由于 Vscan 防病毒扫描软件的背压，在 CIFS 共享上经历了巨大的延迟

适用于

• ONTAP 9
• VSCAN 

问题

• 客户端在数据访问中遇到间歇性延迟
• VSCAN 间歇性断开与 SVM 的连接并且未扫描文件
• EMS 日志显示以下错误消息

 [?]  Fri Dec 08 04:13:44  0000 [Node1: kernel: ems.engine.suppressed:debug]: Event 'Nblade.vscanConnBackPressure' suppressed 439 times in last 84151 seconds.
 [?]  Fri Dec 08 04:13:44  0000 [Node1: kernel: Nblade.vscanConnBackPressure:error]: For Vserver "svm", AV server "10.48.xx.xx" is too busy to accept new scan requests.
 [?]  Fri Dec 08 04:16:18  0000 [Node1: kernel: Nblade.vscanConnInactive:notice]: For Vserver "svm", ONTAP(R) forcibly closed the vscan connection originated from the nonresponsive AV server "10.48.xx.xx".
 [?]  Fri Dec 08 04:16:18  0000 [Node1: OffboxVScanTableUpd: Nblade.scannerDisconnected:notice]: Vserver "svm" disconnected from Vscan server (IP: 10.48.xx.xx).

• 将 VSCAN 服务器上排队请求的阈值数从 1 增加到 24，但问题仍然存在