From 5bb9557265607638a87c78ef03665d32a406db98 Mon Sep 17 00:00:00 2001
From: Michael Hanselmann <hansmi@google.com>
Date: Fri, 11 Jun 2010 19:01:16 +0200
Subject: [PATCH] Disable compression for all intra-cluster imports/exports
Tests have shown that usually we're CPU-bound for intra-cluster
imports/exports. Disabling compression will help with this.
Some versions of OpenSSL, depending on the build options, also
compress transparently. This will need further work in Ganeti.
Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>
---
lib/masterd/instance.py | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/lib/masterd/instance.py b/lib/masterd/instance.py
index 46eaabf10..df0b18754 100644
--- a/lib/masterd/instance.py
+++ b/lib/masterd/instance.py
@@ -996,11 +996,8 @@ def TransferInstanceData(lu, feedback_fn, src_node, dest_node, dest_ip,
each transfer
"""
- # Compress only if transfer is to another node
- if src_node == dest_node:
- compress = constants.IEC_NONE
- else:
- compress = constants.IEC_GZIP
+ # Disable compression for all moves as these are all within the same cluster
+ compress = constants.IEC_NONE
logging.debug("Source node %s, destination node %s, compression '%s'",
src_node, dest_node, compress)
--
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