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serialqueue: Tune MIN_REQTIME_DELTA timing

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The MIN_REQTIME_DELTA parameter controls when the host will flush
incomplete message blocks to the mcu.  If the message had a target
time less than 250ms it would result in a flush even if a message
block was not completely full.

In the situation where the host generates lots of queue_step commands
to the point that it fills the mcu move_queue, then it would be
possible for individual queue_step commands to become eligible for
transmit only microseconds apart.  It could also lead to a situation
where the target time was less than 250ms in the future.  The result
could lead to many small message blocks as each became flushed
individually.

Tune the MIN_REQTIME_DELTA to 100ms to reduce the chance of this.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2025-11-24 19:30:35 -05:00
parent a6a6b21e4d
commit 2e5802370c
1 changed files with 1 additions and 1 deletions
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klippy/chelper/serialqueue.c
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@@ -107,7 +107,7 @@ struct serialqueue {
#define MIN_RTO 0.025 #define MIN_RTO 0.025
#define MAX_RTO 5.000 #define MAX_RTO 5.000
#define MAX_PENDING_BLOCKS 12 #define MAX_PENDING_BLOCKS 12
#define MIN_REQTIME_DELTA 0.250 #define MIN_REQTIME_DELTA 0.100
#define MIN_BACKGROUND_DELTA 0.005 #define MIN_BACKGROUND_DELTA 0.005
#define IDLE_QUERY_TIME 1.0 #define IDLE_QUERY_TIME 1.0