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Change how swap is calculated in automatic installation.

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It uses same values as Thus/Anaconda.
Takes into account available disk space (don't use more than 10% of it)
This commit is contained in:
Ramon Buldó 2015-06-25 14:10:56 +02:00 committed by Teo Mrnjavac
parent 7d940454fb
commit 92736c3486
2 changed files with 46 additions and 25 deletions
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70
src/modules/partition/gui/EraseDiskPage.cpp
View File

@ -139,31 +139,6 @@ EraseDiskPage::doAutopartition( Device* dev )
#define MiB * static_cast< qint64 >( 1024 ) * 1024
#define GiB * static_cast< qint64 >( 1024 ) * 1024 * 1024
// If there is enough room for ESP + root + swap, create swap, otherwise don't.
// Physical memory Swap
// <4 GiB 2 * memory (min. 2 GiB) + overallocation
// 4-8 GiB 8 GiB + overallocation
// >8 GiB = memory + overallocation
qint64 suggestedSwapSizeB = 0;
qint64 availableRamB = CalamaresUtils::getPhysicalMemoryB();
qreal overestimationFactor = 1.01;
if ( !availableRamB )
{
availableRamB = CalamaresUtils::getTotalMemoryB();
overestimationFactor = 1.10;
}
if ( availableRamB < 4 GiB )
suggestedSwapSizeB = qMax( 2 GiB, availableRamB * 2 );
else if ( availableRamB >= 4 GiB && availableRamB < 8 GiB )
suggestedSwapSizeB = 8 GiB;
else
suggestedSwapSizeB = availableRamB;
suggestedSwapSizeB *= overestimationFactor;
cDebug() << "Suggested swap size:" << suggestedSwapSizeB / 1024. / 1024. /1024. << "GiB";
// Partition sizes are expressed in MiB, should be multiples of
// the logical sector size (usually 512B).
int uefisys_part_size = 0;
@ -208,12 +183,14 @@ EraseDiskPage::doAutopartition( Device* dev )
bool shouldCreateSwap = false;
qint64 availableSpaceB = ( dev->totalSectors() - firstFreeSector ) * dev->logicalSectorSize();
qint64 suggestedSwapSizeB = swapSuggestion( availableSpaceB );
qint64 requiredSpaceB =
( Calamares::JobQueue::instance()->
globalStorage()->
value( "requiredStorageGB" ).toDouble() + 0.1 + 2.0 ) GiB +
suggestedSwapSizeB;
// If there is enough room for ESP + root + swap, create swap, otherwise don't.
shouldCreateSwap = availableSpaceB > requiredSpaceB;
qint64 lastSectorForRoot = dev->totalSectors() - 1; //last sector of the device
@ -293,3 +270,46 @@ EraseDiskPage::updatePreviews()
layout->addRow( tr( "After:" ), preview );
}
}
qint64
EraseDiskPage::swapSuggestion( const qint64 availableSpaceB ) const {
#define MiB * static_cast< qint64 >( 1024 ) * 1024
#define GiB * static_cast< qint64 >( 1024 ) * 1024 * 1024
// swap(mem) = max(2, 2 * mem), if mem < 2 GiB
// = mem, if 2 GiB <= mem < 8 GiB
// = mem / 2, if 8 GIB <= mem < 64 GiB
// = 4 GiB, if mem >= 64 GiB
qint64 suggestedSwapSizeB = 0;
qint64 availableRamB = CalamaresUtils::getPhysicalMemoryB();
qreal overestimationFactor = 1.01;
if ( !availableRamB )
{
availableRamB = CalamaresUtils::getTotalMemoryB();
overestimationFactor = 1.10;
}
if ( availableRamB < 2 GiB )
suggestedSwapSizeB = qMax( 2 GiB, availableRamB * 2 );
else if ( availableRamB >= 2 GiB && availableRamB < 8 GiB )
suggestedSwapSizeB = availableRamB;
else if ( availableRamB >= 8 GiB && availableRamB < 64 GiB )
suggestedSwapSizeB = availableRamB / 2;
else
suggestedSwapSizeB = 4 GiB;
suggestedSwapSizeB *= overestimationFactor;
// don't use more 10% of available space
qreal maxSwapDiskRatio = 1.10;
qint64 maxSwapSizeB = availableSpaceB * maxSwapDiskRatio;
if ( suggestedSwapSizeB > maxSwapSizeB )
suggestedSwapSizeB = maxSwapSizeB;
cDebug() << "Suggested swap size:" << suggestedSwapSizeB / 1024. / 1024. /1024. << "GiB";
return suggestedSwapSizeB;
}

1
src/modules/partition/gui/EraseDiskPage.h
View File

@ -43,6 +43,7 @@ private:
void setNextEnabled( bool enabled );
void doAutopartition( Device* dev );
void updatePreviews();
qint64 swapSuggestion( const qint64 availableSpaceB ) const;
QListView* m_drivesView;
PartitionCoreModule* m_core;