Mesa hm2/hm2_7i96s.0: error finishing read

I just tried
and got hm2/hm2_7i96s.0: error finishing read! itr-25604 so quite a bit better but not good enough for a machine. Good think this is my dev PC.

JT

I would try 6.1 and 4.19

6.1:

sudo apt-get update
sudo apt-get install build-essential bin86 kernel-package libqt4-dev #libncurses5-dev pkg-config libssl-dev

mkdir rtlinux
cd rtlinux
wget git.kernel.org/torvalds/t/linux-6.1-rc3.tar.gz
wget www.kernel.org/pub/linux/kernel/projects...6.1-rc3-rt2.patch.gz
tar -xpf linux-6.1-rc3.tar.gz
gunzip patch-6.1-rc3-rt2.patch.gz
cp patch-6.1-rc3-rt2.patch linux-6.1-rc3
cd linux-6.1-rc3
cat patch-6.1-rc3-rt2.patch | patch -p1
make xconfig
make -j4
sudo make INSTALL_MOD_STRIP=1 modules_install
sudo make install

4.19
cd ~
sudo apt-get update
sudo apt-get install build-essential bin86 kernel-package libqt4-dev #libncurses5-dev pkg-config libssl-dev

mkdir rtlinux
cd rtlinux
wget www.kernel.org/pub/linux/kernel/v4.x/linux-4.19.255.tar.xz
wget www.kernel.org/pub/linux/kernel/projects...9.255-rt113.patch.gz
tar -xpf linux-4.19.255.tar.xz
gunzip patch-4.19.255-rt113.patch.gz
cp patch-4.19.255-rt113.patch linux-4.19.255
cd linux-4.19.255
cat patch-4.19.255-rt113.patch | patch -p1
make xconfig
make -j4
sudo make modules_install
sudo make install


Both work acceptably on my somewhat troublesome Elite 800 G1

Also if your test PC has a Intel Ethernet chip, you must disable irq coalescing
with ethtool.

Checking ping times will tell you if this is successful.

What sort of ping times should we see?
I'm at between .214 to .340 ms now.

That's pretty bad

What Host and what Ethernet chip?

Heres My 800 G1:

(note, the first ping is longer because an ARP request/reply are added)

PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=0.180 ms
64 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.121 ms
64 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.122 ms
64 bytes from 10.10.10.10: icmp_seq=4 ttl=64 time=0.121 ms
64 bytes from 10.10.10.10: icmp_seq=5 ttl=64 time=0.121 ms
64 bytes from 10.10.10.10: icmp_seq=6 ttl=64 time=0.136 ms
64 bytes from 10.10.10.10: icmp_seq=7 ttl=64 time=0.123 ms
64 bytes from 10.10.10.10: icmp_seq=8 ttl=64 time=0.122 ms
64 bytes from 10.10.10.10: icmp_seq=9 ttl=64 time=0.121 ms

I get better (about 80-100) on a 8300

This is from Mint21 install.

My older system is OK, but Mint21 has great features.

sh@sh-HP-EliteDesk-800-G1-SFF:~$ uname -a
Linux sh-HP-EliteDesk-800-G1-SFF 5.19.0-2-rt-amd64 #1 SMP PREEMPT_RT Debian 5.19.11-1 (2022-09-24) x86_64 x86_64 x86_64 GNU/Linux


sh@sh-HP-EliteDesk-800-G1-SFF:~$ ping 10.10.10.10
PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=0.517 ms
64 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.330 ms
64 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.249 ms
64 bytes from 10.10.10.10: icmp_seq=4 ttl=64 time=0.348 ms
64 bytes from 10.10.10.10: icmp_seq=5 ttl=64 time=0.295 ms
64 bytes from 10.10.10.10: icmp_seq=6 ttl=64 time=0.301 ms
64 bytes from 10.10.10.10: icmp_seq=7 ttl=64 time=0.241 ms
64 bytes from 10.10.10.10: icmp_seq=8 ttl=64 time=0.280 ms
64 bytes from 10.10.10.10: icmp_seq=9 ttl=64 time=0.312 ms
64 bytes from 10.10.10.10: icmp_seq=10 ttl=64 time=0.238 ms
64 bytes from 10.10.10.10: icmp_seq=11 ttl=64 time=0.340 ms
64 bytes from 10.10.10.10: icmp_seq=12 ttl=64 time=0.213 ms
64 bytes from 10.10.10.10: icmp_seq=13 ttl=64 time=0.313 ms
64 bytes from 10.10.10.10: icmp_seq=14 ttl=64 time=0.221 ms
64 bytes from 10.10.10.10: icmp_seq=15 ttl=64 time=0.271 ms
64 bytes from 10.10.10.10: icmp_seq=16 ttl=64 time=0.234 ms
64 bytes from 10.10.10.10: icmp_seq=17 ttl=64 time=0.270 ms
64 bytes from 10.10.10.10: icmp_seq=18 ttl=64 time=0.275 ms
64 bytes from 10.10.10.10: icmp_seq=19 ttl=64 time=0.254 ms
64 bytes from 10.10.10.10: icmp_seq=20 ttl=64 time=0.275 ms
64 bytes from 10.10.10.10: icmp_seq=21 ttl=64 time=0.282 ms
64 bytes from 10.10.10.10: icmp_seq=22 ttl=64 time=0.276 ms
64 bytes from 10.10.10.10: icmp_seq=23 ttl=64 time=0.246 ms
64 bytes from 10.10.10.10: icmp_seq=24 ttl=64 time=0.302 ms
64 bytes from 10.10.10.10: icmp_seq=25 ttl=64 time=0.277 ms
64 bytes from 10.10.10.10: icmp_seq=26 ttl=64 time=0.323 ms
64 bytes from 10.10.10.10: icmp_seq=27 ttl=64 time=0.235 ms
64 bytes from 10.10.10.10: icmp_seq=28 ttl=64 time=0.271 ms
64 bytes from 10.10.10.10: icmp_seq=29 ttl=64 time=0.313 ms
64 bytes from 10.10.10.10: icmp_seq=30 ttl=64 time=0.281 ms
64 bytes from 10.10.10.10: icmp_seq=31 ttl=64 time=0.272 ms
64 bytes from 10.10.10.10: icmp_seq=32 ttl=64 time=0.287 ms
64 bytes from 10.10.10.10: icmp_seq=33 ttl=64 time=0.328 ms
64 bytes from 10.10.10.10: icmp_seq=34 ttl=64 time=0.279 ms
64 bytes from 10.10.10.10: icmp_seq=35 ttl=64 time=0.267 ms
64 bytes from 10.10.10.10: icmp_seq=36 ttl=64 time=0.344 ms
64 bytes from 10.10.10.10: icmp_seq=37 ttl=64 time=0.249 ms
64 bytes from 10.10.10.10: icmp_seq=38 ttl=64 time=0.246 ms

The ping times are about the same on Debian, but no errors.

sh@debian:~$ uname -a
Linux debian 4.19.0-17-rt-amd64 #1 SMP PREEMPT RT Debian 4.19.194-2 (2021-06-21) x86_64 GNU/Linux


sh@debian:~$ ping 10.10.10.10
PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=0.477 ms
64 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.399 ms
64 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.279 ms
64 bytes from 10.10.10.10: icmp_seq=4 ttl=64 time=0.280 ms
64 bytes from 10.10.10.10: icmp_seq=5 ttl=64 time=0.305 ms
64 bytes from 10.10.10.10: icmp_seq=6 ttl=64 time=0.309 ms
64 bytes from 10.10.10.10: icmp_seq=7 ttl=64 time=0.312 ms
64 bytes from 10.10.10.10: icmp_seq=8 ttl=64 time=0.312 ms
64 bytes from 10.10.10.10: icmp_seq=9 ttl=64 time=0.328 ms
64 bytes from 10.10.10.10: icmp_seq=10 ttl=64 time=0.319 ms
64 bytes from 10.10.10.10: icmp_seq=11 ttl=64 time=0.310 ms
64 bytes from 10.10.10.10: icmp_seq=12 ttl=64 time=0.306 ms
64 bytes from 10.10.10.10: icmp_seq=13 ttl=64 time=0.270 ms
64 bytes from 10.10.10.10: icmp_seq=14 ttl=64 time=0.208 ms
64 bytes from 10.10.10.10: icmp_seq=15 ttl=64 time=0.356 ms
64 bytes from 10.10.10.10: icmp_seq=16 ttl=64 time=0.302 ms
64 bytes from 10.10.10.10: icmp_seq=17 ttl=64 time=0.301 ms
64 bytes from 10.10.10.10: icmp_seq=18 ttl=64 time=0.361 ms
64 bytes from 10.10.10.10: icmp_seq=19 ttl=64 time=0.253 ms
64 bytes from 10.10.10.10: icmp_seq=20 ttl=64 time=0.328 ms
64 bytes from 10.10.10.10: icmp_seq=21 ttl=64 time=0.284 ms
64 bytes from 10.10.10.10: icmp_seq=22 ttl=64 time=0.314 ms
64 bytes from 10.10.10.10: icmp_seq=23 ttl=64 time=0.283 ms
64 bytes from 10.10.10.10: icmp_seq=24 ttl=64 time=0.306 ms
64 bytes from 10.10.10.10: icmp_seq=25 ttl=64 time=0.361 ms
64 bytes from 10.10.10.10: icmp_seq=26 ttl=64 time=0.388 ms
64 bytes from 10.10.10.10: icmp_seq=27 ttl=64 time=0.312 ms

--- 10.10.10.10 ping statistics ---
27 packets transmitted, 27 received, 0% packet loss, time 656ms
rtt min/avg/max/mdev = 0.208/0.317/0.477/0.050 ms

It looks like you do not have IRQ coalescing disabled
try the ping times after:

sudo ethtool -C [your-ethernet-device-name] rx-usecs 0

This is on Debian

sh@debian:~$ sudo ethtool -C eno1 rx-usecs 0
[sudo] password for sh:
sudo: ethtool: command not found

Yes, found it, and it makes a lot of difference.

64 bytes from 10.10.10.10: icmp_seq=62 ttl=64 time=0.178 ms
64 bytes from 10.10.10.10: icmp_seq=63 ttl=64 time=0.189 ms
64 bytes from 10.10.10.10: icmp_seq=64 ttl=64 time=0.168 ms
64 bytes from 10.10.10.10: icmp_seq=65 ttl=64 time=0.205 ms
64 bytes from 10.10.10.10: icmp_seq=66 ttl=64 time=0.211 ms
64 bytes from 10.10.10.10: icmp_seq=67 ttl=64 time=0.198 ms
64 bytes from 10.10.10.10: icmp_seq=68 ttl=64 time=0.206 ms
^C
--- 10.10.10.10 ping statistics ---
68 packets transmitted, 68 received, 0% packet loss, time 654ms
rtt min/avg/max/mdev = 0.154/0.198/0.220/0.019 ms