MartkosIT (Mark Lilley) 🇬🇧

Hi I'm Mark. I help companies, test managers and testers de-risk their product performance through a package of performance analysis & testing.

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

I manipulate threads to load up your system, stress it out, soak up the memory, trying to leave a lasting footprint.

Then become a psychiatrist, analysing, telling you how you measured up and how you could do better.

📩[email protected]

#LetsTalk
#PerformanceTesting

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

18 rules are free forever.

Pro & Team tiers unlock 35+ more rules (total ~53), 30-day scan history, and a dashboard to track quality trends across your entire test suite over time.

CLI, API, or plug it right into CI via the GitHub Action.

Try it → https://t.co/K8uMT9xMMr

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

When scripting it's easy to skip the basics: no think times 😴, hardcoded creds 🔑, zero assertions 🚫, weird ramp-ups 📈.

These silent killers make your results meaningless.
So I built perf-lint — a static analyzer that catches them before you even run the test.

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Flags + fix:

Missing think times → unrealistic behavior
Hardcoded values → won't scale in CI/CD
No assertions → test "never fails"
Bad ramp patterns → skewed results

Script gets an A–F quality score 📊, violation explanations, fix suggestions, and 12 auto-fixable issues.

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Launch pricing — first 50 buyers only:

£29 Basic (normally £59)
£59 Pro (normally £99)

One-time payment. No subscription. Perpetual license.

Once 50 are gone at each tier, full price kicks in.

https://t.co/XgPyMN1an1

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Spent 3 hours correlating a single OAuth login flow in JMeter.

30 requests. Easy.

1st replay: hardcoded auth code. 2nd: missed CSRF token. 3rd: a base64 session ID that didn't even look dynamic. 11 extractors later, finally worked.

So I built a tool to never do that again. 🧵

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Perf AutoCorrelator Pro:

→ Feed it a HAR file
→ Finds dynamic values automatically
→ Outputs a runnable script - JMeter. Extractors for Gatling or k6

Handles the awkward stuff too — JWTs, base64, GraphQL cursors, OAuth + PKCE, Salesforce tokens.

50+ patterns. 100% offline

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Free tier to get started, pay when you need more.
🔗https://t.co/or4uNm8QJ2

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Built a test data generator that actually scales.

→ Pre-built datasets · CSV, JSONL, Parquet
→ Up to 10M rows · Multiple locales
→ Custom data generation when templates aren't enough👇

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Grab it here: https://t.co/3JmAfG9bxk

Free to use with optional Pro upgrades for power users.

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Built a Performance Test Reporting Dashboard 📊
Works with JMeter · k6 · Gatling

Drop your results file → instant insights: response times, throughput, error rates, APDEX score, SLA compliance, anomaly detection, and file comparison.

1 dashboard, 3 tools. Free to download 👇

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Quickly see your JMeter JMX structure directly on the CLI. Quick modification or confirmation of values. Batch edit multiple JMX files....just make your CLI/TUI experience with JMeter so much more enjoyable and efficient.

https://t.co/7qUdOOnbqJ

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Make rapid adjustments to your JMX files without waiting for the JMeter GUI to load. Ideal for CI/CD pipelines and scripted workflows.

Quick modifications to thread counts, duration, or endpoints in a TUI.

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Full lineup + pricing:

• JMeter CLI Editor → £29 (launch sale)
• Perf AutoCorrelator Pro → £29 (launch sale)
• Reporting Dashboard → Free (upgrades in-app)
• Perf Lab Training Bundle → £99
• DummyDataGenPro → Free tier (paid £15/mo+)

Store: https://t.co/nl2V7s2hme

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

After years in perf testing trenches, I hit my 2026 goal: launched my own tools suite! 🚀

Tired of JMX GUI crashes, manual correlations, fake data pain?

Introducing:
• JMeter CLI Editor
• Perf AutoCorrelator Pro
• Reporting Dashboard
• Perf Lab Training
• Dummydatagenpro

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

@chintan_910 Yes, k6 fully supports .NET Core + Vue.js + PostgreSQL apps: strong HTTP/2 for APIs, k6/browser for Vue, optional DB extensions.

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

🚀 k6 vs JMeter in 2026: Still a big debate for DevOps/QA!

2025-26 benchmarks key points:
• k6 efficiency beast: Go goroutines ~2KB per VU vs JMeter Java ~1MB/thread.
• 10k+ VUs smooth on single machine; 50-70% fewer resources → perfect for CI/CD pipelines.

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

2026 reality: Lots of teams hybridize (k6 for HTTP + JMeter for exotic/legacy).

Bottom line: Run a quick PoC on your stack!

Most agile/cloud crews leaning k6 for pipeline wins. JMeter rock-solid for enterprise breadth.

You team: k6 gang or JMeter loyalists? 👇
#k6 #JMeter

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

• Scripting DX: k6 uses clean JS/TS → Git-native, easy PRs & dynamic logic.
JMeter's XML? Total review nightmare.

Wins:
k6 → modern APIs, microservices, cloud-native, agile/shift-left teams.
JMeter → broad protocols (SOAP, JDBC, legacy), GUI for non-coders.

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

This shell script can take a jtl file and split it into new jtl files containing only the period of time where the peak throughput executed. It will then create individual Jmeter HTML reports for each.

https://t.co/aonfEBiKYO

[MartkosIT (Mark Lilley) 🇬🇧 @MartkosIT]

Pika - a python library that communicated via AMQP with messaging systems such as RabbitMQ.

A short example of consuming messages from an ERROR_QUEUE and writing them to a gzip file.

https://t.co/LxJcrTKULf