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Support arbitrary pg_size in LPOptimizer

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This commit is contained in:
Vitaliy Filippov
2020-07-05 20:28:05 +03:00
parent ec7acc8f3a
commit 9d10a4d057
4 changed files with 165 additions and 81 deletions
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lp/test-optimize.js
+24 -7
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@@ -75,19 +75,36 @@ const crush_tree = [
async function run()
{
let res;
// 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 res = await LPOptimizer.optimize_initial(osd_tree, 256);
// Space efficiency is ~99% in all cases.
console.log('256 PGs, size=2');
res = await LPOptimizer.optimize_initial(osd_tree, 2, 256);
LPOptimizer.print_change_stats(res, false);
console.log('adding osd.8');
console.log('\nAdding osd.8');
osd_tree[500][8] = 3.58589;
res = await LPOptimizer.optimize_change(res.int_pgs, osd_tree);
res = await LPOptimizer.optimize_change(res.int_pgs, osd_tree, 2);
LPOptimizer.print_change_stats(res, false);
console.log('removing osd.8');
console.log('\nRemoving osd.8');
delete osd_tree[500][8];
res = await LPOptimizer.optimize_change(res.int_pgs, osd_tree);
res = await LPOptimizer.optimize_change(res.int_pgs, osd_tree, 2);
LPOptimizer.print_change_stats(res, false);
res = await LPOptimizer.optimize_initial(LPOptimizer.flatten_tree(crush_tree, {}, 1, 3), 256);
console.log('\n256 PGs, size=3');
res = await LPOptimizer.optimize_initial(osd_tree, 3, 256);
LPOptimizer.print_change_stats(res, false);
console.log('\nAdding osd.8');
osd_tree[500][8] = 3.58589;
res = await LPOptimizer.optimize_change(res.int_pgs, osd_tree, 3);
LPOptimizer.print_change_stats(res, false);
console.log('\nRemoving osd.8');
delete osd_tree[500][8];
res = await LPOptimizer.optimize_change(res.int_pgs, osd_tree, 3);
LPOptimizer.print_change_stats(res, false);
console.log('\n256 PGs, size=3, failure domain=rack');
res = await LPOptimizer.optimize_initial(LPOptimizer.flatten_tree(crush_tree, {}, 1, 3), 3, 256);
LPOptimizer.print_change_stats(res, false);
}