From 0bba9fa6eff84ed13cf433403ec469f91c0bd6e1 Mon Sep 17 00:00:00 2001
From: Sergey Belyakov <68951321+serbel324@users.noreply.github.com>
Date: Mon, 25 Dec 2023 21:58:33 +0300
Subject: [PATCH] Update cost model (#697)

---
 .../vdisk/common/blobstorage_cost_tracker.h          | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/ydb/core/blobstorage/vdisk/common/blobstorage_cost_tracker.h b/ydb/core/blobstorage/vdisk/common/blobstorage_cost_tracker.h
index 84a9449f0561..ba15bd95e941 100644
--- a/ydb/core/blobstorage/vdisk/common/blobstorage_cost_tracker.h
+++ b/ydb/core/blobstorage/vdisk/common/blobstorage_cost_tracker.h
@@ -28,14 +28,14 @@ class TBsCostModelBase {
 
     // Estimated Coefficients
     // cost = A + B * size
-    double WriteA = 2520;
-    double WriteB = 5.7668;
+    double WriteA = 6500;
+    double WriteB = 11.1;
 
     double ReadA = WriteA;
     double ReadB = WriteB;
 
-    double HugeWriteA = 1.26748409e+06;
-    double HugeWriteB = 2.69514462e+01;
+    double HugeWriteA = 6.089e+06;
+    double HugeWriteB = 8.1;
 
 private:
     enum class EMemoryOperationType {
@@ -206,9 +206,9 @@ class TBsCostModelBase {
     // WRITES
     ui64 GetCost(const NPDisk::TEvChunkWrite& ev) const {
         if (ev.PriorityClass == NPriPut::Log) {
-            return EstimatedWriteCost(ev.PartsPtr->Size());
+            return EstimatedWriteCost(ev.PartsPtr->ByteSize());
         } else {
-            return EstimatedHugeWriteCost(ev.PartsPtr->Size());
+            return EstimatedHugeWriteCost(ev.PartsPtr->ByteSize());
         }
     }
 };