The essential points from this guide -- each one is explained in detail below.
Measure connection time, TTFB, and total download time for accurate speed assessment.
Compare proxy requests against direct connections to isolate the proxy overhead.
Residential proxies typically add 50-200ms latency; datacenter proxies under 10ms.
Test from the same geographic region as your production deployment for realistic results.
Proxy speed has three components: connection time (how long to establish the proxy connection), time-to-first-byte (how long until the first byte of the response arrives), and total download time (how long to receive the complete response). The proxy adds overhead to the first two; the third depends on the proxy's bandwidth and the target's response size.
Use curl's built-in timing to measure each phase:
curl -w "connect: %{time_connect}s\nttfb: %{time_starttransfer}s\ntotal: %{time_total}s\n" \
-x http://USER:PASS@gw.knoxproxy.com:7000 \
-o /dev/null -s https://httpbin.org/getRun this 10-20 times and average the results to account for variance. Compare against the same curl command without the -x proxy flag to isolate the proxy overhead.
Build a simple benchmark script that measures request timing across multiple proxy endpoints:
import requests
import time
proxy = "http://USER:PASS@gw.knoxproxy.com:7000"
results = []
for _ in range(20):
start = time.monotonic()
r = requests.get("https://httpbin.org/get",
proxies={"https": proxy})
elapsed = time.monotonic() - start
results.append(elapsed)
print(f"Median: {sorted(results)[10]:.3f}s")
print(f"p95: {sorted(results)[18]:.3f}s")Ready to put this into practice? Test your proxy speed
KnoxProxy Research Team · Technical Content
Network engineers and proxy infrastructure specialists with 10+ years in anti-bot systems, web scraping, and IP routing.
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