Performance optimisations
2 likes344 views
§±§â§Ö§Ù§Ö§ß§ä§Ñ§è§Ú§ñ §ã §ã§Ö§Þ§Ú§ß§Ñ§â§Ñ §ã§Ö§â§Ó§Ú§ã§ß§à§Ô§à §è§Ö§ß§ä§â§Ñ §¥§Ø§Ö§ä §Ó 2012 §Ô§à§Õ§å
More Related Content
What's hot (11)
Viewers also liked (20)
![[21] Aug 2009 [E Rep] Ongov.Pblo Fall 2009](https://cdn.slidesharecdn.com/ss_thumbnails/21aug2009erepongov-pblofall2009-090821062441-phpapp02-thumbnail.jpg?width=560&fit=bounds)
Similar to Performance optimisations (20)
Performance optimisations
- 1. §¡§ß§Ñ§Ý§Ú§Ù §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§Ú §¬§â§Ñ§ä§Ü§Ú§Û §á§å§ä§Ö§Ó§à§Õ§Ú§ä§Ö§Ý§î §¡§ß§ä§à§ß §±§Ñ§Ó§Ý§Ö§ß§Ü§à §²§å§Ü§à§Ó§à§Õ§Ú§ä§Ö§Ý§î §ï§Ü§ã§á§Ö§â§ä§ß§à§Û §Ô§â§å§á§á§í 20 §³§Ö§ß§ä§ñ§Ò§â§î, 2012
- 2. §£§í §Ù§ß§Ñ§Ö§ä§Ö §à§ä§Ó§Ö§ä§í §ß§Ñ §ï§ä§Ú §Ó§à§á§â§à§ã§í? §³§Ü§à§Ý§î§Ü§à §á§à§Ý§î§Ù§à§Ó§Ñ§ä§Ö§Ý§Ö§Û §å §Ó§Ñ§ê§Ö§Û §ã§Ú§ã§ä§Ö§Þ§í? §³§Ü§à§Ý§î§Ü§à §Ú§Ù §ß§Ú§ç §Ù§Ñ§ç§à§Õ§ñ§ä §à§Õ§ß§à§Ó§â§Ö§Þ§Ö§ß§ß§à? §¬§Ñ§Ü§à§Û §Ù§Ñ§á§Ñ§ã §á§à §á§â§à§é§ß§à§ã§ä§Ú? §£§í §Ù§ß§Ñ§Ö§ä§Ö §Ü§à§Ô§Õ§Ñ §à§ß §Ù§Ñ§Ü§à§ß§é§Ú§ä§ã§ñ? §¬§Ñ§Ü§à§Ö §Ó§â§Ö§Þ§ñ §à§ä§Ü§Ý§Ú§Ü§Ñ §å§ã§ä§â§Ñ§Ú§Ó§Ñ§Ö§ä §Ó§Ñ§ê§Ú§ç §Ü§Ý§Ú§Ö§ß§ä§à§Ó? §£§í §Þ§à§ß§Ú§ä§à§â§Ú§ä§Ö §á§â§Ö§Ó§í§ê§Ö§ß§Ú§Ö §Ó§â§Ö§Þ§Ö§ß§Ú §à§ä§Ü§Ý§Ú§Ü§Ñ? ¡....... §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 3. §° §é§Ö§Þ §ç§à§é§å §â§Ñ§ã§ã§Ü§Ñ§Ù§Ñ§ä§î §¡§ß§Ñ§Ý§Ú§Ù §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§Ú : ? §á§à§Ó§í§ê§Ñ§Ö§ä §á§â§Ö§Õ§ã§Ü§Ñ§Ù§å§Ö§Þ§à§ã§ä§î §â§Ñ§Ò§à§ä§í §ã§Ú§ã§ä§Ö§Þ§í ? §á§à§Ù§Ó§à§Ý§ñ§Ö§ä §à§è§Ö§ß§Ú§ä§î §Ù§Ñ§á§Ñ§ã §á§â§à§é§ß§à§ã§ä§Ú ? §á§à§Þ§à§Ô§Ñ§Ö§ä §á§Ý§Ñ§ß§Ú§â§à§Ó§Ñ§ä§î §æ§Ú§ß§Ñ§ß§ã§í ? §á§à§Ù§Ó§à§Ý§ñ§Ö§ä §Ó§í§ñ§Ó§Ú§ä§î §å§Ù§Ü§Ú§Ö §Þ§Ö§ã§ä§Ñ §ª §ã§Ñ§Þ§à§Ö §Ô§Ý§Ñ§Ó§ß§à§Ö: §£§í§ñ§Ó§Ú§Ó §Ú §å§ã§ä§â§Ñ§ß§Ú§Ó §å§Ù§Ü§à§Ö §Þ§Ö§ã§ä§à §Þ§à§Ø§ß§à §ã§å§ë§Ö§ã§ä§Ó§Ö§ß§ß§à §ã§ï§Ü§à§ß§à§Þ§Ú§ä§î §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 4. Bottleneck §Ú §Ó§ã§Ö §Ó§ã§Ö §Ó§ã§Ö §µ§Ù§Ü§à§Ö §Þ§Ö§ã§ä§à ¡ª §ñ§Ó§Ý§Ö§ß§Ú§Ö, §á§â§Ú §Ü§à§ä§à§â§à§Þ §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§î §Ú§Ý§Ú §á§â§à§á§å§ã§Ü§ß§Ñ§ñ §ã§á§à§ã§à§Ò§ß§à§ã§ä§î §ã§Ú§ã§ä§Ö§Þ§í §à§Ô§â§Ñ§ß§Ú§é§Ö§ß§Ñ §à§Õ§ß§Ú§Þ §Ú§Ý§Ú §ß§Ö§ã§Ü§à§Ý§î§Ü§Ú§Þ§Ú §Ü§à§Þ§á§à§ß§Ö§ß§ä§Ñ§Þ§Ú §Ú§Ý§Ú §â§Ö§ã§å§â§ã§Ñ§Þ§Ú. (§ã) WikiPedia §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 5. §£§â§Ö§Þ§ñ §à§ä§Ü§Ý§Ú§Ü§Ñ §ã§Ú§ã§ä§Ö§Þ§í §ä§Ú§á§Ú§é§í§Û §Ô§â§Ñ§æ§Ú§Ü §Ù§Ñ§Ó§Ú§ã§Ú§Þ§à§ã§ä§Ú §Ó§â§Ö§Þ§Ö§ß§Ú §à§ä§Ü§Ý§Ú§Ü§Ñ §à§ä §ß§Ñ§Ô§â§å§Ù§Ü§Ú. §¤§â§Ñ§æ§Ú§Ü §Ù§Ñ§Ó§Ú§ã§Ú§Þ§à§ã§ä§Ú §ç§à§â§à§ê§à §ã§á§â§à§Ö§Ü§ä§Ú§â§à§Ó§Ñ§ß§ß§à§Û §ã§Ú§ã§ä§Ö§Þ§í §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 6. §±§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§î §ã§Ú§ã§ä§Ö§Þ§í §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 7. §µ §â§Ñ§Ù§ß§í§ç §á§â§Ú§Ý§à§Ø§Ö§ß§Ú§Û §â§Ñ§Ù§ß§í§Ö §ä§â§Ö§Ò§à§Ó§Ñ§ß§Ú§ñ §±§â§Ú§Ý§à§Ø§Ö§ß§Ú§ñ §Ò§í§Ó§Ñ§ð§ä : - CPU bound - IO bound ( Network, Disk ) §±§â§Ú §ï§ä§à§Þ §Ü§Ý§ð§é§Ö§Ó§í§Þ §æ§Ñ§Ü§ä§à§â§à§Þ §Þ§à§Ø§Ö§ä §Ò§í§ä§î : - latency - throughput §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 8. §´§Ö§á§Ö§â§î §à CPU §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 9. §¹§ä§à §Ó§Ñ§Ø§ß§à §Ù§ß§Ñ§ä§î §á§â§à CPU §´§Ñ§Ü §Ý§Ú §Ó§Ñ§Ø§ß§Ñ §é§Ñ§ã§ä§à§ä§Ñ CPU? §£§à§Ù§Þ§à§Ø§ß§à§ã§ä§Ú §Þ§Ñ§ã§ê§ä§Ñ§Ò§Ú§â§à§Ó§Ñ§ß§Ú§ñ §Ù§ß§Ñ§é§Ú§ä§Ö§Ý§î§ß§à §à§ä§Ý§Ú§é§Ñ§ð§ä§ã§ñ ( §Ü§Ñ§Ü §Ú latency §á§â§Ú §à§Ò§â§Ñ§ë§Ö§ß§Ú§Ú §Ü ?§é§å§Ø§à§Û? §á§Ñ§Þ§ñ§ä§Ú ) §±§â§à§è§Ö§ã§ã§à§â §ï§ä§à §ß§Ö §ä§à§Ý§î§Ü§à CPU §ß§à §Ú §Ú§ß§ä§Ö§Ô§â§Ú§â§à§Ó§Ñ§ß§ß§í§Ö §ï§Ý§Ö§Þ§Ö§ß§ä§í ( §ã§Ö§ä§î, §Ú§ß§ä§Ö§â§æ§Ö§Û§ã §Ü §á§Ñ§Þ§ñ§ä§Ú, §Þ§à§Õ§å§Ý§î §ê§Ú§æ§â§à§Ó§Ñ§ß§Ú§ñ ) §¬§Ñ§Ø§Õ§í§Û §á§â§à§è§Ö§ã§ã§à§â §à§Ò§Ý§Ñ§Õ§Ñ§Ö§ä §å§ß§Ú§Ü§Ñ§Ý§î§ß§í§Þ§Ú §ã§Ó§à§Û§ã§ä§Ó§Ñ§Þ§Ú, §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ß§Ú§Ö §Ü§à§ä§à§â§í§ç §á§à§Ù§Ó§à§Ý§ñ§Ö§ä §á§à§Ó§í§ã§Ú§ä§î §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§î §á§â§Ú§Ý§à§Ø§Ö§ß§Ú§ñ ( SSE 4.2, prefetch §Ú§ß§ã§ä§â§å§Ü§è§Ú§Ú, out-of-order execution, branch prediction, ¡ ) §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 10. SMP §Ú NUMA §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 11. §¥§Ñ§Ó§Ñ§Û§ä§Ö §á§à§Ô§à§Ó§à§â§Ú§Þ §á§â§à RAM §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 12. §è§Ö§á§à§é§Ü§Ñ §à§Ò§â§Ñ§ë§Ö§ß§Ú§Û §Ü §á§Ñ§Þ§ñ§ä§Ú Regs L1 Processor Unified d-cache Unified L2 L2 Memory Memory disk disk L1 Cache Cache i-cache size: 200 B 8-64 KB 1-4MB SRAM 128 MB DRAM 30 GB speed: 3 ns 3 ns 6 ns 60-70 ns 8-10 ms line size: 8B 32 B 32 B 8 KB §¢§í§ã§ä§â§Ö§Ö, §Ó§í§ê§Ö, §ã§Ú§Ý§î§ß§Ö§Ö §¢§à§Ý§î§ê§Ö, §Þ§Ö§Õ§Ý§Ö§ß§Ö§Ö, §Õ§Ö§ê§Ö§Ó§Ý§Ö §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 13. §¹§ä§à §ß§å§Ø§ß§à §Ù§ß§Ñ§ä§î §á§â§à RAM ? §¬§Ñ§Ü §ã§à§à§ä§ß§à§ã§ñ§ä§ã§ñ §Ó§â§Ö§Þ§Ö§ß§Ñ §Õ§à§ã§ä§å§á§Ñ ? §±§Ñ§Þ§ñ§ä§î §â§Ñ§Ò§à§ä§Ñ§Ö§ä §ß§Ö §Ò§Ñ§Û§ä§Ñ§Þ§Ú ? §³§å§ë§Ö§ã§ä§Ó§å§Ö§ä L1/L2 §Ü§Ö§ê ? §¬§Ö§ê §Ó§í§Þ§í§Ó§Ñ§Ö§ä§ã§ñ ? §°§Ò§â§Ñ§ë§Ö§ß§Ú§ñ §Ü §á§Ñ§Þ§ñ§ä§Ú §ã§ä§à§Ú§ä §Ó§í§â§Ñ§Ó§ß§Ú§Ó§Ñ§ä§î ? §³§å§ë§Ö§ã§ä§Ó§å§Ö§ä ( §Ú §Õ§Ñ§Ø§Ö §Ú§ß§à§Ô§Õ§Ñ §â§Ñ§Ò§à§ä§Ñ§Ö§ä ) §á§â§Ö§æ§Ö§ä§é §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 14. §£§â§Ö§Þ§ñ §Õ§à§ã§ä§å§á§Ñ §Ü RAM Bandwidth. §Ý§Ú§ß§Ö§Û§ß§à§Ö §é§ä§Ö§ß§Ú§Ö 4.6 GB/sec §ß§Ñ §Ý§Ñ§á§ä§à§á§Ö, ~12.7 GB/sec §ß§Ñ §ã§Ö§â§Ó§Ö§â§Ö * §¯§Ñ §ã§Ö§â§Ó§Ö§â§Ñ§ç §Þ§à§Ø§ß§à §ß§Ñ§ã§ä§â§Ñ§Ú§Ó§Ñ§ä§î interleaving, §Ü§à§ä§à§â§í§Û §á§à§Ó§í§ê§Ñ§Ö§ä §ã§Ü§à§â§à§ã§ä§î §Ý§Ú§ß§Ö§Û§ß§à§Ô§à §é§ä§Ö§ß§Ú§ñ Latency. §¹§Ú§ä§Ñ§Ö§Þ 100M §Ò§Ý§à§Ü§à§Þ int32, §ê§Ñ§Ô 4096 195 MB/sec, 2.14 sec/100M, ~49 Mreads/sec §á§à§ã§Ý§Ö§Õ§à§Ó§Ñ§ä§Ö§Ý§î§ß§í§Û §Õ§à§ã§ä§å§á ~1-2 §ä§Ñ§Ü§ä§Ñ §ã§Ý§å§é§Ñ§Û§ß§í§Û §Õ§à§ã§ä§å§á ~40-60 §ä§Ñ§Ü§ä§à§Ó §±§à§é§Ö§Þ§å §ä§Ñ§Ü? §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 15. RAM §Ú L1 cache §±§à§ä§à§Þ§å §é§ä§à §ã§å§ë§Ö§ã§ä§Ó§å§Ö§ä L1/L2 cache §³§Ü§Ñ§é§Ö§Þ §ã §ê§Ñ§Ô§à§Þ N => §Ü§Ö§ê-§Þ§Ú§ã§ã§í => §ä§à§â§Þ§à§Ù§Ñ §º§Ñ§Ô 4..64, ~4400..330 MB/sec, ~2x/§ê§Ñ§Ô §º§Ñ§Ô 64..1024, ~330..195 MB/sec P.S: §Õ§Ý§ñ CPU §ã §â§Ñ§Ù§Þ§Ö§â§à§Þ L1 §Ü§Ö§ê-§Ý§Ú§ß§Ú§Ú 64 §Ò§Ñ§Û§ä§Ñ §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 16. RAM §Ú L2 cache §¶§Ú§Ü§ã§Ú§â§å§Ö§Þ §ê§Ñ§Ô 1024, §å§Þ§Ö§ß§î§ê§Ñ§Ö§Þ §Õ§Ñ§ß§ß§í§Ö 100M, ¡, 4M, 3M, 2.3M == 195 MB/sec 2M == 648 MB/sec 1M == 1688 MB/sec 512K == 1724 MB/sec §£§ã§Ö §ã§ç§à§Õ§Ú§ä§ã§ñ, §â§Ñ§Ù§Þ§Ö§â L2 cache 2MB §±§â§Ú §é§×§Þ §ä§å§ä §Ó§í§â§Ñ§Ó§ß§Ú§Ó§Ñ§ß§Ú§Ö? §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 17. RAM §Ú L3 cache §¯§å §Ó§í §á§à§ß§ñ§Ý§Ú §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 18. §±§Ñ§â§Ñ§Þ§Ö§ä§â§í cpu cache §¬§à§ï§æ§Ú§è§Ú§Ö§ß§ä §á§â§à§Þ§Ñ§ç§Ñ ? §¥§à§Ý§ñ §à§Ò§â§Ñ§ë§Ö§ß§Ú§Û §Ü §á§Ñ§Þ§ñ§ä§Ú, §ß§Ö §ß§Ñ§Û§Õ§Ö§ß§ß§í§ç §Ó §Ü§Ö§ê§Ö (misses/references) ? §³§â§Ö§Õ§ß§Ú§Ö §é§Ñ§ã§Ý§Ñ: ?3-10% §Õ§Ý§ñ L1 ?§®§à§Ø§Ö§ä §Ò§í§ä§î §à§é§Ö§ß§î §Þ§Ñ§Ý§Ö§ß§î§Ü§Ú§Þ ( < 1%) §Õ§Ý§ñ L2, §Ù§Ñ§Ó§Ú§ã§Ú§ä §à§ä §â§Ñ§Ù§Þ§Ö§â§Ñ, §Ú §ä.§Õ.. Hit Time ? §£§â§Ö§Þ§ñ ¡°§Õ§à§ã§ä§Ñ§Ó§Ü§Ú¡± §Ý§Ú§ß§Ú§Ú §Ü§Ö§ê§Ñ §Ó ¡°§á§â§à§è§Ö§ã§ã§à§â¡± (§Ó§Ü§Ý§ð§é§Ñ§Ö§ä §Ó§â§Ö§Þ§ñ §à§á§â§Ö§Õ§Ö§Ý§Ö§ß§Ú§ñ §Ö§ã§ä§î §Ý§Ú §Õ§Ñ§ß§ß§í§Ö §Ó §Ü§Ö§ê§Ö) ? §´§Ú§á§Ú§é§ß§í§Ö §è§Ú§æ§â§í: ?1 clock cycle §Õ§Ý§ñ L1 ?3-8 clock cycles §Õ§Ý§ñ L2 Miss Penalty ? §¯§Ö§à§Ò§ç§à§Õ§Ú§Þ§à §Õ§à§á§à§Ý§ß§Ú§ä§Ö§Ý§î§ß§à§Ö §Ó§â§Ö§Þ§ñ §Ó §ã§Ý§å§é§Ñ§Ö §á§â§à§Þ§Ñ§ç§Ñ ?25-100 cycles §Õ§Ý§ñ §à§ã§ß§à§Ó§ß§à§Û §á§Ñ§Þ§ñ§ä§Ú (RAM ) §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 19. §³§à§Ó§ã§Ö§Þ §ß§Ö§Þ§ß§à§Ô§à §à §Õ§Ú§ã§Ü§Ñ§ç §¥§Ú§ã§Ü§Ú, §à§ß§Ú §Þ§Ö§ç§Ñ§ß§Ú§é§Ö§ã§Ü§Ú§Ö => §Þ§Ö§Õ§Ý§Ö§ß§ß§í§Ö §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 20. §ª §Ö§ë§Ö §é§å§ä§î §é§å§ä§î §à §Õ§Ú§ã§Ü§Ñ§ç §²§Ñ§Ù§Þ§Ö§â §ß§Ö §Ú§Þ§Ö§Ö§ä §Ù§ß§Ñ§é§Ö§ß§Ú§ñ ( §é§Ñ§ë§Ö §Ó§ã§Ö§Ô§à ) §¥§Ý§ñ §Ò§à§Ý§î§ê§Ú§ß§ã§ä§Ó§Ñ §á§â§Ú§Ý§à§Ø§Ö§ß§Ú§Û §Ó§Ñ§Ø§ß§í§Þ §á§à§Ü§Ñ§Ù§Ñ§ä§Ö§Ý§Ö§Þ §ñ§Ó§Ý§ñ§Ö§ä§ã§ñ §Ü§à§Ý§Ú§é§Ö§ä§ã§Ó§à IOPS'§à§Ó §Ñ §ß§Ö Mb/s Latency §ß§Ñ§á§â§ñ§Þ§å§ð §Ù§Ñ§Ó§Ú§ã§Ú§ä §à§ä §â§Ñ§Ù§Þ§Ö§â§Ñ §Ò§Ý§à§Ü§Ñ §¯§Ö§ã§Ü§à§Ý§î§Ü§à §â§Ñ§Ù§Ý§Ú§é§ß§í§ç §á§â§à§æ§Ú§Ý§Ö§Û §ß§Ñ§Ô§â§å§Ù§Ü§Ú §å§Ó§Ö§Ý§Ú§é§Ú§Ó§Ñ§Ö§ä §Ó§â§Ö§Þ§ñ §à§ä§Ü§Ý§Ú§Ü§Ñ §Õ§Ý§ñ §Ü§Ñ§Ø§Õ§à§Ô§à §à§Ò§â§Ñ§ë§Ö§ß§Ú§ñ §¥§Ú§ã§Ü§Ú §Ú§ß§à§Ô§Õ§Ñ §Ý§à§Þ§Ñ§ð§ä§ã§ñ SSD §Ò§í§Ó§Ñ§ð§ä §â§Ñ§Ù§ß§í§Ö ( MLC §Ú SLC NAND, DRAM, etc ) §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 21. §¹§ä§à §Ø§Ö §Õ§Ö§Ý§Ñ§ä§î §ã IO? §µ§é§Ú§ä§í§Ó§Ñ§ä§î §ä§â§Ö§Ò§à§Ó§Ñ§ß§Ú§ñ §á§â§Ú §á§â§à§Ö§Ü§ä§Ú§â§à§Ó§Ñ§ß§Ú§Ú : §¦§ã§Ý§Ú §Õ§Ý§ñ §á§â§Ú§Ý§à§Ø§Ö§ß§Ú§ñ §Ü§â§Ú§ä§Ú§é§ß§à latency §ä§à §Õ§Ñ§ß§ß§í§Ö §ß§Ö §Õ§à§Ý§Ø§ß§í §é§Ú§ä§Ñ§ä§î§ã§ñ §ã §Õ§Ú§ã§Ü§Ñ ( Oracle SGA, in memory database, etc, etc, etc ) §¦§ã§Ý§Ú §Ø§Ö §Ü§â§Ú§ä§Ú§é§ß§à throughput §ä§à §Ó§Ñ§Ø§ß§à §á§à§Þ§ß§Ú§ä§î §á§â§à §Ó§í§â§Ñ§Ó§ß§Ú§Ó§Ñ§ß§Ú§Ö, §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ä§î memory intterleaving, §â§Ñ§Ò§à§ä§Ñ§ä§î §ã §Õ§Ñ§ß§ß§í§Þ§Ú §á§Ñ§â§â§Ñ§Ý§Ö§Ý§î§ß§à ( striping ) §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 22. §¹§ä§à §Ø§Ö §Õ§Ö§Ý§Ñ§ä§î §ã IO? §¦§ã§Ý§Ú §Ó§ã§Ö §å§Ø§Ö §ã§á§â§à§Ö§Ü§ä§Ú§â§à§Ó§Ñ§ß§à §Õ§à §ß§Ñ§ã? §°§á§ä§Ú§Þ§Ú§Ù§Ú§â§à§Ó§Ñ§ä§î! - §ª§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ä§î §Ò§à§Ý§î§ê§Ú§Ö §ã§ä§â§Ñ§ß§Ú§è§í §Õ§Ý§ñ §å§Þ§Ö§ß§î§ê§Ö§ß§Ú§ñ cache miss - §®§Ö§ß§ñ§ä§î §á§Ñ§â§Ñ§Þ§Ö§ä§â§í §Ó§í§Õ§Ö§Ý§Ö§ß§Ú§ñ §á§Ñ§Þ§ñ§ä§Ú §Õ§Ý§ñ §¢§¥ §ß§Ñ §ã§Ö§â§Ó§Ö§â§Ñ§ç §ã §Ñ§â§ç§Ú§ä§Ö§Ü§ä§å§â§à§Û NUMA - §ª§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ä§î §ã§á§Ö§è§Ú§Ñ§Ý§Ú§Ù§Ú§â§à§Ó§Ñ§ß§ß§í§Ö §Ñ§Ý§Ý§à§Ü§Ñ§ä§à§â§í §á§Ñ§Þ§ñ§ä§Ú §Õ§Ý§ñ §Þ§ß§à§Ô§à§á§à§ä§à§é§ß§í§ç §á§â§Ú§Ý§à§Ø§Ö§ß§Ú§Û - §Ú §ä§Ñ§Ü §Õ§Ñ§Ý§Ö§Ö. §±§â§Ú§×§Þ§à§Ó §à§é§Ö§ß§î §Þ§ß§à§Ô§à. §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 23. §° §é§×§Þ §ñ §ã§Ö§Û§é§Ñ§ã §â§Ñ§ã§ã§Ü§Ñ§Ù§í§Ó§Ñ§Ý? §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 24. §¥§Ý§ñ §â§Ñ§Ù§ß§í§ç §Ù§Ñ§Õ§Ñ§é ¡ §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 25. ¡ §â§Ñ§Ù§ß§í§Ö §Ú§ß§ã§ä§â§å§Þ§Ö§ß§ä§í §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 26. §£§í§Ó§à§Õ§í §¯§Ö §Ó§ã§Ö §ã§Ö§â§Ó§Ö§â§Ñ §à§Õ§Ú§ß§Ñ§Ü§à§Ó§à §á§à§Ý§Ö§Ù§ß§í §±§à§ß§Ú§Þ§Ñ§ß§Ú§Ö §å§Ù§Ü§Ú§ç §Þ§Ö§ã§ä §á§â§Ú§Ý§à§Ø§Ö§ß§Ú§ñ §á§à§Þ§à§Ø§Ö§ä §Ó§í§Ò§â§Ñ§ä§î §á§â§Ñ§Ó§Ú§Ý§î§ß§å§ð §Ü§à§ß§æ§Ú§Ô§å§â§Ñ§è§Ú§ð §¥§Ñ§Ø§Ö §ß§Ö§Ò§à§Ý§î§ê§Ú§Ö §Ú§Ù§Þ§Ö§ß§Ö§ß§Ú§ñ §Þ§à§Ô§å§ä §á§â§Ú§Ó§Ö§ã§ä§Ú §Ü §ã§å§ë§Ö§ã§ä§Ó§Ö§ß§ß§à§Þ§å §â§à§ã§ä§å/§á§Ñ§Õ§Ö§ß§Ú§ð §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§Ú §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 27. §£§à§á§â§à§ã§í? §¡§ß§ä§à§ß §±§Ñ§Ó§Ý§Ö§ß§Ü§à http://jetservice.ru pavlenko@jet.msk.su
- 28. §©§Ñ§á§Ñ§ã§ß§í§Ö §ã§Ý§Ñ§Û§Õ§í §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 29. Intel Core architecture L1 cache : 64kb §ß§Ñ §ñ§Õ§â§à L2 cache : 1-8Mb (§à§Ò§ë§Ú§Û) L3 cache : 8-16Mb (§à§Ò§ë§Ú§Û) §Ú §ß§Ö §Ó§à §Ó§ã§Ö§ç §á§â§à§è§Ö§ã§ã§à§â§Ñ§ç §¯§Ö§ä HT §±§à§ä§à§Þ§à§Ü §Ñ§â§ç§Ú§ä§Ö§Ü§ä§å§â§í Pentium Pro :-) 4 §ñ§Õ§â§Ñ ( 6 §Ó §à§Õ§ß§à§Û §â§Ö§Ñ§Ý§Ú§Ù§Ñ§è§Ú§Ú ) §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 30. Intel Nehalem architecture L1 cache : 64kb §ß§Ñ §ñ§Õ§â§à L2 cache : 256Kb §ß§Ñ §ñ§Õ§â§à L3 cache : 4-12Mb (§à§Ò§ë§Ú§Û) §³§ß§à§Ó§Ñ §á§à§ñ§Ó§Ú§Ý§ã§ñ Hiper-threading! §±§à§ñ§Ó§Ú§Ý§ã§ñ QuickPath (§Õ§à 8 §ñ§Õ§Ö§â ) §³§ä§Ñ§Ý NUMA §±§à§ñ§Ó§Ú§Ý§ã§ñ TLB! ( 512 ), §ß§à §ä§à§Ý§î§Ü§à §Õ§Ý§ñ ?§Þ§Ñ§Ý§Ö§ß§î§Ü§Ú§ç? §ã§ä§â§Ñ§ß§Ú§è ( 4K ) §¥§à§ã§ä§å§á §Ü ?§é§å§Ø§à§Û? §á§Ñ§Þ§ñ§ä§Ú §Õ§à§â§à§Ø§Ö §Ó 1.5 §â§Ñ§Ù§Ñ §£ Sandy Bridge : §¢§à§Ý§î§ê§Ö L3 cache ( §Õ§à 20 §®§Ò ) §¥§à§ã§ä§å§á §Õ§à L1 ¡ª 3 §ä§Ú§Ü§Ñ, §¥§à L2 - 8 §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
- 31. Power 7 L1 cache 64 §¬§Ò §ß§Ñ §ñ§Õ§â§à L2 cache 256 §¬§Ò §ß§Ñ §ñ§Õ§â§à L3 cache 32 §®§Ò ( §â§Ñ§Ù§Õ§Ö§Ý§Ö§ß, §ß§à §Õ§à§ã§ä§å§á §Ö§ã§ä§î §å §Ó§ã§Ö§ç §ñ§Õ§Ö§â ) §¥§à 8 §ñ§Õ§Ö§â §á§à 4 §á§à§ä§à§Ü§Ñ §ß§Ñ §ñ§Õ§â§à L3 §â§Ö§Ñ§Ý§Ú§Ù§à§Ó§Ñ§ß §é§Ö§â§Ö§Ù eDRAM §£§à§Ù§Þ§à§Ø§Ö§ß §Ú§ß§ä§Ö§â§Ü§à§ß§ß§Ö§Ü§ä §Õ§à 32 §á§â§à§è§Ö§ã§ã§à§â§à§Ó TLB size = 512 items 4-WAY Power 6 §Ò§í§Ý §Õ§Ó§å§ç§ñ§Õ§Ö§â§ß§í§Û Sparc T4 :L1 - 32Kb §Õ§Ý§ñ §ñ§Õ§â§Ñ L2 ¡ª 128Kb §ß§Ñ §ñ§Õ§â§à L3 - 4Mb §³§Ö§â§Ó§Ú§ã§ß§í§Û §è§Ö§ß§ä§â ? 2012 §ª§ß§æ§à§ã§Ú§ã§ä§Ö§Þ§í §¥§Ø§Ö§ä
Editor's Notes
- #6: §¥§Ý§ñ §Ò§à§Ý§î§ê§Ú§ß§ã§ä§Ó§Ñ §ã§Ú§ã§ä§Ö§Þ §á§â§à§Ú§Ù§Ó§à§Õ§Ú§ä§Ö§Ý§î§ß§à§ã§ä§î §Þ§Ö§ß§ñ§Ö§ä§ã§ñ §Ó §ï§Ü§ã§á§à§ß§Ö§ß§è§Ú§Ñ§Ý§î§ß§à§Û §Ù§Ñ§Ó§Ú§ã§Ú§Þ§à§ã§ä§î§ð. §²§Ö§Õ§Ü§à §Ú §Ó §ç§à§â§à§ê§à §ã§á§â§à§Ö§Ü§ä§Ú§â§à§Ó§Ñ§ß§ß§í§ç §ã§Ú§ã§ä§Ö§Þ§Ñ§ç §á§à §á§Ñ§â§Ñ§Ò§à§Ý§Ö. §¬§Ñ§Ü §ã§Ö§Ò§ñ §Ó§Ö§Õ§Ö§ä §Ó§Ñ§ê§Ñ §ã§Ú§ã§ä§Ö§Þ§Ñ?
- #7: §¡ §Ô§Õ§Ö §ß§Ñ§ç§à§Õ§Ú§ä§ã§ñ §Ó§Ñ§ê§Ñ §ã§Ú§ã§ä§Ö§Þ§Ñ?