[gpfsug-discuss] mmapplypolicy slow

[Jan-Frode Myklebust]

Just guessing, but maybe some «where SNAP_ID('SnapshotName')» is better
than -S 20210104?


?

tir. 3. aug. 2021 kl. 20:59 skrev Peeples, Heath <heathp at hpc.msstate.edu>:

> Yes, that advertisement makes me smile 😊
>
>
>
> I have tried both of those, and they do not seem to make any difference.
> I have also played with the -A and -a parameters with no combination that I
> can find making it any better.
>
>
>
> Thanks for the feedback.
>
>
>
> *From:* gpfsug-discuss-bounces at spectrumscale.org <
> gpfsug-discuss-bounces at spectrumscale.org> *On Behalf Of *Jan-Frode
> Myklebust
> *Sent:* Tuesday, August 3, 2021 1:49 PM
> *To:* gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
> *Subject:* Re: [gpfsug-discuss] mmapplypolicy slow
>
>
>
> So…. the advertisement ssys we should be able to do 1M files/s…
>
> http://files.gpfsug.org/presentations/2018/USA/SpectrumScalePolicyBP.pdf
> <http://secure-web.cisco.com/1qQpvD9F4NtOuzGs8G_8PtFl-CwL-8JNJO1mx5gEbI7QwDLGI58rp5A1Zj3Q1nQoonzr0pdbS8-5R4oc5DLLmaBS6PQJ0HXdquIC5cLIlmasuY6rJfZ_dnC7zPJmBySjicZ0rFC-nrhKEnu-_J-arj4xmzx2VxDYJlbreMnsJfs8xW-c4B_Hnf7N9sPPXQ2b6C8jORSfUogYE0Lue9d2OEn-ITxLZdDzB34linSMOE1kYikuG5ewgP6p0nhcznywEWQr_aE1zvb_kgT9pW4ldt39RkTfGbH-O72Aa-sBxa9NilSUt8K-5wXh6KkXTvTln/http%3A%2F%2Ffiles.gpfsug.org%2Fpresentations%2F2018%2FUSA%2FSpectrumScalePolicyBP.pdf>
>
>
>
> First I  would try is if maybe limiting which nodes are used for the
> processing helps. Maybe limit to the NSD-servers (-N nodenames) ?
>
>
>
> Also,  --choice-algorithm fast might help..?
>
>
>
>
>
>
>
>   -jf
>
>
>
>
>
> tir. 3. aug. 2021 kl. 20:18 skrev Peeples, Heath <heathp at hpc.msstate.edu>:
>
> I am trying to use mmapplypolicy to determine what files are modified in a
> particular snapshop.  Below I have the policy and mmapplypolicy parameters
> I am using.  It is taking 3-4 hours to list these files. There are roughly
> 176M files.  This is running on a DDN Gridscaler 12K system.   Seems to me
> after seeing others posts we should be able to run this much quicker.  Any
> help would be appreciated.
>
>
>
>
>
> mmapplypolicy fs2 -S 20210104 -I defer -A 175 -a 72 -B 10000  -N all -g
> /fs1/tmp/heath -P /fs2/tmp/snaps/heath.pol -f
> /fs2/tmp/snaps/heath/output/20210104
>
>
>
> RULE 'find_mods' list 'mods'
>
> DIRECTORIES_PLUS
>
> WEIGHT(0)
>
> SHOW( VARCHAR(USER_ID) || ' ' || varchar(FILE_SIZE) || ' ' ||
> varchar(MODIFICATION_SNAPID) )
>
>
>
>
>
> Heath
>
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