US 9,176,672 B2 · Input/output (I/O) command aggregation

Abstract

Systems and techniques relating to input/output (I/O) command aggregation include, according to at least one implementation, a method including receiving a first command from a device driver through interface hardware for accessing a storage device; identifying the received command as an aggregation command having a tag corresponding to consolidated command information; communicating a transfer ready notification to the device driver; receiving the consolidated command information from the device driver, wherein the consolidated command information includes memory addresses and data transfer counts for a defined quantity of aggregated I/O commands or for aggregated I/O commands that are received within a defined period of time; storing the consolidated command information in memory; receiving a second command including the tag corresponding to the consolidated command information; and processing the second command with respect to the storage device based on the memory addresses and the data transfer counts in the consolidated command information.

Claims19

Dependent claims

A method comprising:

receiving a first command from a device driver through interface hardware for accessing a storage device;
identifying the received command as an aggregation command having a tag corresponding to consolidated command information;
communicating a transfer ready notification to the device driver;
receiving the consolidated command information from the device driver, wherein the consolidated command information includes memory addresses and data transfer counts for a defined quantity of aggregated input/output (I/O) commands or for aggregated I/O commands that are received within a defined period of time;
storing the consolidated command information in memory;
receiving a second command including the tag corresponding to the consolidated command information;
and
processing the second command with respect to the storage device based on the memory addresses and the data transfer counts in the consolidated command information.

5 more elements

A non-transitory computer-readable medium encoding a program operable to cause one or more data processing apparatus to perform operations comprising:

receiving input/output (I/O) commands comprising read and write commands for two or more target storage devices;
grouping the received I/O commands, the grouping comprising entering commands in different device groups for different ones of the two or more target storage devices and entering read commands and write commands for respective target storage devices of the two or more target storage devices into respective separate read groups and write groups;
obtaining I/O command aggregates from the read groups and write groups, wherein each of the I/O command aggregates is an entirely read command aggregate or an entirely write command aggregate for one of the two or more target storage devices;
and
sending the obtained I/O command aggregates to respective ones of the two or more target storage devices;
wherein obtaining the I/O command aggregates from the read groups and write groups comprises generating the I/O command aggregates based on a processing capability of the program on the one or more data processing apparatus and based on an I/O processing strength of the two or more target storage devices.

3 more elements

Dependencies are inferred from the claim text.

Input/output (I/O) command aggregation

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Input/output (I/O) command aggregation

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Abstract

Claims19