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CHANGELOG: Add section about build options

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Change-Id: I9cbab831496f4bee1f1be36044fc5622474848bd
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/452692
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
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Ben Walker 2019-04-30 10:09:37 -07:00
parent f76c869a10
commit 9bac8515ce
1 changed files with 11 additions and 0 deletions
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CHANGELOG.md
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@ -181,6 +181,17 @@ Changed API of spdk_subsystem_config_json() to no longer be asynchronous.
A bdev module that issues I/O to kernel block devices using the new io_uring Linux kernel
API was added. This module requires liburing.
### build
Options to easily compile with profile guided optimization have been added to
`configure`. To use profile guided optimization with SPDK, run
`./configure --with-pgo-capture`, build SPDK, then run a workload of your
choosing. Then, simply run `./configure --with-pgo-enable` and recompile to
build using the generated profile data. Profile guided optimization can yield
very large performance improvements, especially on GCC 8 and clang 7. This may
be combined with link time optimization which has been available under the
`--enable-lto` configure option for several releases.
## v19.01:
### ocf bdev