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Andrew Geisslerf0343792020-11-18 10:42:21 -06001.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
Andrew Geisslerc9f78652020-09-18 14:11:35 -05002
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4Real-World Examples
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6
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8
9This chapter contains real-world examples.
10
11Slow Write Speed on Live Images
12===============================
13
14In one of our previous releases (denzil), users noticed that booting off
15of a live image and writing to disk was noticeably slower. This included
16the boot itself, especially the first one, since first boots tend to do
17a significant amount of writing due to certain post-install scripts.
18
19The problem (and solution) was discovered by using the Yocto tracing
20tools, in this case 'perf stat', 'perf script', 'perf record' and 'perf
21report'.
22
23See all the unvarnished details of how this bug was diagnosed and solved
24here: Yocto Bug #3049