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"UPDATEV" shim?

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	"UPDATEV" shim? by kevin brintnall :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Tobi, What should we do about "UPDATEV" until we have support in rrdcached? Currently the client code will just abort "UPDATEV" requests. This may cause problems in an environment that uses both "UPDATE" and "UPDATEV"... it's probably desirable to set $RRDCACEHD_ADDRESS for the former, but it's impossible for the latter. I see a couple decent options: - "FLUSH" the file, then operate directly on it (race condition with new updates?) - Implement "UPDATEV" in the daemon. How does this affect 1.4 release timing? -- kevin brintnall =~ /kbrint@.../ _______________________________________________ rrd-developers mailing list rrd-developers@... https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
	Re: "UPDATEV" shim? by Tobias Oetiker-3 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Hi Kevin, Yesterday kevin brintnall wrote: > Tobi, > > What should we do about "UPDATEV" until we have support in rrdcached? > > Currently the client code will just abort "UPDATEV" requests. This may > cause problems in an environment that uses both "UPDATE" and "UPDATEV"... > it's probably desirable to set $RRDCACEHD_ADDRESS for the former, but it's > impossible for the latter. > > I see a couple decent options: > > - "FLUSH" the file, then operate directly on it (race condition with new > updates?) tis will have odd effects for people who assume update to be working remotely ... > - Implement "UPDATEV" in the daemon. How does this affect 1.4 release > timing? well you estimated that it will be quite some work ... I would like to see this in 1.5 ... the 1.4rc does not seem to be causing much of an echo, so I guess I will be releasing 1.4.0 sometime next week. cheers tobi > -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland http://it.oetiker.ch tobi@... ++41 62 775 9902 / sb: -9900 _______________________________________________ rrd-developers mailing list rrd-developers@... https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
	Re: "UPDATEV" shim? by kevin brintnall :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message >> - "FLUSH" the file, then operate directly on it (race condition with new >> updates?) > > tis will have odd effects for people who assume update to be > working remotely ... True. This is probably a better temporary solution: On "updatev", the server flushes an pending updates, then calls another rrd_update_r() to produce the output for "updatev". It doesn't perform as well due to the frequent flushes, but it's an easy start. > I would like to see this in 1.5 ... the 1.4rc does not seem to be > causing much of an echo, so I guess I will be releasing 1.4.0 > sometime next week. Is it worth trying the above simplified "updatev" support in 1.4? I don't know how common "updatev" is among users... -- kevin brintnall =~ /kbrint@.../ _______________________________________________ rrd-developers mailing list rrd-developers@... https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
	Re: "UPDATEV" shim? by Tobias Oetiker-3 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Hi Kevin, Yesterday kevin brintnall wrote: > >> - "FLUSH" the file, then operate directly on it (race condition with new > >> updates?) > > > > tis will have odd effects for people who assume update to be > > working remotely ... > > True. This is probably a better temporary solution: > > On "updatev", the server flushes an pending updates, then calls another > rrd_update_r() to produce the output for "updatev". It doesn't perform as > well due to the frequent flushes, but it's an easy start. that sounds reasonable ... > > I would like to see this in 1.5 ... the 1.4rc does not seem to be > > causing much of an echo, so I guess I will be releasing 1.4.0 > > sometime next week. > > Is it worth trying the above simplified "updatev" support in 1.4? I don't > know how common "updatev" is among users... I don't know a use-case where people mix update and updatev ... as updatev uses the rrd_info method, to return its data, it may be a wee bit complex to make this work across rrdcached, so from my point of view, a complaint from rrdtool updatev when called with the daemon enabled would be all that is required ... cheers tobi -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland http://it.oetiker.ch tobi@... ++41 62 775 9902 / sb: -9900 _______________________________________________ rrd-developers mailing list rrd-developers@... https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers