Re: Rik spreading bullshit about VM

rwhron
2002-01-17T01:23:16Z

About running the Andrea VM in 4M:
I booted in single user mode.

bash-2.05a# uname -a
Linux mountain 2.4.18pre2aa2 #1 Wed Jan 9 21:44:03 EST 2002 i586 unknown

bash-2.05a# dmesg| grep mem
Kernel command line: BOOT_IMAGE=2418p2aa2 ro root=1602 console=ttyS1,38400n8 single mem=4m
Memory: 2100k/4096k available (891k kernel code, 1608k reserved, 215k data, 196k init, 0k highmem)
Freeing unused kernel memory: 196k freed

Manually started syslogd, klogd and brought up the lo and eth0 interfaces and started sshd.
I can ssh into the box:

mountain:/$ ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.4 0.0 1288 0 ? SW 19:24 0:06 init [S]
root 2 0.0 0.0 0 0 ? SW 19:24 0:00 [keventd]
root 3 0.0 0.0 0 0 ? SWN 19:24 0:00 [ksoftirqd_CPU0]
root 4 0.1 0.0 0 0 ? SW 19:24 0:02 [kswapd]
root 5 0.0 0.0 0 0 ? SW 19:24 0:00 [bdflush]
root 6 0.0 0.0 0 0 ? SW 19:24 0:00 [kupdated]
root 7 0.0 0.0 0 0 ? SW 19:24 0:00 [kreiserfsd]
root 21 0.0 0.0 1288 0 ttyS1 SW 19:25 0:00 init [S]
root 22 0.0 0.0 2212 0 ttyS1 SW 19:25 0:00 bash
root 46 0.0 0.0 1444 0 ? SW 19:37 0:00 /usr/sbin/syslogd -m0
root 49 0.0 0.0 1292 0 ? SW 19:38 0:00 /usr/sbin/klogd -c3 -x -k /boot/System.map-2.4.18pre2aa2
root 63 0.0 0.0 0 0 ? SW 19:47 0:00 [eth0]
root 68 0.5 0.0 2672 0 ? SW 19:47 0:00 sshd
root 69 0.9 0.8 2756 20 ? D 19:48 0:00 sshd
hrandoz 70 1.9 0.0 2192 0 pts/0 SW 19:48 0:01 -bash
hrandoz 75 40.0 4.1 2504 96 pts/0 R 19:49 0:00 ps aux

mountain:/$ cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 2351104 2232320 118784 0 344064 249856
Swap: 156270592 1409024 154861568
MemTotal: 2296 kB
MemFree: 116 kB
MemShared: 0 kB
Buffers: 336 kB
Cached: 204 kB
SwapCached: 40 kB
Active: 68 kB
Inactive: 516 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 2296 kB
LowFree: 116 kB
SwapTotal: 152608 kB
SwapFree: 151232 kB

hrandoz@mountain:/$ /sbin/swapon -s
Filename Type Size Used Priority
/dev/hda3 partition 152608 1372 -1

top:
7:55pm up 31 min, 1 user, load average: 1.30, 0.71, 0.32
16 processes: 15 sleeping, 1 running, 0 zombie, 0 stopped
CPU states: 0.1% user, 4.6% system, 0.0% nice, 95.1% idle
Mem: 2296K av, 2096K used, 200K free, 0K shrd, 316K buff
Swap: 152608K av, 1488K used, 151120K free 96K cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
79 hrandoz 14 0 316 200 184 R 2.0 8.7 0:02 top
69 root 18 0 352 0 0 SW 1.9 0.0 0:03 sshd
1 root 20 0 56 0 0 SW 0.0 0.0 0:06 init
2 root 20 0 0 0 0 SW 0.0 0.0 0:00 keventd
3 root 20 19 0 0 0 SWN 0.0 0.0 0:00 ksoftirqd_CPU0
4 root 20 0 0 0 0 SW 0.0 0.0 0:03 kswapd
5 root 3 0 0 0 0 SW 0.0 0.0 0:00 bdflush
6 root 20 0 0 0 0 SW 0.0 0.0 0:00 kupdated
7 root 20 0 0 0 0 SW 0.0 0.0 0:00 kreiserfsd
21 root 9 0 56 0 0 SW 0.0 0.0 0:00 init
22 root 20 0 296 0 0 SW 0.0 0.0 0:00 bash
46 root 20 0 108 0 0 SW 0.0 0.0 0:00 syslogd
49 root 20 0 72 0 0 SW 0.0 0.0 0:00 klogd
63 root 20 0 0 0 0 SW 0.0 0.0 0:00 eth0
68 root 20 0 276 0 0 SW 0.0 0.0 0:00 sshd
70 hrandoz 20 0 276 0 0 SW 0.0 0.0 0:01 bash

bash-2.05a# df -kT
Filesystem Type 1k-blocks Used Available Use% Mounted on
/dev/hdc2 reiserfs 9768728 4194328 5574400 43% /
/dev/hdc3 ext2 8064432 4912 7649872 1% /opt/testing

Running 4M is interesting. If I really wanted to run 4M, I'd use ash
for the shell, and try uClibc instead of glibc.

The test that really impresses me the most about 2.4.18pre2aa2 is what
I see on this test on an Athlon 1333 with 1024MB RAM:

simultaneously:
run continuous loop of mtest01 -p 85 -w # allocate and write to 85% of VM
create and cpio 10 330 MB files
nice -19 setiathome &
listen to mp3blaster # a few skips at the beginning, then smooth.

I've tested a bunch of kernels lately. This is only what's sitting in /boot
since I last cleaned it out:

mountain:/boot$ ls vml*
vmlinuz vmlinuz-2.4.17rc2aa2-old vmlinuz-2.4.18-pre3
vmlinuz-2.4.18pre2 vmlinuz-2.4.18pre3ll vmlinuz-2.5.1-dj11
vmlinuz-2.5.2-pre10 vmlinuz-2.5.2-pre9 vmlinuz-2.4.17
vmlinuz-2.4.17rc2aa2-wli vmlinuz-2.4.18-pre4 vmlinuz-2.4.18pre2aa1
vmlinuz-2.4.18pre3pe vmlinuz-2.5.1-dj13 vmlinuz-2.5.2-pre11
vmlinuz-2.5.2-pre9mingo vmlinuz-2.4.17-rmap11a vmlinuz-2.4.17rmap11b
vmlinuz-2.4.18pre1-mjc2nio vmlinuz-2.4.18pre2aa2 vmlinuz-2.4.18pre3pelb
vmlinuz-2.5.1-dj14 vmlinuz-2.5.2-pre5 vmlinuz.old
vmlinuz-2.4.17rc2aa2 vmlinuz-2.4.18-pre1 vmlinuz-2.4.18pre1mjc2
vmlinuz-2.4.18pre3-ac2 vmlinuz-2.5.1 vmlinuz-2.5.2
vmlinuz-2.5.2-pre6-mingo

IMHO, 2.4.18pre2aa2 is the best!

Some kernel test results at:
http://home.earthlink.net/~rwhron/kernel/k6-2-475.html

# from the 4M box
mountain:/boot$ uptime
8:24pm up 1:00, 1 user, load average: 0.08, 0.04, 0.09

--
Randy Hron