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https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/kernelextension/async_io_subsys.html
Asynchronous I/O Subroutines The 64-bit subroutines that are listed in this section along with their purpose are provided for performing AIO. Subroutines Affected by Asynchronous I/O The existing subroutines that are listed in this section are affected by AIO. 64-bit Enhancements AIO has been enhanced to support 64-bit enabled applications.
http://www.360doc.com/content/09/0212/23/98883_2529182.shtml
Reading About the Linux Kernel AIO Design. Asynchronous I/O Support Linux 2.5, Ottawa Linux Symposium 2003 Covers the AIO design for 2.6, including the filesystem AIO implementation that's currently in the -mm tree, and some performance results for O_DIRECT AIO using rawiobench.
https://www.kernel.org/doc/ols/2003/ols2003-pages-351-366.pdf
This paper describes the Asynchronous I/O (AIO) support in the Linux® 2.5 kernel, addi-tional functionality available as patchsets, and plans for further improvements. More specifi-cally, the following topics are treated in some depth: • Asynchronous filesystem I/O • Asynchronous direct I/O • Asynchronous vector I/OCited by: 19
https://www.ibm.com/support/pages/tuning-asynchronous-io-kernel-parameters-avoid-error-kaio-out-resource-hp-ux
Please contact HP-UX OS support for more information about these parameters and their management. Related URL Tuning Kernel Asynchronous IO (KAIO) for IBM Informix o
https://github.com/unigent/openwrt-3.10.14/blob/master/config/Config-kernel.in
Compile the kernel with early printk support. This is only useful for debugging purposes to send messages: over the serial console in early boot. Enable this to debug early boot problems. config KERNEL_AIO: bool "Compile the kernel with asynchronous IO support" default n: config KERNEL_DIRECT_IO: bool "Compile the kernel with direct IO support ...
https://stackoverflow.com/questions/28999765/how-does-the-linux-kernel-handle-asynchronous-i-o-aio-requests
Multiple sync I/O requests results in the same benefits as multiple async I/O requests. The main differences between asynchronous and synchronous I/O come down to how I/O & processes scheduling and to the programming model. Both async & sync I/O can squeeze the same IOPS/throughput from a storage device if done right.
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/5/html/tuning_and_optimizing_red_hat_enterprise_linux_for_oracle_9i_and_10g_databases/chap-oracle_9i_and_10g_tuning_guide-enabling_asynchronous_io_and_direct_io_support
Asynchronous I/O permits Oracle to continue processing after issuing I/Os requests which leads to higher I/O performance. Red Hat Enterprise Linux also allows Oracle to issue multiple simultaneous I/O requests with a single system call. This reduces context switch overhead and allows the kernel to optimize disk activity.
https://stackoverflow.com/questions/13407542/is-there-really-no-asynchronous-block-i-o-on-linux
So, according to the latest kernel documentation I can find, Linux does not yet have a mature, kernel-based asynchronous I/O model. And, if I assume that the documented model is actually mature, it still doesn't support partial I/O in the sense of recv() vs read().
https://docs.microsoft.com/en-us/windows/win32/fileio/synchronous-and-asynchronous-i-o
However, for relatively fast I/O operations, the overhead of processing kernel I/O requests and kernel signals may make asynchronous I/O less beneficial, particularly if many fast I/O operations need to be made. In this case, synchronous I/O would be better.
http://samba.2283325.n4.nabble.com/questions-aio-settings-in-smb-conf-and-compile-options-td2423853.html
hi, i just have some questions about specific (uncommon) compile options and aio-settings in smb.conf: Asynchronous IO Support ===== "Experimental support for async IO has been added to smbd for certain platforms. To enable this new feature, Samba must be compiled to include the --with-aio-support configure option. In addition, the "aio read size" and "aio write size" to non-zero values.
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