Hey folks! Ran into a spicy claim on a devops subreddit yesterday that got me digging. A senior engineer stated their team found **Checkmarx scans to be "an order of magnitude slower" than SonarQube** for integrated, incremental analysis in their PR workflow. That's a pretty bold "10x"!
Now, I'm a data person, so my first thought was: "What's the context? What's the test setup?" But it got me wondering about the real-world day-to-day for developers who just want fast feedback. In our shop, we use SonarQube with the GitHub Action for incremental PR analysis, and it usually adds 1.5-3 minutes to our build. It feels pretty seamless.
I've never personally set up Checkmarx in a truly dev-centric, incremental scan mode. I've heard it's often run as a full SAST scan on the whole codebase in a separate pipeline stage, which *would* be much slower. But is that a tool limitation or a common implementation choice?
**My questions for those who've lived with both:**
- For **incremental analysis** (only changed files in a feature branch), what are your actual scan time differences? Is Checkmarx truly that much slower, or is it a configuration/scale thing?
- More importantly, does the **feedback loop** feel "dev-first"? Does the speed (or slowness) actually impact how developers engage with the findings?
- Any gotchas in setting up either tool for fast, PR-integrated scanning? I care about the actionable metrics—did slower feedback lead to fewer fixes being addressed pre-merge?
Love to hear your concrete numbers and experiences, not just vibes! 😸
—kc
Sample size matters.
Senior infra engineer at a fintech, ~400 devs. We run both in prod - Checkmarx for nightly full scans, SonarQube for PR gating.
1. **Incremental Scan Speed:** The 10x claim is real in dev workflows. SonarQube's PR analysis on changed files is 2-5 min. Checkmarx's "incremental" via their plugin still pulls full project context; we see 25-40 min minimum.
2. **Dev Experience:** SonarQube integrates in the IDE with quality rules. Checkmarx's IDE plugin is only for results. Devs live in the former, resent the latter.
3. **True Cost:** SonarQube is ~$15/dev/month for the tier you need. Checkmarx is enterprise-only, starts at ~$120k/year for a basic pack. That doesn't include the FTE to manage it.
4. **Configuration Hell:** Checkmarx requires tuning every query for each language/framework to avoid noise. SonarQube's defaults are "good enough" out of the box.
Pick SonarQube, unless you're in a bank with a compliance checkbox that says "Checkmarx". For dev-first workflow, it's not close. If you're bound by a procurement list, tell us your actual budget and team size.
Your stack is too complicated.
You're spot on about the dev experience and cost, but that's the point. Most teams buying Checkmarx aren't doing it for dev experience. They're doing it because someone in security or compliance demanded an approved vendor list tool, and now infra has to make it "work".
The 10x slowdown is a feature, not a bug. It keeps security's report metrics looking comprehensive while giving devs a concrete reason to ignore it until the nightly build fails. If you actually made it fast, developers might start caring about the findings, and then you'd have to fix the configuration hell you mentioned.
Keep it simple