CP-38343: xenopsd GC memory RRD stats #772
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forget_client leaks a thread, it doesn't actually tell it to finish or join it, just sets a global variable to None. We do not actually daemonize anymore (we use systemd), so wrap the forget_client call in an `if !daemon'. Signed-off-by: Edwin Török <edvin.torok@citrix.com>
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Draft PR, also need to move this to the xen-api repo, but opening it here as draft first, because it'll be easier to backport to Havana. |
lindig
approved these changes
Oct 20, 2021
xc/mem_stats.ml
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| open Gc | ||
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| let ocaml_total = | ||
| let f = kib "ocaml_total" "Total OCaml memory used by %s" in |
Based on xapi_stats.ml, but heavily refactored. Signed-off-by: Edwin Török <edvin.torok@citrix.com>
psafont
reviewed
Oct 22, 2021
psafont
reviewed
Oct 22, 2021
* drop unused code * add more constants for fields * rename GcStat.compute* (although interestingly the slow/expensive stat is the imprecise one) * rename slow to expensive * fix dssf parameter Signed-off-by: Edwin Török <edvin.torok@citrix.com>
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Maybe there is a way to fit this in: the number of used file descriptors would be another useful stat. |
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Does this PR have a future? Is it still possible to rebase it? |
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We probably don't care about backports to Havana (or even Yangtze) on this anymore, so I'm moving this to the XAPI repo, I think it was basically half approved. |
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Moved to xapi-project/xen-api#5522 |
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2 rrds: a quick one every 5s, and a slow one every 2.5m (that does the slower Gc.stat and smaps_rollup query).
I tried to be careful with units, not to mix words and KiB (i.e. always convert everything to KiB before doing arithmetic on them), the old xapi stats was buggy in this regard (and had some hardcoded constants based on word-size=32-bit which is no longer true).