Re: nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13

2022-03-27 Thread Rick Macklem
Yoshihiro Ota wrote: > I've been building default kernel, that is GENERIC for releng and stable > branches. > > I see GENERIC-NODEBUG on head but don't seem to find it on releng/ > nor stable/ > I grepped /usr/src/* for std.nodebug but don't seem have a match... > I wonder how nodebug kicks in rel

Re: nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13

2022-03-22 Thread Yoshihiro Ota
I've been building default kernel, that is GENERIC for releng and stable branches. I see GENERIC-NODEBUG on head but don't seem to find it on releng/ nor stable/ I grepped /usr/src/* for std.nodebug but don't seem have a match... I wonder how nodebug kicks in releng. I added "enable DDB" to i386

Re: nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13

2022-03-20 Thread Rick Macklem
mike tancsa wrote: > On 3/20/2022 7:43 AM, mike tancsa wrote: >> On 3/18/2022 9:18 PM, Yoshihiro Ota wrote: >>> I had built several versions between releng/13.0 branch point to >>> stable/13 (before releng/13.1 was created) and all of them had such >> performance degrade. >>> >>> I started suspect

Re: nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13

2022-03-20 Thread mike tancsa
On 3/20/2022 7:43 AM, mike tancsa wrote: On 3/18/2022 9:18 PM, Yoshihiro Ota wrote: I had built several versions between releng/13.0 branch point to stable/13 (before releng/13.1 was created) and all of them had such performance degrade. I started suspecting stable debug options and thus buil

Re: nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13

2022-03-20 Thread mike tancsa
On 3/18/2022 9:18 PM, Yoshihiro Ota wrote: I had built several versions between releng/13.0 branch point to stable/13 (before releng/13.1 was created) and all of them had such performance degrade. I started suspecting stable debug options and thus built releng/13.1 and tested. I don't see NFS s

Re: nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13

2022-03-18 Thread Yoshihiro Ota
Hi, In short, it looks releng/13.1 doesn't have issues. I haven't confirmed why fully but I'm suspecting debugging option on stable results in such performance penalty. It look a while to build bisect kernels (due to some compile errors) and suspious test results - all of stable kernels seemd t

Re: nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13

2022-03-09 Thread Rick Macklem
Yoshihiro Ota wrote: > Hi, > > I'm on stable/13 with latest code base. > I started testing pre-13.1 branch. > > I noticed major performance degrades with NFS when all CPUs are fully > utilized. > > This happends with stable/13 but not releng/13.0 nor releng/12.3. NFS performance is sensitive to R

nfsd becomes slow when machine CPU usage is at or over 100% on STABLE/13

2022-03-09 Thread Yoshihiro Ota
Hi, I'm on stable/13 with latest code base. I started testing pre-13.1 branch. I noticed major performance degrades with NFS when all CPUs are fully utilized. This happends with stable/13 but not releng/13.0 nor releng/12.3. I had NFS server with above versions and rsynced nfs mount to ufs moun