[Info-vax] BL860i2 blade unexplained system disk slowdowns

[Kenneth Randell]

On Thursday, June 9, 2022 at 9:43:08 PM UTC-4, Edgar Ulloa wrote:
> Hi Kenneth 
> 
> Inside the onboard administrator do you see something abnormal in that blade? 
> 
> Show interconnect info all 
> 
> Show health 
> 
> Already at the operating system level, is there a process that is writing a lot? 
> 
> $monitor proc/topcpu/int=3 
> $monitor proc/topfault 
> $monitor dlock 
> $monitor rms 
> 
> System disk space? 
> 
> What does swapfile and pagefile look like? 
> 
> Has any file on the entire system disk reached its version limit? 
> 
> Any error during boot? 
> $type sys$system:startup.log 
> 
> And how about the network, any collision? 
> tcpip>netstat –i 
> Lancp>sh dev/count ewa0 (your card) 
> 
> if the account file is defined and exist? 
> $sh log acco 
> $dir $1$xxx:[xxxxxxx]acc*.dat (same place that log show) 
> 
> some process in rwast state... example opcom? 
> I look forward to your comments

There are no indications of any issues from the O/A, ILO, or any of the above VMS commands.  The best indicator I have is the disk response time as reported by the SDA XFC extension, but that still does not explain 'why'.

This value for I/O response time is 'normal':

I/O Response Times (This Volume)
  Overall Average:                0.3301 milliseconds
  Cache Hit:                      0.0158 milliseconds
  Disk:                           4.6630 milliseconds
  Accuracy:                     99 %

This value is from earlier today when the system became non-reponsive.

I/O Response Times (This Volume)
  Overall Average:                4.7281 milliseconds
  Cache Hit:                      0.0172 milliseconds
  Disk:                          80.7186 milliseconds
  Accuracy:                    100 %