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| author | Simon Rettberg | 2021-03-26 13:44:47 +0100 |
|---|---|---|
| committer | Simon Rettberg | 2021-03-26 13:44:47 +0100 |
| commit | 3a7891e26aec9e5d15d21a78cb317926d96f51e9 (patch) | |
| tree | 9c221489ad96ca3f6d7207a4b1c171ef0554b294 /inc | |
| parent | [KERNEL] Use sockaddr instead of dnbd3_host_t where possible (diff) | |
| download | dnbd3-3a7891e26aec9e5d15d21a78cb317926d96f51e9.tar.gz dnbd3-3a7891e26aec9e5d15d21a78cb317926d96f51e9.tar.xz dnbd3-3a7891e26aec9e5d15d21a78cb317926d96f51e9.zip | |
[KERNEL] Implement best_count logic for load balancing
Similar logic already exists in the fuse client:
Count how many times in a row a server was fastest when
measuring RTTs, and lower the switching threshold
more the higher the count gets.
Diffstat (limited to 'inc')
| -rw-r--r-- | inc/dnbd3/config/client.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/inc/dnbd3/config/client.h b/inc/dnbd3/config/client.h index f35f673..49d4676 100644 --- a/inc/dnbd3/config/client.h +++ b/inc/dnbd3/config/client.h @@ -8,7 +8,7 @@ #define SOCKET_TIMEOUT_CLIENT_DATA 2 #define SOCKET_TIMEOUT_CLIENT_DISCOVERY 1 -#define RTT_THRESHOLD_FACTOR(us) (((us) * 2) / 3) // 2/3 = current to best must be 33% worse +#define RTT_THRESHOLD_FACTOR(us) (((us) * 3) / 4) // 3/4 = current to best must be 25% worse #define RTT_ABSOLUTE_THRESHOLD (80000) // Or 80ms worse #define RTT_UNREACHABLE 0x7FFFFFFul // Use this value for timeout/unreachable as RTT. Don't set too high or you might get overflows. 0x7FFFFFF = 134 seconds // This must be a power of two: |