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author | Damien Le Moal <damien.lemoal@wdc.com> | 2019-07-31 13:32:07 +0900 |
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committer | Jens Axboe <axboe@kernel.dk> | 2019-07-31 08:47:59 -0600 |
commit | cc5e4cb0b61e78f176754cec57d62c7d53d70fc6 (patch) | |
tree | b208eedeb1c691e700a43a4160b8bc577c8e23b1 /lib/zipf.h | |
parent | 029b42ace698eae477c5e261d2f82b191507526b (diff) | |
download | fio-cc5e4cb0b61e78f176754cec57d62c7d53d70fc6.tar.gz fio-cc5e4cb0b61e78f176754cec57d62c7d53d70fc6.tar.bz2 |
bssplit: Fix handling of 0 percentage
If a block size percentage is ispecified as 0 in bssplit, the block size
defined is not ignored by the loop in get_next_buflen(). In particular,
if the first (smallest) block size specified has a 0 percentage, the
loop is existed and that block size used as the next IO size, resulting
in a behavior equivalent to specifying 100%. E.g. using
--bssplit=64k/0,1024k/100 results in 100% of issued IOs to be 64KB
instead of 1MB.
Fix this by ignoring bssplit entries that have a 0 percentage. This is
safe as the initialization of the bssplit array ensure that the sum of
all percentages is always 100, guaranteeing that a block size will be
chosen for the next IO size.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'lib/zipf.h')
0 files changed, 0 insertions, 0 deletions