The story how query optimization can influence the overall database performance.
Category Archives: Case study
Performance crime: concurrent collections misuse
The case study on how the harmless collection could silently cause system to work slower and remain undetected for ages.
Performance crime: config to kill performance
Would you as a developer allow a setting that can make system 15 550 times slower? I’ve received a few memory dumps with high CPU; each scavenges AccessResultCache: How big is the cache so that every snapshot contains the operation? Detecting cache size from the snapshot A ClrMD code snippet locates objects in Sitecore.Caching.Generics.Cache namespaceContinue reading “Performance crime: config to kill performance”
Performance crime: no respect for mainstream flow
How expensive a lack of respect to mainstream usage could be?
Performance crime: careless allocations
I was investigating Sitecore Aggregation case a time back and my attention was caught by GC Heap Allocation mentioning RequiresValidator in top 10: Combining all generic entries together leads to over 7% of total allocations making it second most expensive type application wide! Yes, all it does is check object is not null Yes, itContinue reading “Performance crime: careless allocations”
How much faster can it be?
Performance Engineering of Software Systems MIT course begins with optimizing math task code to make it work 53K times faster.
How faster can real-life software become without changing the technology?
Why are reports outdated?
The story how aggregation performance was investigated.
Tackling memory leak
The real world case study on finding memory leak.