pespin has posted comments on this change. ( 
https://gerrit.osmocom.org/c/osmo-bsc/+/23234 )

Change subject: stats: add BTS uptime counter
......................................................................


Patch Set 5:

(1 comment)

https://gerrit.osmocom.org/c/osmo-bsc/+/23234/4/src/osmo-bsc/bts.c
File src/osmo-bsc/bts.c:

https://gerrit.osmocom.org/c/osmo-bsc/+/23234/4/src/osmo-bsc/bts.c@586
PS4, Line 586:  int downtime_seconds = BTS_DOWNTIME_SAMPLE_INTERVAL - 
uptime_seconds;
> I appreciate the suggestion but this is now even more complicated. […]
while I still prefer my proposal (due to what I mentioned already about abusing 
stats here), I'm fine with counting uptime as you want. IIRC my important 
comment a while ago regarding that "counting uptime" was on how you planned to 
do it, which you are describing again in your last comment:
"Can we go back to the initial proposal? Every X seconds, I add X seconds of 
uptime to the uptime counter stored in a stat_item. Done"

Adding X every time easily leads to drifting. Why not simply storing a 
"became_up" timestamp in each struct bts whenever the BTS becomes up, and then 
every X seconds do osmo_stat_item_set(bts->bts_statg->items[BTS_STAT_DOWNTIME], 
now()-became_up).
And of course if the BTS is down whenever the callback is called, set the stat 
to 0 or -1 or whatever :)



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Gerrit-Project: osmo-bsc
Gerrit-Branch: master
Gerrit-Change-Id: Ib17674bbe95e828cebff12de9e0b30f06447ef6c
Gerrit-Change-Number: 23234
Gerrit-PatchSet: 5
Gerrit-Owner: iedemam <[email protected]>
Gerrit-Assignee: daniel <[email protected]>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: daniel <[email protected]>
Gerrit-Reviewer: laforge <[email protected]>
Gerrit-Reviewer: pespin <[email protected]>
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Gerrit-Comment-Date: Fri, 30 Apr 2021 18:22:08 +0000
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