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[Qemu-block] [PATCH 0/3] Add block size histogram qapi interface
From: |
zhenwei pi |
Subject: |
[Qemu-block] [PATCH 0/3] Add block size histogram qapi interface |
Date: |
Thu, 20 Jun 2019 16:54:29 +0800 |
Set/Clear block size histograms through new command
x-block-size-histogram-set and show new statistics in
query-blockstats results.
This command has been tested for half year on QEMU-2.12, and we found
that 3K+ virtual machines write 25GB/s totally, the block size
histogram like following:
0 ~ 8k: 58% ~ 62%
8k ~ 32k: 10% ~ 12%
32k ~ 128k: 2% ~ 3%
128K ~ 512K: 24% ~ 26%
512K ~ : ...
And the histogram data help us to optimise backend distributed
storage.
zhenwei pi (3):
block/accounting: rename struct BlockLatencyHistogram
block/accounting: introduce block size histogram
qapi: add block size histogram interface
block/accounting.c | 55 ++++++++++++++++++------
block/qapi.c | 26 ++++++++++-
blockdev.c | 56 ++++++++++++++++++++++++
include/block/accounting.h | 12 ++++--
qapi/block-core.json | 105 ++++++++++++++++++++++++++++++++++++++++++++-
5 files changed, 235 insertions(+), 19 deletions(-)
--
2.11.0
- [Qemu-block] [PATCH 0/3] Add block size histogram qapi interface,
zhenwei pi <=