Contention for zfs arc mutex l_evict_lock can cause performance issue and system hang (Doc ID 2143847.1)

Last updated on JULY 29, 2016

Applies to:

Solaris Operating System - Version 10 1/13 U11 to 11.3 [Release 10.0 to 11.0]
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on x86-64 (64-bit)

Symptoms

If the described issue occurs, the system will have high cpu contention in arc_evict_bytes() and eventually system will hang and lots of runnable and onproc threads will be waiting for
ZFS ARC l_evict_lock in arc_evict_bytes().

 



Cause

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