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a9a7a01cf5
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Prakash Surya a9a7a01cf5 Add SPLAT test to exercise slab direct reclaim 
This test is designed to verify that direct reclaim is functioning as
expected.  We allocate a large number of objects thus creating a large
number of slabs.  We then apply memory pressure and expect that the
direct reclaim path can easily recover those slabs.  The registered
reclaim function will free the objects and the slab shrinker will call
it repeatedly until at least a single slab can be freed.

Note it may not be possible to reclaim every last slab via direct reclaim
without a failure because the shrinker_rwsem may be contended.  For this
reason, quickly reclaiming 3/4 of the slabs is considered a success.

This should all be possible within 10 seconds.  For reference, on a
system with 2G of memory this test takes roughly 0.2 seconds to run.
It may take longer on larger memory systems but should still easily
complete in the alloted 10 seconds.

Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #107
2012-05-07 11:55:59 -07:00
cmd Cleanly support debug packages 2012-02-27 14:24:22 -08:00
config Fix distribution detection 2012-03-05 10:38:38 -08:00
include Throttle number of freed slabs based on nr_to_scan 2012-05-07 11:46:15 -07:00
lib Cleanly support debug packages 2012-02-27 14:24:22 -08:00
module Add SPLAT test to exercise slab direct reclaim 2012-05-07 11:55:59 -07:00
patches Reimplement rwlocks for Linux lock profiling/analysis. 2009-09-18 16:09:47 -07:00
scripts Cleanly support debug packages 2012-02-27 14:24:22 -08:00
.gitignore Ignore unsigned module build products 2010-03-11 14:29:17 -08:00
AUTHORS Public Release Prep 2010-05-17 15:18:00 -07:00
autogen.sh Public Release Prep 2010-05-17 15:18:00 -07:00
ChangeLog Prep for spl-0.5.0 tag 2010-08-13 09:33:50 -07:00
configure Fix distribution detection 2012-03-05 10:38:38 -08:00
configure.ac Add make rule for building Arch Linux packages 2011-12-14 16:44:10 -08:00
COPYING Public Release Prep 2010-05-17 15:18:00 -07:00
DISCLAIMER Public Release Prep 2010-05-17 15:18:00 -07:00
INSTALL Public Release Prep 2010-05-17 15:18:00 -07:00
Makefile.am Add the release component to headers 2012-01-18 11:06:26 -08:00
Makefile.in Cleanly support debug packages 2012-02-27 14:24:22 -08:00
META SPL 0.6.0-rc8 2012-03-26 11:57:13 -07:00
PKGBUILD-spl-modules.in Add make rule for building Arch Linux packages 2011-12-14 16:44:10 -08:00
PKGBUILD-spl.in Add make rule for building Arch Linux packages 2011-12-14 16:44:10 -08:00
README.markdown Fix markdown rendering 2010-09-15 09:05:34 -07:00
spl_config.h.in Add --enable-debug-log configure option 2012-02-02 11:27:54 -08:00
spl-modules.spec.in Cleanly support debug packages 2012-02-27 14:24:22 -08:00
spl.spec.in Fix rpm dependencies 2012-01-18 11:24:36 -08:00

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