19702: Increase default ReserveExtraRAM, allow keepstore overhead.

[arvados.git] / lib / dispatchcloud / node_size.go

diff --git a/lib/dispatchcloud/node_size.go b/lib/dispatchcloud/node_size.go
index 7c7643bfc7622fc8c876eba9c2e01d9203385074..8cc63dc208c8c48e3afc47a1dab1435b11a12996 100644 (file)
--- a/lib/dispatchcloud/node_size.go
+++ b/lib/dispatchcloud/node_size.go
@@ -110,7 +110,12 @@ func ChooseInstanceType(cc *arvados.Cluster, ctr *arvados.Container) (best arvad
 
        needRAM := ctr.RuntimeConstraints.RAM + ctr.RuntimeConstraints.KeepCacheRAM
        needRAM += int64(cc.Containers.ReserveExtraRAM)
-       needRAM += int64(cc.Containers.LocalKeepBlobBuffersPerVCPU * needVCPUs * (1 << 26))
+       if cc.Containers.LocalKeepBlobBuffersPerVCPU > 0 {
+               // + 200 MiB for keepstore process + 10% for GOGC=10
+               needRAM += 220 << 20
+               // + 64 MiB for each blob buffer + 10% for GOGC=10
+               needRAM += int64(cc.Containers.LocalKeepBlobBuffersPerVCPU * needVCPUs * (1 << 26) * 11 / 10)
+       }
        needRAM = (needRAM * 100) / int64(100-discountConfiguredRAMPercent)
 
        ok := false