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updated LDM documentation

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This commit is contained in:
Yann Collet
2025-02-10 10:46:37 -08:00
committed by Yann Collet
parent f26cc54f37
commit bf218c142a
2 changed files with 20 additions and 18 deletions
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programs/fileio.c
+6 -5
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@@ -1100,11 +1100,12 @@ static void FIO_adjustParamsForPatchFromMode(FIO_prefs_t* const prefs,
FIO_setLdmFlag(prefs, 1);
}
if (cParams.strategy >= ZSTD_btopt) {
DISPLAYLEVEL(3, "[Optimal parser notes] Consider the following to improve patch size at the cost of speed:\n");
DISPLAYLEVEL(3, "- Use --single-thread mode in the zstd cli\n");
DISPLAYLEVEL(3, "- Set a larger targetLength (e.g. --zstd=targetLength=4096)\n");
DISPLAYLEVEL(3, "- Set a larger chainLog (e.g. --zstd=chainLog=%u)\n", ZSTD_CHAINLOG_MAX);
DISPLAYLEVEL(3, "Also consider playing around with searchLog and hashLog\n");
DISPLAYLEVEL(4, "[Optimal parser notes] Consider the following to improve patch size at the cost of speed:\n");
DISPLAYLEVEL(4, "- Set a larger targetLength (e.g. --zstd=targetLength=4096)\n");
DISPLAYLEVEL(4, "- Set a larger chainLog (e.g. --zstd=chainLog=%u)\n", ZSTD_CHAINLOG_MAX);
DISPLAYLEVEL(4, "- Set a larger LDM hashLog (e.g. --zstd=ldmHashLog=%u)\n", ZSTD_LDM_HASHLOG_MAX);
DISPLAYLEVEL(4, "- Set a smaller LDM rateLog (e.g. --zstd=ldmHashRateLog=%u)\n", ZSTD_LDM_HASHRATELOG_MIN);
DISPLAYLEVEL(4, "Also consider playing around with searchLog and hashLog\n");
}
}