Comments (3)
...especially with #19.
from targets.
Should be private: https://r6.r-lib.org/articles/Introduction.html#finalizers.
from targets.
Actually, R is smart enough to free memory on garbage collection even when we go heavy on reference semantics. We will need a finalizer for the metadata database, but probably not in other situations.
> mem_used()
101 MB
> x <- runif(1e8)
> mem_used()
901 MB
> a <- init_target()
> a$get_cache()$set_value("x", x)
> b <- init_target()
> b$get_cache()$set_value("x", x)
> rm(x)
> gc()
used (Mb) gc trigger (Mb) max used
Ncells 1369770 73.2 2067778 110.5 2067778
Vcells 103072729 786.4 151019151 1152.2 103222981
(Mb)
Ncells 110.5
Vcells 787.6
> mem_used()
901 MB
> rm(a)
> mem_used()
901 MB
> gc()
used (Mb) gc trigger (Mb) max used
Ncells 1369533 73.2 2067778 110.5 2067778
Vcells 103072906 786.4 151019151 1152.2 103222981
(Mb)
Ncells 110.5
Vcells 787.6
> mem_used()
901 MB
> rm(b)
> gc()
used (Mb) gc trigger (Mb) max used (Mb)
Ncells 1369203 73.2 2067778 110.5 2067778 110.5
Vcells 3072857 23.5 120815321 921.8 103222981 787.6
> mem_used()
101 MB
>
from targets.
Related Issues (20)
- Rethink cloud prefix policy
- Refactor network retry code HOT 2
- Dynamic `tar_resources`, `tar_resources_crew` HOT 5
- Pre-compute cloud storage object metadata HOT 1
- Retry cloud requests on HTTP code 429
- Move tar_runtime$file_info caching to the algorithm class HOT 1
- targets:::store_read_object.tar_aws_file - does not pass along endpoint - file targets fail to download HOT 2
- Statistical independence of pseudo-random numbers HOT 54
- Better layouts for tar_visnetwork HOT 2
- Add `tar_config_list()`? HOT 1
- `tar_debug()`? HOT 1
- Allow users to manually set targets to done so they won't be recomputed HOT 2
- Performance of tar_delete(), tar_destroy(), and tar_prune() on the cloud HOT 2
- Cache list_objects_v2() to speed up the file cue for cloud objects HOT 11
- Push to saturated crew controllers HOT 4
- Avoid polling in crew-powered pipelines HOT 2
- Allow following the best practice of not using library()
- Change progress and reporter labels HOT 1
- [BUG] tar_watch times out after a while HOT 1
- Out of memory messaging HOT 1
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from targets.