Dynamic segment allocation for write requests by a storage system

A storage system comprising:

• a memory;
• and
• a host controller, operatively coupled to the memory, to:
• adjust, during run-time, storage bandwidth for a storage system process responsive to an input output (I/O) write request to write data to the storage system that comprises a plurality of solid-state storage drives, the host controller to:
• determine an allocation share for the storage system process requesting to write the data, the allocation share for the storage system process using at least one of a ratio between a target ratio of open segments assigned to the storage system process and an aggregate of target ratios of open segments assigned to a plurality of storage system processes having open segments or a target number of open segments;
• and
• open a new segment for the storage system process upon determining an open segment usage by the storage system process is under the allocation share for the storage system process.

A non-transitory computer-readable medium that, when executed by a processing device, causes the processing device to:

• adjust, by the processing device during run-time, storage bandwidth for a storage system process responsive to an input output (I/O) write request to write data to the storage system that comprises a plurality of solid-state storage drives having erase blocks that are directly mapped, the processing device to:
• determine an allocation share for the storage system process requesting to write the data, the allocation share for the storage system process using at least one of a ratio between a target ratio of open segments assigned to the storage system process and an aggregate of target ratios of open segments assigned to a plurality of storage system processes having open segments or a target number of open segments;
• and
• open a new segment for the storage system process upon determining an open segment usage by the storage system process is under the allocation share for the storage system process.