Xen project Mailing List

Interesting...a wait of 10% isn't great but isn't horrible either, I wouldn't see that as a cause of delays like that. (I recently had issues with a "new" board that had a lot of "steal" even when basically doing nothing, so I was curious if you were running into that too.)

Other than "apt" commands, how do other network-based tasks look?

I upgraded from Stretch to Buster a year or so ago and haven't run into this so far.

Other than apt commands, how does everything look?

On Thu, Jun 10, 2021 at 11:32 PM TheBearAK <thebearak@xxxxxxxxx> wrote:

Hovers around 10.5 wa and 0.2 to 0.3 in st.

Top processes are vifs with a loop4 popping up to the top once in a while along with rcu_sched.

I would guess the loop4 is the mounted disk image for the DomU.
So, after the 'apt-get update' finished, the wa dropped to 0.4 and st stayed at 0.2

On 6/10/21 4:29 PM, Chris Myers wrote:

Out of curiosity, how does "top" look when it's running? Especially things like "wa" (IOWait) and "st" (steal)?

On Thu, Jun 10, 2021 at 5:49 PM TheBearAK <thebearak@xxxxxxxxx> wrote:

First, hello. New to the list, but I've been using Xen Hypervisor for a
long time.

I'm curious if anyone else has had this issue.

I recently upgraded a server from Debian Squeeze to Buster with kernel
4.19.0-16-amd64 and found that apt/aptitude commands are slow in response.

For example, 'apt-get update' can take 10 minutes to complete, hanging
up on certain parts of the downloads either at 0% or 90%. This is
something that normally takes a few seconds.

Even the DomU's suffer the same issue.

On another server I have kernel 4.19.0-14-amd64 and it seems to be
running just fine most of the time. I do get some hiccups, but not
nearly as much as the above upgraded server.

I've also noticed that writes will sometimes pause for several seconds,
specially when transferring large files.

Setup:

E3-1230 V2 @ 3.30GHz

16 GB RAM

Hard drives are spinning disk. 2 TB drives (EXT4)

DomUs are using Disk.Img for their disk.

--

People use duct tape to fix everything....God used nails.

http://www.myerscountry.net

Re: Slow Apt