| .. SPDX-License-Identifier: CC-BY-SA-2.0-UK |
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| Real-World Examples |
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| This chapter contains real-world examples. |
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| Slow Write Speed on Live Images |
| =============================== |
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| 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 |