Comments (6)
This also requires pmwebd side changes to process compressed archives properly (looking for .xz file extensions, filename generation during ac_refresh timestamping).
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also previously needed:
- testing to confirm that memory-rlimit forced fallback for decompression works in libpcp; i.e., try to keep going with /tmp-based decompression if -ENOMEM
- even better, permit a decompression-buffer memory budget to be set ahead of time (env var?), so we throttle on-the-fly stuff before hitting kernel-level ENOMEM
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@fche is this still a blocker for OSIO? In any case - before embarking on this feature, you mentioned you were going to manually compress a largish archive collection and see how well pmwebd works with transparent decompression (for both memory and CPU resource usage)
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@fche what was are your conclusions after testing? IIRC we discussed this a while back and tentatively concluded the overheads were too high for pmwebd, especially on startup. Is that correct?
from osd-monitor-poc.
The overheads -are- high. But since the need still exists to ease disk usage and/or to allow longer term retention, the capability is still needed.
from osd-monitor-poc.
The overheads -are- high. But since the need still exists to ease disk usage and/or to allow longer term retention, the capability is still needed.
By the way, one way to reduce that overhead somewhat is to keep archives open longer. https://bugzilla.redhat.com/show_bug.cgi?id=1619708#c9
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Related Issues (20)
- activate osd pcp monitoring for fabric8-auth-proxy
- activate pcp pmcd+pmda logging to stderr HOT 3
- replace webapi-guard components with oauth_proxy HOT 3
- fix osd->zabbix feed reliability
- OSO: activate jenkins monitoring HOT 1
- OSO: activate eclipse-ws pod monitoring HOT 1
- OSO: tenant enumeration HOT 1
- OSO: tenant end-user code, instrumentation insertion HOT 1
- PCP dynamic pmlogger HOT 1
- OSD: bayesian & keycloak monitoring HOT 1
- PCP graphite function support HOT 1
- OSO scaleup testing HOT 1
- publish time series access API HOT 2
- OSO: pull data from OSO prometheus server HOT 4
- zabbix low-level-discovery metrics needed HOT 1
- need pcp2zabbix with PMNS_CHANGED / optional-metric tolerance HOT 5
- Enabling monitoring for rhche on dsaas / dsaas-stg and exposing metrics to zabbix HOT 5
- pmdapostgresql regression with >4.2 pcp
- toy jaeger configuration for rhche HOT 1
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