topic What process is running making filer spike to high CPU in ONTAP Discussions https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27461#M6410 <HTML><HEAD></HEAD><BODY><P>I noticed this morning, between 4:00am-4:30am, one of my controllers spiked to 100% CPU Utilization.&nbsp; Screenshot attached.</P><P>I drilled down to each volume to see if any of them where running high IOPs during the same time, and didnt find anything unusual.&nbsp; Most of my snapshots and snapmirror happens between 8:00pm-midnight.&nbsp; Nothing else I can think of runs between 4:00am-4:30am.&nbsp; What else can I look<SPAN style="font-family: arial,helvetica,sans-serif;"> at to </SPAN><SPAN style="font-family: arial,helvetica,sans-serif;">determine why this</SPAN> controller hit 100%???</P></BODY></HTML> Thu, 05 Jun 2025 06:45:58 GMT txskibum2000 2025-06-05T06:45:58Z What process is running making filer spike to high CPU https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27461#M6410 <HTML><HEAD></HEAD><BODY><P>I noticed this morning, between 4:00am-4:30am, one of my controllers spiked to 100% CPU Utilization.&nbsp; Screenshot attached.</P><P>I drilled down to each volume to see if any of them where running high IOPs during the same time, and didnt find anything unusual.&nbsp; Most of my snapshots and snapmirror happens between 8:00pm-midnight.&nbsp; Nothing else I can think of runs between 4:00am-4:30am.&nbsp; What else can I look<SPAN style="font-family: arial,helvetica,sans-serif;"> at to </SPAN><SPAN style="font-family: arial,helvetica,sans-serif;">determine why this</SPAN> controller hit 100%???</P></BODY></HTML> Thu, 05 Jun 2025 06:45:58 GMT https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27461#M6410 txskibum2000 2025-06-05T06:45:58Z What process is running making filer spike to high CPU https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27467#M6411 <HTML><HEAD></HEAD><BODY><P>Are you running SIS on any of your volumes?</P><P></P><P>Does this happen every day?</P></BODY></HTML> Thu, 22 Sep 2011 07:39:33 GMT https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27467#M6411 rwelshman 2011-09-22T07:39:33Z Re: What process is running making filer spike to high CPU https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27474#M6413 <HTML><HEAD></HEAD><BODY><P>Yes. I do have deduplication scheduled on about 7 NFS volumes. I did notice a couple of them run longer than others, for some reason. Is Dedup (sis) actually that CPU intensive? Thanks for your response.</P><P>Dale</P></BODY></HTML> Thu, 22 Sep 2011 13:59:19 GMT https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27474#M6413 txskibum2000 2011-09-22T13:59:19Z Re: What process is running making filer spike to high CPU https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27478#M6416 <HTML><HEAD></HEAD><BODY><P>often we see one cpu pegged but other cpus are free for wafl_exempt processes for user access... if you run "sysstat -M 1" in advanced/diag mode you can see all cpus and cpu domains... I think asis runs in kahuna (please correct me someone in engineering if not) which will use one cpu.</P></BODY></HTML> Thu, 22 Sep 2011 15:13:08 GMT https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27478#M6416 scottgelb 2011-09-22T15:13:08Z Re: What process is running making filer spike to high CPU https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27486#M6420 <HTML><HEAD></HEAD><BODY><P>Thank you Scott for reminding me about the sysstat –M command. Next time I have a spike, I will look into it.</P><P></P><P>I have also reorganized my deduplication schedule. I increased the number of days (3 time a week, instead of 2) and spread them out a bit.</P><P></P><P>Dale</P></BODY></HTML> Thu, 22 Sep 2011 19:16:54 GMT https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27486#M6420 txskibum2000 2011-09-22T19:16:54Z Re: What process is running making filer spike to high CPU https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27490#M6423 <HTML><HEAD></HEAD><BODY><P>Getting a perfstat during the spike will help find the bottleneck too, but sounds like you are managing it by changing asis schedules. </P><P></P><P>Typos Sent on Blackberry Wireless</P></BODY></HTML> Thu, 22 Sep 2011 19:19:54 GMT https://community.netapp.com/t5/ONTAP-Discussions/What-process-is-running-making-filer-spike-to-high-CPU/m-p/27490#M6423 scottgelb 2011-09-22T19:19:54Z