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[Xen-API] [PATCH 0 of 2] improve VM.copy performance by inspecting BATs,
| To: | xen-api@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-API] [PATCH 0 of 2] improve VM.copy performance by inspecting BATs, speeding up zero scanning |
| From: | David Scott <dave.scott@xxxxxxxxxxxxx> |
| Date: | Fri, 23 Jul 2010 18:23:45 +0100 |
| Delivery-date: | Fri, 23 Jul 2010 10:37:48 -0700 |
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Make VM.copy a lot faster by (i) using BAT data (if available); and (ii) speeding up the zero-scanning On local LVHD, VM.copies of freshly installed guests are much quicker: Guest Previous VM.copy time New VM.copy time Speedup ---------------------------------------------------------------- Debian Lenny 2:11 1:18 40% Windows 7 14:18 7:57 44% Signed-off-by: David Scott <dave.scott@xxxxxxxxxxxxx> OMakefile | 1 + ocaml/xapi/OMakefile | 4 +- ocaml/xapi/sparse_dd.ml | 364 ++++++++++++++++++++++++++++++++++++++++++++++++ xapi.spec | 1 + ocaml/xapi/sm_fs_ops.ml | 117 +++++--------- 5 files changed, 412 insertions(+), 75 deletions(-) _______________________________________________ xen-api mailing list xen-api@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/mailman/listinfo/xen-api |
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