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1 | ******************* | ||
2 | Real-World Examples | ||
3 | ******************* | ||
4 | |||
5 | This chapter contains real-world examples. | ||
6 | |||
7 | Slow Write Speed on Live Images | ||
8 | =============================== | ||
9 | |||
10 | In one of our previous releases (denzil), users noticed that booting off | ||
11 | of a live image and writing to disk was noticeably slower. This included | ||
12 | the boot itself, especially the first one, since first boots tend to do | ||
13 | a significant amount of writing due to certain post-install scripts. | ||
14 | |||
15 | The problem (and solution) was discovered by using the Yocto tracing | ||
16 | tools, in this case 'perf stat', 'perf script', 'perf record' and 'perf | ||
17 | report'. | ||
18 | |||
19 | See all the unvarnished details of how this bug was diagnosed and solved | ||
20 | here: Yocto Bug #3049 | ||