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Fix optimize_change generating infeasible problems

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Mainly happened when removing PG combinations (removing OSDs)

Also randomize OSD combinations when there's a lot of them

Also remove Perl version
This commit is contained in:
Vitaliy Filippov
2020-05-08 16:42:40 +03:00
parent 706a44d4d4
commit aaa054e644
4 changed files with 79 additions and 503 deletions
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lp/test-optimize.js
+23 -3
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@@ -23,17 +23,37 @@ const osd_tree = {
5: 3.63869,
6: 3.63869,
},
/* 100: {
1: 2.72800,
},
200: {
2: 2.72900,
},
300: {
3: 1.87000,
},
400: {
4: 1.87000,
},
500: {
5: 3.63869,
},*/
};
async function run()
{
// Test: add 1 OSD of almost the same size. Ideal data movement could be 1/12 = 8.33%. Actual is ~11.72%
// Test: add 1 OSD of almost the same size. Ideal data movement could be 1/12 = 8.33%. Actual is ~13%
// Space efficiency is ~99.5% in both cases.
let prev = await LPOptimizer.optimize_initial(osd_tree, 256);
LPOptimizer.print_change_stats(prev);
LPOptimizer.print_change_stats(prev, false);
console.log('adding osd.8');
osd_tree[500][8] = 3.58589;
let next = await LPOptimizer.optimize_change(prev.int_pgs, osd_tree);
LPOptimizer.print_change_stats(next);
LPOptimizer.print_change_stats(next, false);
console.log('removing osd.8');
delete osd_tree[500][8];
next = await LPOptimizer.optimize_change(next.int_pgs, osd_tree);
LPOptimizer.print_change_stats(next, false);
}
run().catch(console.error);