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Diffstat (limited to 'Documentation/public-inbox-v2-format.pod')
| -rw-r--r-- | Documentation/public-inbox-v2-format.pod | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Documentation/public-inbox-v2-format.pod b/Documentation/public-inbox-v2-format.pod index 9e284a75..6876989c 100644 --- a/Documentation/public-inbox-v2-format.pod +++ b/Documentation/public-inbox-v2-format.pod @@ -113,9 +113,14 @@ improved with high-quality and high-quantity solid-state storage. Issuing TRIM commands with L<fstrim(8)> was necessary to maintain consistent performance while developing this feature. -Rotational storage devices are NOT recommended for indexing of -large mail archives; but are fine for backup and usable for -small instances. +Rotational storage devices perform significantly worse than +solid state storage for indexing of large mail archives; but are +fine for backup and usable for small instances. + +As of public-inbox 1.6.0, the C<--sequential-shard> option of +L<public-inbox-index(1)> may be used with a high shard count +to ensure individual shards fit into page cache when the entire +Xapian DB cannot. Our use of the L</OVERVIEW DB> requires Xapian document IDs to remain stable. Using L<public-inbox-compact(1)> and |