Lipeng Zhu

Enable AutoFDO for Nebula Graph

4

**Introduction** Hi Nebula Graph dev team, We are working on the performance evaluation of Nebula Graph in Intel's ICX server, and found the metrics of front-end bound is high(LIB), for...

## What type of PR is this? - [ ] bug - [ ] feature - [ ] enhancement ## What problem(s) does this PR solve? #### Issue(s) number: ####...

Use io_uring to batch handle clients pending writes to reduce SYSCALL count.

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### Description This patch try to benefit the [io_uring batching feature](https://github.com/axboe/liburing/wiki/io_uring-and-networking-in-2023#batching) to reduce the SYSCALL count for Redis when handleClientsWithPendingWrites. With this patch, we can observe more than 4% perf...

Adjust io-threads number in runtime to fully utilize multi I/O threads

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## Description This patch try to fix the issue when large io-threads number is configured, io-threads will be stopped according below logic, this will cause the io-threads useless and longer...

In https://github.com/redis/redis/issues/12912, we compared the performance and quality with existing MurmurHash. This PR try to provide an option `make HLL_HASH=wyhash` to user from scratch if faster and better quality are...

Add build option for faster and better quality hash function (wyhash) in hyperloglog.

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**The problem/use-case that the feature addresses** I found the hash function MurmurHash64A is the most hotspot when running benchmark for `pfadd` command. The benchmark I used is https://github.com/redis/redis-benchmarks-specification/blob/main/redis_benchmarks_specification/test-suites/memtier_benchmark-1key-pfadd-4KB-values-pipeline-10.yml According to...

Rename output from redis-* to valkey-* for binaries of "--help" "--version"

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Rename output from redis-* to valkey-* for binaries: 1. `valkey-benchmark` 2. `valkey-cli` 3. `valkey-server` 4. `valkey-sentinel` 5. `valkey-check-rdb` 6. `valkey-check-aof` "--help" "--version" option.

Use io_uring to batch handle clients pending writes to reduce SYSCALL count.

31

### Description This patch try to benefit the [io_uring batching feature](https://github.com/axboe/liburing/wiki/io_uring-and-networking-in-2023#batching) to reduce the SYSCALL count for valkey when `handleClientsWithPendingWrites`. With this patch, we can observe more than _**6%**_ perf...

Adjust io-threads number in runtime to fully utilize multi threads and make CPU more efficient.

9

## Description This patch try to fix the issue when io-threads number is configured, io-threads will be stopped according below logic, this will cause the io-threads useless and longer latency....