diff options
| author | Charles Manning <cdhmanning@gmail.com> | 2010-08-19 16:00:15 +1200 |
|---|---|---|
| committer | Charles Manning <cdhmanning@gmail.com> | 2010-08-19 16:00:15 +1200 |
| commit | aa8454786457b8b3144e8859da15ac3719cc0602 (patch) | |
| tree | a46417c81f9ed04cc022394ceb8b09d7bbdfeb68 /yaffs_guts.c | |
| parent | b76bff5557ccc92df456fd7b1cd13c8b061cda07 (diff) | |
yaffs Tweak gc parameters
This will reduce unnecessary garbace collection by limiting in-thread garbage
collection to when the garbage > 3/4 of the free space.
This should push more gc into background and make the write path faster.
Signed-off-by: Charles Manning <cdhmanning@gmail.com>
Diffstat (limited to 'yaffs_guts.c')
| -rw-r--r-- | yaffs_guts.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/yaffs_guts.c b/yaffs_guts.c index 389a57c..75eeb84 100644 --- a/yaffs_guts.c +++ b/yaffs_guts.c @@ -2435,7 +2435,16 @@ static unsigned yaffs_FindBlockForGarbageCollection(yaffs_Device *dev, threshold = dev->param.nChunksPerBlock; iterations = nBlocks; } else { - int maxThreshold = dev->param.nChunksPerBlock/2; + int maxThreshold; + + if(background) + maxThreshold = dev->param.nChunksPerBlock/2; + else + maxThreshold = dev->param.nChunksPerBlock/8; + + if(maxThreshold < YAFFS_GC_PASSIVE_THRESHOLD) + maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD; + threshold = background ? (dev->gcNotDone + 2) * 2 : 0; if(threshold <YAFFS_GC_PASSIVE_THRESHOLD) @@ -2537,10 +2546,8 @@ static int yaffs_CheckGarbageCollection(yaffs_Device *dev, int background) int aggressive = 0; int gcOk = YAFFS_OK; int maxTries = 0; - int minErased; int erasedChunks; - int checkpointBlockAdjust; if(dev->param.gcControl && @@ -2568,6 +2575,9 @@ static int yaffs_CheckGarbageCollection(yaffs_Device *dev, int background) if (dev->nErasedBlocks < minErased) aggressive = 1; else { + if(!background && erasedChunks > (dev->nFreeChunks / 4)) + break; + if(dev->gcSkip > 20) dev->gcSkip = 20; if(erasedChunks < dev->nFreeChunks/2 || |