Comments (2)
Thanks a lot for your comment!
It is fair to say though that having a generalized memtier run on a bunch of different commands might lead to some generalized performance improvements so I will definitely give it a try.
Even if it doesn't bring a "generalized" improvement, it can bring a higher improvement on one specific workload. It's still a good result for some users. E.g. in this case they could estimate that for some specific workload, Cachegrand could be optimized further with PGO. Even if in this case you cannot provide an optimized binary to your users - they would be able to do PGO optimization on their own workload, based on PGO notes from Cachegrand documentation.
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Hi @zamazan4ik,
Yes, PGO is a very interesting topic, in cachegrand we do a fair amount of manual optimizations unrolling loops and using ad-hoc attributes to optimize the branching of the hot path but of course it can really help a lot to do it.
The issue though is that cachegrand codebase tries to minimize the branching in the hotpath, favouring small hashtables, and most of the time is spent during I/O on the kernel side.
It is fair to say though that having a generalized memtier run on a bunch of different commands might lead to some generalized performance improvements so I will definitely give it a try.
Thanks for bringing it up!
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Related Issues (20)
- Implement redis sorted sets commands
- Implement types support in the storage db
- Implement keyspace related commands
- Distributed transactions - clarification needed HOT 11
- Update the hashtable documentation
- Implement redis-compatible (RDB) snapshotting support
- Investigate liblzf segfaults HOT 2
- Implement the SAVE and BGSAVE Redis commands HOT 1
- The SHUTDOWN command needs to be updated to support the SAVE parameter HOT 1
- The shutdown logic needs to be updated to trigger a dump at the shutdown unless the SHUTDOWN NOSAVE command has been issued
- Tests for the high level snapshotting process (implemented in storage_db_snapshot.c mostly)
- Implement a buffering mechanism for the storage backend as implemented for the network backend.
- Fix code scanning alert - Missing return statement
- Prometheus endpoint Segfaults HOT 2
- Add support for io_uring queues cancellation HOT 1
- Implement cluster mode
- Implement multiple database instances support
- Implement the SELECT command
- Implement transactions related commands
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