Until this change we were stripping prefix from object key on satellite side. Because of that we were transferring over network unnecessary data
from DB. This change adjusts iterator SQL queries to use SUBSTRING to
remove prefix on DB side and avoid sending it to satellite.
Benchmark against 'main':
unfortunately "time/op" is very unstable while doing local bench in this
case and sometimes there is no difference in time and sometimes its up to 18%. I never saw results when old solution is faster then new one. Results for "alloc/op" and "allocs/op" are rather consistent.
name old time/op new time/op delta
NonRecursiveListing/Cockroach/listing_no_prefix-8 1.98ms ± 6% 2.05ms ±23% ~ (p=1.000 n=9+10)
NonRecursiveListing/Cockroach/listing_with_prefix-8 3.97ms ± 8% 3.42ms ±20% -13.86% (p=0.005 n=10+10)
NonRecursiveListing/Cockroach/listing_only_prefix-8 8.42ms ±16% 7.58ms ± 5% -9.91% (p=0.002 n=10+10)
name old alloc/op new alloc/op delta
NonRecursiveListing/Cockroach/listing_no_prefix-8 16.7kB ± 0% 16.9kB ± 0% +1.16% (p=0.000 n=10+10)
NonRecursiveListing/Cockroach/listing_with_prefix-8 27.3kB ± 0% 28.2kB ± 0% +3.31% (p=0.000 n=10+10)
NonRecursiveListing/Cockroach/listing_only_prefix-8 60.0kB ± 0% 62.4kB ± 0% +3.93% (p=0.000 n=10+8)
name old allocs/op new allocs/op delta
NonRecursiveListing/Cockroach/listing_no_prefix-8 312 ± 0% 315 ± 0% +0.96% (p=0.000 n=10+10)
NonRecursiveListing/Cockroach/listing_with_prefix-8 526 ± 0% 541 ± 0% +2.85% (p=0.000 n=10+10)
NonRecursiveListing/Cockroach/listing_only_prefix-8 1.16k ± 0% 1.23k ± 0% +5.24% (p=0.000 n=10+10)
Change-Id: I23e501494ededafb2dd5ea903e8e4e313b42e956
This change reverts satellite/metabase/iterator.go of 7390f389c to the
previous version (without optimization) but leaves added benchmarks in
place.
We noticed that this optimization doesn't work and actually elevates
listing times for most buckets, hence the revert until we come up with a
better idea.
Benchmarks:
name old time/op new time/op delta
NonRecursiveListing/Postgres/listing_no_prefix-8 1.30ms ± 4% 4.52ms ± 4% +246.92% (p=0.008 n=5+5)
NonRecursiveListing/Postgres/listing_with_prefix-8 3.26ms ± 3% 4.44ms ± 2% +36.19% (p=0.008 n=5+5)
NonRecursiveListing/Cockroach/listing_no_prefix-8 618µs ± 3% 2225µs ± 2% +259.94% (p=0.008 n=5+5)
NonRecursiveListing/Cockroach/listing_with_prefix-8 1.81ms ± 5% 2.60ms ± 5% +43.96% (p=0.008 n=5+5)
Updates storj/team-metainfo#115
Change-Id: I96e4e7a563b188df478f8489027dc0042469b839
With pointerdb listing objects operation was optimized to skip
objects from prefixes for non recursive listing. This change it
adopting this optimiaztion from old code.
Main change is to drop current page results if we detect a prefix
that needs to be skipped and jump with next listing query after this
prefix by setting cursor to "some-prefix(byte('/')+1) which is
effectively "some-prefix0".
Benchmark:
name old time/op new time/op delta
NonRecursiveListing/Postgres/listing_no_prefix-8 960µs ±11% 257µs ±12% -73.19% (p=0.008 n=5+5)
NonRecursiveListing/Postgres/listing_with_prefix-8 945µs ±11% 671µs ±12% -28.97% (p=0.008 n=5+5)
NonRecursiveListing/Cockroach/listing_no_prefix-8 4.31ms ± 8% 1.19ms ± 7% -72.44% (p=0.008 n=5+5)
NonRecursiveListing/Cockroach/listing_with_prefix-8 4.97ms ± 8% 3.35ms ±15% -32.67% (p=0.008 n=5+5)
Fixes https://github.com/storj/team-metainfo/issues/115
Change-Id: Iafdf3600d058abbaf441f792d32a7fc17cc08696
We are not using this method and most probably we
won't need to list objects with all statuses at once.
Removing for now.
Change-Id: I7aa0468c5f635ee2fb1fe51db382595c6343dd9c
We implemented filtering of system metadata to
reduce DB load in case user will need only list of
objects but we missed that encryption configuration
is needed to decrypt object key.
This change is always including encryption configuration into
list objects results.
Change-Id: Iaf7b3d8441480e3ad787f19a28f1b648584d5f7d
To reduce database load, add option to omit as many object properties
as possible when listing objects.
Change-Id: I817633801b00629a4042d1d1bd2389ee581953de
It turns out that some DB methods are not
passing context to to lower levels even if have
context as a parameter.
Change-Id: I82f4fc1a47c362687a91364d85e4468057e53134
Initially we duplicated the code to avoid large scale changes to
the packages. Now we are past metainfo refactor we can remove the
duplication.
Change-Id: I9d0b2756cc6e2a2f4d576afa408a15273a7e1cef
metabase has become a central concept and it's more suitable for it to
be directly nested under satellite rather than being part of metainfo.
metainfo is going to be the "endpoint" logic for handling requests.
Change-Id: I53770d6761ac1e9a1283b5aa68f471b21e784198
