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Measure OSD op/subop latency

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Something is wrong: loopback RTT between OSDs is sometimes as high as 70us (should be 20us or less probably)
This commit is contained in:
Vitaliy Filippov
2020-02-28 12:26:49 +03:00
parent 2be4824a7a
commit c6334afc94
4 changed files with 71 additions and 1 deletions
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osd_send.cpp
+12
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@@ -3,6 +3,10 @@
void osd_t::outbox_push(osd_client_t & cl, osd_op_t *cur_op)
{
assert(cur_op->peer_fd);
if (cur_op->op_type == OSD_OP_OUT)
{
gettimeofday(&cur_op->tv_begin, NULL);
}
if (cl.write_state == 0)
{
cl.write_state = CL_WRITE_READY;
@@ -38,6 +42,14 @@ void osd_t::send_replies()
}
else
{
// Measure execution latency
timeval tv_end;
gettimeofday(&tv_end, NULL);
op_stat_count[cl.write_op->req.hdr.opcode]++;
op_stat_sum[cl.write_op->req.hdr.opcode] += (
(tv_end.tv_sec - cl.write_op->tv_begin.tv_sec)*1000000 +
tv_end.tv_usec - cl.write_op->tv_begin.tv_usec
);
cl.write_buf = &cl.write_op->reply.buf;
cl.write_remaining = OSD_PACKET_SIZE;
cl.write_state = CL_WRITE_REPLY;