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Re: [libvirt] [PATCH] Increase size of buffer for xend response

On 09/01/2011 06:36 PM, Jim Fehlig wrote:
On systems with many pcpus, the sexpr returned by xend can be quite
large for dom0 when it is configured to have #vcpus = #pcpus (default).
E.g. on a 80 pcpu system, where dom0 had 80 vcpus, the sexpr details
for dom0 was 73817 bytes!  Increase maximum buffer size to 256k.
  src/xen/xend_internal.c |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/xen/xend_internal.c b/src/xen/xend_internal.c
index 957cd17..1fdebe1 100644
--- a/src/xen/xend_internal.c
+++ b/src/xen/xend_internal.c
@@ -56,7 +56,7 @@
   * The number of Xen scheduler parameters

-#define XEND_RCV_BUF_MAX_LEN 65536
+#define XEND_RCV_BUF_MAX_LEN 262144

I'd write this as:

#define XEND_RCV_BUF_MAX_LEN (256 * 1024)

for a bit more legibility.  ACK with that change.

Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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