mayuropensource commented on pull request #7022:
URL: https://github.com/apache/arrow/pull/7022#issuecomment-619456016
A better calculation for bandwidth (by removing TTFB from total time) is
done using following script:
curl --negotiate -u: -o /dev/null -w "total_time_sec=%{time_total}
data_size_bytes=%{size_download} TTFB_sec=%{time_starttransfer}\n" $S3_DATA_URI
| awk -F' ' '{ split($1, tt, "="); split($2, ds, "="); split($3, ttfb, "=");
bw=ds[2] / (1024 * 1024. * (tt[2] - ttfb[2])); print("TTFB_millis =", ttfb[2] *
1000.); print("Bandwidth_MiB_per_sec =", bw); }'
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