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    SubjectRe: [PATCH 16/17] perf, tool: Add dso data caching
    On Sun, Jul 22, 2012 at 02:14:39PM +0200, Jiri Olsa wrote:
    > Adding dso data caching so we don't need to open/read/close,
    > each time we want dso data.
    > The DSO data caching affects following functions:
    > dso__data_read_offset
    > dso__data_read_addr
    > Each DSO read tries to find the data (based on offset) inside
    > the cache. If it's not present it fills the cache from file,
    > and returns the data. If it is present, data are returned
    > with no file read.
    > Each data read is cached by reading cache page sized/aligned
    > amount of DSO data. The cache page size is hardcoded to 4096.
    > The cache is using RB tree with file offset as a sort key.
    > Signed-off-by: Jiri Olsa <>

    Nice idea.

    > ---
    > tools/perf/util/symbol.c | 154 ++++++++++++++++++++++++++++++++++++++++------

    There seem to be an increasing need to move dso related things
    to some util/dso.c file. Just suggesting.

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