硬件加密卡,硬件加解密卡。

用于把加密解密,数据压缩等,从CPU卸载到加速卡上。

 

所有文档汇总:https://01.org/intel-quickassist-technology

性能调优手册:https://01.org/sites/default/files/downloads//330687qatperformanceoptimizationguiderev007us.pdf

 

三种编程模型:interrupt mode, polling mode,epoll mode

intel推荐polling mode

 

简单的一些管理方法,备忘

  1. [root@tong ~]# lspci |grep QAT
  2. 05:00.0 Co-processor: Intel Corporation DH895XCC Series QAT
  3. [root@tong ~]# ls /sys/kernel/debug/qat_dh895xcc_0000\:05\:00.0/
  4. cnv_errors dev_cfg fw_counters heartbeat heartbeat_failed heartbeat_sent transport version
  5. [root@tong ~]# cat /sys/kernel/debug/qat_dh895xcc_0000\:05\:00.0/fw_counters
  6. +------------------------------------------------+
  7. | FW Statistics for Qat Device |
  8. +------------------------------------------------+
  9. | Firmware Requests [AE 0]: 27465873 |
  10. | Firmware Responses[AE 0]: 27465873 |
  11. +------------------------------------------------+
  12. ... ...

 

更多

https://github.com/intel/asynch_mode_nginx

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