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-rw-r--r--lib/kernel/src/file.erl3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/kernel/src/file.erl b/lib/kernel/src/file.erl
index 1007f04413..1076e02422 100644
--- a/lib/kernel/src/file.erl
+++ b/lib/kernel/src/file.erl
@@ -1227,7 +1227,8 @@ change_time(Name, {{AY, AM, AD}, {AH, AMin, ASec}}=Atime,
%% Send data using sendfile
%%
--define(MAX_CHUNK_SIZE, (1 bsl 20)*20). %% 20 MB, has to fit in primary memory
+%% 1 MB, Windows seems to behave badly if it is much larger then this
+-define(MAX_CHUNK_SIZE, (1 bsl 20)).
-spec sendfile(RawFile, Socket, Offset, Bytes, Opts) ->
{'ok', non_neg_integer()} | {'error', inet:posix() |