Tickets :: Comment on [#1163] IMP Memory usage

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Comment	> Hi. > > I have been doing some simple tests with IMP4. It's a great piece of > > software and excellent functionality. > > I'm setting it up to be used by several thousands of clients and although > > it'll run in pretty big machines (a couple of Dual Xeon 2.8Ghz, 2Gb Ram, > > SCSI RAID 6) I am evaluating some more of the cpu/memory intensive > > caracteristics (compression, mime decode, text processing -Filter class-). > > We allow our clients mails up to 13Mb each. Now, I tested IMP with a 8Mb > > attachment and got: > > > > (I started using a 20Mb limit) > > > > PHP Fatal error: Allowed memory size of 20971520 bytes exhausted (tried > > to allocate 10646241 bytes) in /usr/local/lib/php/Horde/MIME/Part.php on > > line 306 > > > > and after moving to 50Mb limit: > > > > PHP Fatal error: Allowed memory size of 50331648 bytes exhausted (tried > > to allocate 10646241 bytes) in /usr/local/lib/php/Horde/MIME/Part.php on > > line 1209 > > > > I think 10646241 is the sizes of the base 64 encoded attachment. > > After a short following of the code, I found lot of memory copies. Don't > > know if they´re unnecesary, but I took a chance and made some changes: > > > > After this: > > Index: lib/MIME/Contents.php > > =================================================================== > > RCS file: /repository/imp/lib/MIME/Contents.php,v > > retrieving revision 1.155 > > diff -u -b -r1.155 Contents.php > > --- lib/MIME/Contents.php 7 Jan 2005 19:09:07 -0000 1.155 > > +++ lib/MIME/Contents.php 14 Jan 2005 15:28:03 -0000 > > @@ -155,15 +155,14 @@ > > * > > * @return string The text of the part. > > / > > - function getBodyPart($id) > > + function &getBodyPart($id) > > { > > - $contents = ''; > > > > if (!isset($this->_bodypart[$id])) { > > $this->_bodypart[$id] = > > @imap_fetchbody($GLOBALS['imp']['stream'], $this->_index, $id, FT_UID); > > } > > > > - return ($contents . $this->_bodypart[$id]); > > + return !empty($this->_bodypart[$id])?$this->_bodypart[$id]:''; > > } > > > > And > > > > Index: Part.php > > =================================================================== > > RCS file: /repository/framework/MIME/MIME/Part.php,v > > retrieving revision 1.178 > > diff -u -b -r1.178 Part.php > > --- Part.php 3 Jan 2005 13:09:09 -0000 1.178 > > +++ Part.php 14 Jan 2005 15:40:09 -0000 > > @@ -301,9 +301,9 @@ > > @param string $contents The part body. > > * @param optional string $encoding The current encoding of the > > contents. > > / > > - function setContents($contents, $encoding = null) > > + function setContents(&$contents, $encoding = null) > > { > > - $this->_contents = $contents; > > + $this->_contents = &$contents; > > $this->_flags['contentsSet'] = true; > > $this->_currentEncoding = (is_null($encoding)) ? > > $this->getCurrentEncoding() : MIME::encoding($encoding, MIME_STRING); > > } > > @@ -382,7 +382,7 @@ > > / > > function transferDecodeContents() > > { > > - $contents = $this->transferDecode(); > > + $contents = &$this->transferDecode(); > > $this->_currentEncoding = $this->_flags['lastTransferDecode']; > > $this->setTransferEncoding($this->_currentEncoding); > > > > @@ -1190,7 +1190,8 @@ > > / > > function transferDecode() > > { > > - $contents = $this->getContents(); > > + > > + $contents = &$this->getContents(); > > $encoding = $this->getCurrentEncoding(); > > > > / If the contents are empty, return now. */ > > > > I was able to download the attachment with the same php.ini settings. Can > > anyone see a problem with this? > > > > Juan
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