Ralf Hildebrandt
2011-Jan-04 12:07 UTC
[Dovecot] Implications of zlib plugin on search operations
Right now I'm compressing all mails older than 31 days and larger than 100k in size. But what implications does this compression have on search queries performed by users (user looking for an old mail containing a certain string). -- Ralf Hildebrandt Gesch?ftsbereich IT | Abteilung Netzwerk Charit? - Universit?tsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt at charite.de | http://www.charite.de
Timo Sirainen
2011-Jan-04 12:23 UTC
[Dovecot] Implications of zlib plugin on search operations
On Tue, 2011-01-04 at 13:07 +0100, Ralf Hildebrandt wrote:> Right now I'm compressing all mails older than 31 days and larger than > 100k in size. > > But what implications does this compression have on search queries > performed by users (user looking for an old mail containing a certain > string).If you're not using any search indexes, then those will be read and uncompressed. So beyond using a little bit more CPU, nothing. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part URL: <http://dovecot.org/pipermail/dovecot/attachments/20110104/1140a92f/attachment-0002.bin>
Ralf Hildebrandt
2011-Jan-04 14:02 UTC
[Dovecot] Implications of zlib plugin on search operations
* Timo Sirainen <tss at iki.fi>:> If you're not using any search indexes, then those will be read and > uncompressed. So beyond using a little bit more CPU, nothing.OK. Another zlib-related question: http://wiki.dovecot.org/Plugins/Zlib mentions "Compression while saving (v2.0+)) -- is there a size threshold for WHEN the compression fires? (e.g. mails larger than 5k) -- Ralf Hildebrandt Gesch?ftsbereich IT | Abteilung Netzwerk Charit? - Universit?tsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt at charite.de | http://www.charite.de