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Diffstat (limited to 'documentation/profile-manual/examples.rst')
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diff --git a/documentation/profile-manual/examples.rst b/documentation/profile-manual/examples.rst new file mode 100644 index 0000000000..97a9e9e21a --- /dev/null +++ b/documentation/profile-manual/examples.rst @@ -0,0 +1,24 @@ +.. SPDX-License-Identifier: CC-BY-SA-2.0-UK + +******************* +Real-World Examples +******************* + +| + +This chapter contains real-world examples. + +Slow Write Speed on Live Images +=============================== + +In one of our previous releases (denzil), users noticed that booting off +of a live image and writing to disk was noticeably slower. This included +the boot itself, especially the first one, since first boots tend to do +a significant amount of writing due to certain post-install scripts. + +The problem (and solution) was discovered by using the Yocto tracing +tools, in this case 'perf stat', 'perf script', 'perf record' and 'perf +report'. + +See all the unvarnished details of how this bug was diagnosed and solved +here: Yocto Bug #3049 |