diff options
Diffstat (limited to 'src/mem/SimpleDRAM.py')
| -rw-r--r-- | src/mem/SimpleDRAM.py | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/src/mem/SimpleDRAM.py b/src/mem/SimpleDRAM.py index 7b8e506ac..1f44888e7 100644 --- a/src/mem/SimpleDRAM.py +++ b/src/mem/SimpleDRAM.py @@ -73,15 +73,17 @@ class SimpleDRAM(AbstractMemory): write_buffer_size = Param.Unsigned(32, "Number of write queue entries") read_buffer_size = Param.Unsigned(32, "Number of read queue entries") - # threshold in percent for when to trigger writes and start - # emptying the write buffer as it starts to get full - write_high_thresh_perc = Param.Percent(70, "Threshold to trigger writes") - - # threshold in percentage for when to stop writes if the read - # queue has an entry. An optimisaton to give reads priority if - # sufficient number of writes are scheduled and write queue has - # sufficient number of free entries - write_low_thresh_perc = Param.Percent(0, "Threshold to stop writes") + # threshold in percent for when to forcefully trigger writes and + # start emptying the write buffer + write_high_thresh_perc = Param.Percent(85, "Threshold to force writes") + + # threshold in percentage for when to start writes if the read + # queue is empty + write_low_thresh_perc = Param.Percent(50, "Threshold to start writes") + + # minimum write bursts to schedule before switching back to reads + min_writes_per_switch = Param.Unsigned(16, "Minimum write bursts before " + "switching to reads") # scheduler, address map and page policy mem_sched_policy = Param.MemSched('frfcfs', "Memory scheduling policy") |