Optimizing SLO Performance at Scale: How We Solved Pyrra’s Query Performance on Thanos
Learn how we optimized Pyrra’s SLO monitoring to handle high-cardinality metrics at scale, reducing cross-zone traffic and query times while maintaining 99% accuracy.
December 30, 2025
Performance
Observability
SLOs
Prometheus
Thanos
The MCP for performance engineering
Introducing Remote MCP Support in Polar Signals Cloud
July 17, 2025
Performance Analysis
Performance
Observability
GPU
turbopuffer: Consistently High Performance at Scale
Case Study: How turbopuffer leverages Polar Signals for Continuous Profiling
March 26, 2025
Case Study
Continuous-Profiling
Performance
Rust
Unlocking Efficient Memory Profiling and Faster Debugging
"High tail latency for one of our customers, was diagnosed immediately by seeing a large On-CPU time span"
February 18, 2025
Case Study
Continuous-Profiling
Performance
Memory Profiling
Rust
Doubling Throughput with Continuous Profiling and Optimization
“68.37% of CPU [...] with a one-line code change [...] went down to 31.82%”
February 11, 2025
Case Study
Continuous-Profiling
Performance
Rust
AWS
A Walk with LuaJIT
How we scrape callstack information from the LuaJIT engine for profiling
November 13, 2024
eBPF
Interpreter
Performance
LuaJIT
Continuous-Profiling
JIT
The Cost of Go's Interfaces and How to Fix It
Why dynamic dispatch is necessary and how to fix it with devirtualizing and PGO.
January 1, 2026
go
golang
pgo
observability
continuous profiling
ebpf
performance
Polar Signals Cloud is Generally Available
We're ready to share our product with the world!
January 1, 2026
ga
generally available
observability
continuous profiling
ebpf
performance
Profiling Python and Ruby using eBPF
Dive into the internals of profiling interpreted Python and Ruby code using eBPF
January 1, 2026
ebpf
interpreter
ruby
python
continuous profiling
profiling
performance
performance profiling
performance analysis
Ice and Fire: How to read icicle and flame graphs
Flame graphs and icicle graphs are a great way to visualize performance profiles. In this post, we will learn how to read and interpret them.
January 1, 2026
continuous profiling
profiling
icicle graphs
flame graphs
performance
performance monitoring
performance profiling
performance analysis
data visualization
Designing Your Indexes for Better Database Performance
How we improved our database query performance by 80% and the intuition behind the changes that led to this improvement