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spring-boot-demo/excel-export/output/07-million-rows.txt
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# 1,000,000 rows: SXSSF and CSV under a 64 MB heap, XSSF given a large heap
# openjdk version "25.0.5" 2026-10-20 LTS | 2 vCPU | 8027 MB RAM
# indicative numbers from a shared sandbox, one run per line; see README
SXSSF /export/sxssf?rows=1000000 Xmx=64m http=200 curl=0 bytes=59408766 37.5s | peak used heap 56 MB | max after GC 20 MB | 163 GC pauses, longest 43 ms | peak RSS 208 MB | temp dir peak 475 MB, files left 0 | OOM=no
CSV /export/csv?rows=1000000 Xmx=64m http=200 curl=0 bytes=104476584 4.3s | peak used heap 52 MB | max after GC 15 MB | 82 GC pauses, longest 40 ms | peak RSS 175 MB | temp dir peak 0 MB, files left 0 | OOM=no
XSSF /export/xssf?rows=1000000 Xmx=3g http=500 curl=0 bytes=107 273.6s | peak used heap - MB | max after GC 3072 MB | 132 GC pauses, longest 12794 ms | peak RSS 3295 MB | temp dir peak 0 MB, files left 0 | OOM=YES | body: {"timestamp":"2026-10-29T06:11:02.454Z","status":500,"error":"Internal Server Error","path":"/export/xssf"}