errno 11 (EAGAIN) in Solaris: meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: a Solaris operation could not proceed immediately and should be retried after the resource becomes available.

Could be also:
Constant	Type	OS
ERROR_BAD_FORMAT	Win32 error	Windows
KERN_ALREADY_IN_SET	Kern return	Mac
ippStsResFloor	Intel Ipp Status	Any
EAGAIN	errno	Linux
EDEADLK	errno	Mac
EAGAIN	errno	Windows
NO_EXCEPTION_HANDLING_SUPPORT	BugCheck Code	Windows

Previous	Next
EDEADLK	EAGAIN

EAGAIN

Temporary resource pressure or nonblocking i/o

EAGAIN is Solaris errno 11 (Resource temporarily unavailable). A Solaris operation could not proceed immediately and should be retried after the resource becomes available.

First determine which resource must become ready. Nonblocking I/O should wait for the interface's readiness mechanism, while process, lock, or memory pressure should be investigated through the corresponding Solaris resource limits and current consumers.

What to check

Check whether the call is a nonblocking socket, STREAMS, file-locking, process-creation, or memory-allocation path.
For event loops, wait for the relevant readiness event instead of retrying in a tight loop.
For process or memory pressure, collect resource-control, swap, LWP, and process-table evidence before changing application logic.

References

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