3c6ed5410b
Testing has shown that tq->tq_lock can be highly contended when a large number of small work items are dispatched. The lock hold time is reduced by the following changes: 1) Use exclusive threads in the work_waitq When a single work item is dispatched we only need to wake a single thread to service it. The current implementation uses non-exclusive threads so all threads are woken when the dispatcher calls wake_up(). If a large number of threads are in the queue this overhead can become non-negligible. 2) Conditionally add/remove threads from work waitq Taskq threads need only add themselves to the work wait queue if there are no pending work items. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #32 |
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| config | ||
| include | ||
| lib | ||
| module | ||
| patches | ||
| scripts | ||
| .gitignore | ||
| AUTHORS | ||
| COPYING | ||
| ChangeLog | ||
| DISCLAIMER | ||
| INSTALL | ||
| META | ||
| Makefile.am | ||
| Makefile.in | ||
| PKGBUILD-spl-modules.in | ||
| PKGBUILD-spl.in | ||
| README.markdown | ||
| autogen.sh | ||
| configure | ||
| configure.ac | ||
| spl-modules.spec.in | ||
| spl.spec.in | ||
| spl_config.h.in | ||
README.markdown
The Solaris Porting Layer (SPL) is a Linux kernel module which provides many of the Solaris kernel APIs. This shim layer makes it possible to run Solaris kernel code in the Linux kernel with relatively minimal modification. This can be particularly useful when you want to track upstream Solaris development closely and don’t want the overhead of maintaining a large patch which converts Solaris primitives to Linux primitives.
To build packages for your distribution:
$ ./configure
$ make pkg
Full documentation for building, configuring, and using the SPL can be found at: http://zfsonlinux.org