numam-spdk/scripts/bpf/readv.bt
Jim Harris dca7ef2759 scripts: add bpf/readv.bt
This script captures a histogram of the returned values
from the readv syscall.  It can be useful for analyzing
the efficiency of our sock/posix implementation.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I910eb2e81e3416855cda7a3854982cd02476850e
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7712
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
2021-05-21 08:03:27 +00:00

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tracepoint:syscalls:sys_exit_readv /pid == __PID__/ {
@bytes = hist(args->ret);
}