2 Jun
2020
2 Jun
'20
1:24 p.m.
the problem with this solution is not the cost of searching the hash map,
it is making this map thread safe.
adding a lock would have a very bad impact on performance.
On Tue, Jun 2, 2020 at 5:53 AM Abhinav Singh <singhabhinav0796(a)gmail.com>
wrote:
One way of doing this is to store vector of req_state
in and
unorderd_map<id,req _state>
But searching through might cause some time latency, so to counter this
I will put a size limit of thousand so that when vector gets big it erases
all its element along with unordered_map.
this will ensure that cost of searching operation will be greatly reduced.
Will this do?
On Mon, 1 Jun 2020, 21:34 Abhinav Singh, <singhabhinav0796(a)gmail.com>
wrote:
Hello everyone,
My `req_state*` is containing spans for a particular request to trace
that request, but as we know req_state is not available everywhere I tried
to insert a req_state variable in CephContext class because every portion
of RGW has access to it and so they will also have access to req_state,
but this wont work because it is on time initialized and when request run
in parallel race condition might occur and traces will be inaccurate.
The Second method I tried was to include req_state in RGWRadosStore and
RGWUserCtl because these are accessible to every function which I want to
trace, but again these also have race condition risk.
Can anyone give me any tip how to make req_state available in all
functions(if not all then majority) particularly this functions like
RGWRadosStore and RGWUserCtl
Thank You.
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