Mercurial > dovecot > core-2.2
changeset 20100:1a75fdc0744a
lib-index: Use a bit larger initial records buffer size
For example with a mailbox having 160k messages the buffer size is around
10MB. Adding just 1% more space to it allows a lot more appends before the
buffer needs to be realloced. This reduces CPU usage quite a lot.
| author | Timo Sirainen <timo.sirainen@dovecot.fi> |
|---|---|
| date | Fri, 29 Apr 2016 14:07:05 +0300 |
| parents | c89167e445fd |
| children | a0a751e444d3 |
| files | src/lib-index/mail-index-map.c |
| diffstat | 1 files changed, 3 insertions(+), 1 deletions(-) [+] |
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--- a/src/lib-index/mail-index-map.c Fri Apr 29 13:55:33 2016 +0300 +++ b/src/lib-index/mail-index-map.c Fri Apr 29 14:07:05 2016 +0300 @@ -327,7 +327,9 @@ size_t size; size = src->records_count * record_size; - dest->buffer = buffer_create_dynamic(default_pool, I_MAX(size, 1024)); + /* +1% so we have a bit of space to grow. useful for huge mailboxes. */ + dest->buffer = buffer_create_dynamic(default_pool, + size + I_MAX(size/100, 1024)); buffer_append(dest->buffer, src->records, size); dest->records = buffer_get_modifiable_data(dest->buffer, NULL);