AIO

And for that matter, new code might be able to implement only AIO and thereby simplify quite a lot of things.

In a few rare cases, however, it may be beneficial to make AIO available to your users.

One more thing. . . the "retry" mechanism in AIO is something you'll probably have to use. It's still getting changed around a bit though.

Requests for access to particular information should be addressed to our AIO who will deal with each request in accordance with the Code.

The following list is a description of parameters used to monitor the AIO subsystem.

The design of the AIO subsystem includes the ability to cancel outstanding operations.

If your system does not support AIO, then DB2 will not implement this feature.

fastpath: AIO requests that raw logical volumes get passed directly to the disk layer.

Amphenol Industrial Operations (AIO), division of Amphenol Corporation, was founded in 2001.

The aio_ operations can be synchronous.

Character drivers, however, have a synchronous API, and will not support AIO without some additional work.

For most char drivers, there is little benefit to be gained from AIO support.

The minserver and maxserver parameters, as they relate to AIO servers, are now tuned per each CPU tunable.

In this case, you should configure only one AIO VP, plus two additional AIO VPs for every buffered file chunk.

The major difference between aio and posixaio is that the two involve different parameter passing, so you really need to configure both.

In our case, AIO servers are not a system bottleneck.

These can only be changed by AIX, and they are set to 1 only when AIO kernel extensors are used and pinned.

To use AIO, library libaio-0. 3. 96 or later must be installed and your kernel must support AIO.

On occasion, I'm asked what is the difference between aio and posixaio.

Kernels 2. 6 and above support AIO; you will need to check with your distribution vendor for support if running a 2. 4 kernel.

The tag tap: aio is used to represent a logical disk based on the image file, while the tag phy represents a physical disk.

With AIX 6. 1 AIO subsystems are now loaded by default and not activated.

To enable AIO on Linux, you must set the DB2 registry variable DB2LINUXAIO (using the command shown below) and restart DB2.

We can monitor the AIO subsystem by using either iostat or nmon (see Listing 8).

DB2 page cleaners can make use of AIO to more effectively use system resources.

AIO; American for Indian Opportunity;

The so-called "synchronous iocb's" allow the AIO subsystem to be used synchronously when need be. The macro

AIO Analog Input And Output