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IDProjectCategoryView StatusDate SubmittedLast Update
0005933OXID eShop (all versions)4.08. Cachepublic2014-10-24 16:442014-12-02 12:35
Reporteritsabug Assigned To 
PrioritynormalSeveritymajorReproducibilityalways
Status closedResolutionno change required 
Product Version4.9.0 / 5.2.0 
Summary0005933: Default cache backend with filesystem eats huge amount of memory
DescriptionWhen the default cache backend is enabled and used with the filesystem connector,
loading huge lists of database objects lets your memory usage explode.
Cache somehow keeps information in memory and does not free them afterwards.
Steps To Reproduce1. Activate the default cache backend with file system as cache connector
2. load many objects, for example with this script:

require_once dirname(__FILE__) . '/../www/bootstrap.php';
$config = oxRegistry::getConfig();
$list = oxDb::getDb(oxDB::FETCH_MODE_ASSOC)->execute("SELECT oxid FROM oxarticles where oxactive = 1");
while($list->EOF === false) {
    $id = $list->fields['oxid'];
    $article = oxNew('oxarticle');
    $article->load($id);
    $list->moveNext();
    var_dump(memory_get_usage());
}

3. execute without default backend cache. the memory does not change that much
4. activate default backend cache and execute it again -> memory usage increases
TagsNo tags attached.
ThemeAzure
BrowserAll
PHP Versionany
Database Versionany

Activities

Linas Kukulskis

2014-12-02 12:35

reporter   ~0010368

this is not a bug. Cachebackend itself has internal cache, which store data requested with cache connector. so if there a lot request from cache its additionally store internally for performance reason for that memory is used. if the use case is to import a lot of data or etc fost likly u do not need cache, so turn of cachebackend usage in this script. config option blCacheActive = false;