Multi-core processor in storage system executing dynamic thread for increased core availability

A method comprising:

• executing a first thread on a first core of a plurality cores of at least one processing device of a storage system in a first mode of operation of a plurality of modes of operation, the first thread, when operating in the first mode of operation:
• polling at least one interface of the storage system associated with the first thread for an indication of data to be processed by the first thread;
• responsive to a detection of an indication of data to be processed by the first thread on the at least one interface associated with the first thread by the polling of the first thread, processing the data based on the indication;
• and
• responsive to the first thread having no remaining data to be processed, suspending execution on the first core if another thread is executing on another core of the plurality of cores and operating in a second mode of operation of the plurality of modes of operation;
• and
• executing the first thread on the first core in the second mode of operation, the first thread, when operating in the second mode of operation:
• polling at least one interface of the storage system associated with a second thread executing on a second core of the plurality of cores and operating in the first mode of operation for an indication of data to be processed by the second thread;
• and
• responsive to a detection of an indication of data to be processed by the second thread on the at least one interface associated with the second thread by the polling of the first thread, causing the second thread to resume execution on the second core.

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing device of a storage system, the at least one processing device comprising a plurality of cores, causes the at least one processing device:

• to execute a first thread on a first core of the plurality cores in a first mode of operation, the first thread, when operating in the first mode of operation, being configured:
• to poll at least one interface of the storage system associated with the first thread for an indication of data to be processed by the first thread;
• responsive to a detection of an indication of data to be processed by the first thread on the at least one interface associated with the first thread by the polling by the first thread, to process the data based on the indication;
• and
• responsive to the first thread having no remaining data to be processed, to suspend execution on the first core if another thread of the plurality of threads is executing on another core of the plurality of cores and operating in a second mode of the plurality of modes of operation;
• to execute the first thread on the first core in the second mode of operation, the first thread, when operating in the second mode of operation, being configured:
• to poll at least one interface of the storage system associated with a second thread operating in the first mode of operation and executing on a second core of the plurality of cores for an indication of data to be processed by the second thread;
• and
• responsive to a detection of an indication of data to be processed by the second thread on the at least one interface associated with the second thread by the polling of the first thread, to cause the second thread to resume execution on the second core.