current average I/O throughput is greater than a first threshold value, wherein the current average I/O throughput of the VMs is less than the first threshold value after the working threads are increased;
• decrease working threads for processing the VMs between the front devices and the back devices of the VMs when the current average I/O throughput is less than a second threshold value, wherein the current average I/O throughput of the multiple VMs is greater than the second threshold value after the working threads are decreased, wherein the first threshold value is greater than the second threshold value;
• and
• separately adjust a mapping relationship between queues in the front devices of the multiple VMs and working threads for processing the VMs, and a mapping relationship between the queues in the back devices of the multiple VMs and working threads for processing the VMs according to working threads for processing the VMs after the increase or decrease, wherein a plurality of data transmission channels are formed between the front devices and the back devices of the VMs.

A computer comprising:

• a memory storing computer-executable instructions;
• a processor configured to execute the computer-executable instructions to cause the computer to perform the following:
• instantiate a plurality of virtual machines (VMs) on the computer;
• count a current average I/O throughput of the VMs;
• increase working threads for processing the VMs between a plurality of front devices and a plurality of back devices of the VMs when the current average I/O throughput is greater than a first threshold value, wherein the current average I/O throughput of the VMs is less than the first threshold value after the working threads are increased,
• decrease working threads for processing the VMs between the front devices and back devices of the VMs when the current average I/O throughput is less than a second threshold value, wherein the current average I/O throughput of the VMs is greater than the second threshold value after the working threads are decreased, wherein the first threshold value is greater than the second threshold value;
• and
• separately adjust, according to working threads for processing the VMs after the increase or decrease, a mapping relationship between queues in the front devices of the VMs and working threads for processing the VMs, and a mapping relationship between queues in the back devices of the VMs and working threads for processing the VMs, wherein a plurality of data transmission channels are formed between the front devices and the back devices of the VMs.