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#1 2012-02-08 02:45:36
- Oxyd
- Member
- From: Czech Republic
- Registered: 2008-01-17
- Posts: 167
Freshly booted Arch uses ~150 MB of memory
Hello everyone.
I've been trying to figure out what makes Arch use about 150 MB of RAM right up the start. To be precise: When I boot my Arch install with just syslog-ng and network daemons, no GUI loaded, freshly logged in, free -m reports 146 MB used memory -- sans buffers and cache (that is, the second line of output).
I consider that to be a bit too much -- surely bare Arch shouldn't need that many. Also I care because I noticed my machine has been hitting the swap a bit too much for my liking (and I've got 3 GB of RAM). I suspect this is not just one-time extra memory used, but overall memory usage being higher than it should be (although I can't know for sure -- but that's what I've been wanting to find out).
I Googled around a bit and saw some people suggesting it could be the nVidia proprietary driver (which I'm using). I tried using the nouveau driver; I tried switching to the on-board graphics chip (which is and AMD/ATI one) but to no avail -- memory usage right after start did decrease a little, but we're talking about 10 MB here. Certainly not what I'd been hoping for.
So I thought it could be some process I hadn't noticed. I killed everything except init, login and bash, but once again nothing much -- the system was using around 110 MB of memory for three userland processes.
I then tried downgrading the kernel to 3.0 -- freshly booted Arch with stock 3.0 kernel was using 97 MB of RAM -- an improvement once again, but still I think that's too much for just the base system.
So, anyone got any ideas what could be the cause? Any other stuff to test?
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#2 2012-02-08 02:51:22
- karol
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- Registered: 2009-05-06
- Posts: 25,440
Re: Freshly booted Arch uses ~150 MB of memory
But which process is using that memory?
My 32-bit Arch uses 19MB.
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#3 2012-02-08 03:00:25
- Jristz
- Member
- From: America/Santiago
- Registered: 2011-06-11
- Posts: 1,048
Re: Freshly booted Arch uses ~150 MB of memory
Realy RAM and Processor may have diferents values
exaple:
my old P4 (Kernel 3.0.3) use round 25-32Mran (i686-only)
my second less new but actual machine (x86_64) celeron (corex) use 16-20Mram
Lenovo ThinkPad L420 modified
:: Intel i7 2560QM :: 8 GB RAM :: SSD 256 GB ::
:: DVD read+Writter :: 3 USB 3.0 Expresa Card ::
:: a Favulous 1 mins lasting Io-Li battery ::cry::
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#4 2012-02-08 03:48:43
- Oxyd
- Member
- From: Czech Republic
- Registered: 2008-01-17
- Posts: 167
Re: Freshly booted Arch uses ~150 MB of memory
But which process is using that memory?
My 32-bit Arch uses 19MB.
Well, I don't know. As I said -- I tried killing almost every process (except for init and the shell), and the memory usage stayed that high. Even though init + bash together didn't use nearly that much.
Realy RAM and Processor may have diferents values
exaple:
my old P4 (Kernel 3.0.3) use round 25-32Mran (i686-only)
my second less new but actual machine (x86_64) celeron (corex) use 16-20Mram
Yes, I know. I'm on x86_64 -- I should have mentioned that. I would be more than happy with 50 MB RAM -- I don't quite care about a few MB here or there. But still -- what I'm seeing is 150 MB -- almost ten times as much as your machines.
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#5 2012-02-08 03:53:02
- karol
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Re: Freshly booted Arch uses ~150 MB of memory
Can you post the output of 'ps aux'?
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#6 2012-02-08 04:13:47
- Oxyd
- Member
- From: Czech Republic
- Registered: 2008-01-17
- Posts: 167
Re: Freshly booted Arch uses ~150 MB of memory
Sure thing.
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 2.6 0.0 4192 672 ? Ss 05:09 0:00 init [3]
root 2 0.0 0.0 0 0 ? S 05:09 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S 05:09 0:00 [ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/0:0]
root 5 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:0]
root 6 0.0 0.0 0 0 ? S 05:09 0:00 [migration/0]
root 7 0.0 0.0 0 0 ? S 05:09 0:00 [watchdog/0]
root 8 0.0 0.0 0 0 ? S 05:09 0:00 [migration/1]
root 9 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/1:0]
root 10 0.0 0.0 0 0 ? S 05:09 0:00 [ksoftirqd/1]
root 11 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/0:1]
root 12 0.0 0.0 0 0 ? S 05:09 0:00 [watchdog/1]
root 13 0.0 0.0 0 0 ? S< 05:09 0:00 [cpuset]
root 14 0.0 0.0 0 0 ? S< 05:09 0:00 [khelper]
root 15 0.0 0.0 0 0 ? S 05:09 0:00 [kdevtmpfs]
root 16 0.0 0.0 0 0 ? S< 05:09 0:00 [netns]
root 17 0.0 0.0 0 0 ? S 05:09 0:00 [sync_supers]
root 18 0.0 0.0 0 0 ? S 05:09 0:00 [bdi-default]
root 19 0.0 0.0 0 0 ? S< 05:09 0:00 [kblockd]
root 43 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/1:1]
root 44 0.0 0.0 0 0 ? S 05:09 0:00 [khungtaskd]
root 45 0.0 0.0 0 0 ? S 05:09 0:00 [kswapd0]
root 46 0.0 0.0 0 0 ? SN 05:09 0:00 [ksmd]
root 47 0.0 0.0 0 0 ? SN 05:09 0:00 [khugepaged]
root 48 0.0 0.0 0 0 ? S 05:09 0:00 [fsnotify_mark]
root 49 0.0 0.0 0 0 ? S< 05:09 0:00 [crypto]
root 51 0.0 0.0 0 0 ? S< 05:09 0:00 [kthrotld]
root 54 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/1:2]
root 104 0.0 0.0 0 0 ? S 05:09 0:00 [khubd]
root 113 0.0 0.0 0 0 ? S< 05:09 0:00 [ata_sff]
root 120 0.0 0.0 0 0 ? S 05:09 0:00 [scsi_eh_0]
root 121 0.0 0.0 0 0 ? S 05:09 0:00 [scsi_eh_1]
root 122 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:1]
root 124 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:2]
root 129 0.0 0.0 0 0 ? S 05:09 0:00 [scsi_eh_2]
root 130 0.0 0.0 0 0 ? S 05:09 0:00 [scsi_eh_3]
root 131 0.0 0.0 0 0 ? S 05:09 0:00 [scsi_eh_4]
root 132 0.0 0.0 0 0 ? S 05:09 0:00 [scsi_eh_5]
root 133 0.0 0.0 0 0 ? S 05:09 0:00 [scsi_eh_6]
root 134 0.0 0.0 0 0 ? S 05:09 0:00 [scsi_eh_7]
root 135 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:3]
root 136 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:4]
root 137 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:5]
root 138 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:6]
root 139 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:7]
root 140 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/u:8]
root 152 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/1:3]
root 153 0.0 0.0 0 0 ? S 05:09 0:00 [kworker/0:2]
root 160 0.0 0.0 0 0 ? S 05:09 0:00 [jbd2/sdb2-8]
root 161 0.0 0.0 0 0 ? S< 05:09 0:00 [ext4-dio-unwrit]
root 210 0.4 0.0 21104 3016 ? Ss 05:09 0:00 /lib/udev/udevd --daemon
root 214 0.0 0.0 0 0 ? S< 05:09 0:00 [iprt]
root 271 0.0 0.0 21092 1048 ? S 05:09 0:00 /lib/udev/udevd --daemon
root 272 0.0 0.0 21092 1048 ? S 05:09 0:00 /lib/udev/udevd --daemon
root 279 0.0 0.0 0 0 ? S< 05:09 0:00 [edac-poller]
root 295 0.0 0.0 0 0 ? S< 05:09 0:00 [hd-audio0]
root 322 0.0 0.0 0 0 ? S< 05:09 0:00 [hd-audio1]
root 370 0.0 0.0 0 0 ? S 05:09 0:00 [jbd2/sdb4-8]
root 371 0.0 0.0 0 0 ? S< 05:09 0:00 [ext4-dio-unwrit]
root 608 0.0 0.0 30984 444 ? S 05:09 0:00 supervising syslog-ng
root 609 0.1 0.1 60584 3312 ? Ss 05:09 0:00 /usr/sbin/syslog-ng
root 642 0.0 0.0 60920 1752 tty1 Ss 05:09 0:00 /bin/login --
root 643 0.0 0.0 8224 780 tty2 Ss+ 05:09 0:00 /sbin/agetty -8 -s 38400 tty2 linux
root 644 0.0 0.0 8224 780 tty3 Ss+ 05:09 0:00 /sbin/agetty -8 -s 38400 tty3 linux
root 645 0.0 0.0 8224 784 tty4 Ss+ 05:09 0:00 /sbin/agetty -8 -s 38400 tty4 linux
root 646 0.0 0.0 8224 780 tty5 Ss+ 05:09 0:00 /sbin/agetty -8 -s 38400 tty5 linux
root 647 0.0 0.0 8224 784 tty6 Ss+ 05:09 0:00 /sbin/agetty -8 -s 38400 tty6 linux
root 648 0.0 0.0 0 0 ? S 05:09 0:00 [flush-8:16]
root 649 0.0 0.0 0 0 ? S 05:09 0:00 [flush-8:0]
oxyd 650 1.0 0.1 30528 3232 tty1 S 05:09 0:00 -zsh
oxyd 662 0.0 0.0 10848 1200 tty1 R+ 05:10 0:00 ps auxFor the record, here's the state of the machine at the time I took the ps aux -- freshly booted, completely bare:
$ uptime
05:10:06 up 0 min, 1 user, load average: 0.86, 0.23, 0.08
$ free -m
total used free shared buffers cached
Mem: 3013 184 2828 0 25 26
-/+ buffers/cache: 132 2880
Swap: 1023 0 1023Offline
#7 2012-02-08 19:07:53
- meph
- Member
- Registered: 2011-06-06
- Posts: 160
Re: Freshly booted Arch uses ~150 MB of memory
dmesg|grep Memorywill show you how much memory is reserved by the kernel
dmesg|grep TLBseems to show that 64MB is reserved for TLB, which should make up for the difference between 32 and 64 bit. So it's not used by a process per se and that's why you can't find one, it's just reserved memory.
Unless I got it wrong 
Running arch is like raising a puppy - if you spend a bit of time with it each day and do just a bit of training you'll end up with the most loyal partner you could want; if you lock it in a room and don't check on if for several days, it'll tear apart your stuff and poop everywhere.
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#8 2012-02-08 19:23:45
- Oxyd
- Member
- From: Czech Republic
- Registered: 2008-01-17
- Posts: 167
Re: Freshly booted Arch uses ~150 MB of memory
$ dmesg | grep Memory
[ 0.000000] Memory: 3080148k/3143552k available (4281k kernel code, 452k absent, 62952k reserved, 4599k data, 728k init)
[ 4.243278] VBoxDrv: dbg - g_abExecMemory=ffffffffa0351be0
$ dmesg | grep TLB
[ 1.123651] HugeTLB registered 2 MB page size, pre-allocated 0 pagesAh, looks like there's 63 MB reserved for the kernel. I'm not sure how much is allocated for TLB in my case from that output, though.
Still I'm not sure how this adds up -- kernel reserved 64 MB for itself -- okay. Where's the remaining 64 MB? Is it the TLB?
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#9 2012-02-08 19:57:49
- karol
- Archivist
- Registered: 2009-05-06
- Posts: 25,440
Re: Freshly booted Arch uses ~150 MB of memory
[karol@black ~]$ ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 3.2 0.1 2124 612 ? Ss 20:43 0:00 init [3]
root 2 0.0 0.0 0 0 ? S 20:43 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S 20:43 0:00 [ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S 20:43 0:00 [kworker/0:0]
root 5 0.0 0.0 0 0 ? S 20:43 0:00 [kworker/u:0]
root 6 0.0 0.0 0 0 ? S 20:43 0:00 [migration/0]
root 7 0.0 0.0 0 0 ? S 20:43 0:00 [watchdog/0]
root 8 0.0 0.0 0 0 ? S< 20:43 0:00 [cpuset]
root 9 0.0 0.0 0 0 ? S< 20:43 0:00 [khelper]
root 10 0.0 0.0 0 0 ? S 20:43 0:00 [kdevtmpfs]
root 11 0.0 0.0 0 0 ? S< 20:43 0:00 [netns]
root 12 0.0 0.0 0 0 ? S 20:43 0:00 [sync_supers]
root 13 0.0 0.0 0 0 ? S 20:43 0:00 [bdi-default]
root 14 0.0 0.0 0 0 ? S< 20:43 0:00 [kblockd]
root 15 0.0 0.0 0 0 ? S 20:43 0:00 [kworker/0:1]
root 16 0.0 0.0 0 0 ? S 20:43 0:00 [khungtaskd]
root 17 0.0 0.0 0 0 ? S 20:43 0:00 [kswapd0]
root 18 0.0 0.0 0 0 ? SN 20:43 0:00 [ksmd]
root 19 0.0 0.0 0 0 ? S 20:43 0:00 [fsnotify_mark]
root 20 0.0 0.0 0 0 ? S< 20:43 0:00 [crypto]
root 22 0.0 0.0 0 0 ? S< 20:43 0:00 [kthrotld]
root 23 0.0 0.0 0 0 ? S 20:43 0:00 [kworker/0:2]
root 39 0.0 0.0 0 0 ? S< 20:43 0:00 [ata_sff]
root 40 0.0 0.0 0 0 ? S 20:43 0:00 [scsi_eh_0]
root 41 0.0 0.0 0 0 ? S 20:43 0:00 [scsi_eh_1]
root 42 0.0 0.0 0 0 ? S 20:43 0:00 [kworker/u:1]
root 43 0.0 0.0 0 0 ? S 20:43 0:00 [kworker/u:2]
root 62 0.0 0.0 0 0 ? S 20:43 0:00 [kjournald]
root 111 0.6 0.5 4536 2724 ? Ss 20:43 0:00 /lib/udev/udevd --daemon
root 149 0.0 0.1 4416 620 ? S 20:43 0:00 /lib/udev/udevd --daemon
root 150 0.0 0.1 4416 620 ? S 20:43 0:00 /lib/udev/udevd --daemon
root 154 0.0 0.0 0 0 ? S 20:43 0:00 [khubd]
root 166 0.0 0.0 0 0 ? S< 20:43 0:00 [kpsmoused]
root 169 0.1 0.0 0 0 ? S 20:43 0:00 [kworker/0:3]
root 178 0.0 0.0 0 0 ? S 20:43 0:00 [flush-8:0]
root 183 0.0 0.0 0 0 ? S 20:43 0:00 [kjournald]
root 463 0.0 0.0 4360 400 ? S 20:43 0:00 supervising syslog-ng
root 464 0.2 0.5 7112 2824 ? Ss 20:43 0:00 /usr/sbin/syslog-ng
dbus 490 0.0 0.0 2868 356 ? Ss 20:43 0:00 /usr/bin/dbus-daemon --system
root 492 0.0 0.1 3536 632 ? S 20:43 0:00 /bin/bash /etc/rc.multi
root 499 0.0 0.2 3532 1408 ? S 20:43 0:00 /bin/bash /etc/rc.d/network start
root 526 0.0 0.1 2332 776 ? S 20:43 0:00 dhcpcd -q eth0
root 535 0.0 0.0 2364 380 ? Ss 20:43 0:00 /usr/sbin/gpm -m /dev/psaux -t ps2
root 537 0.0 0.0 3424 356 ? S 20:43 0:00 /bin/bash /etc/rc.local
root 539 0.0 0.0 2112 280 ? S 20:43 0:00 sleep 300
root 540 0.0 0.1 2144 596 ? Ss 20:43 0:00 /usr/sbin/acpid
root 546 0.0 0.1 2168 616 ? Ss 20:43 0:00 /usr/sbin/crond -S -l info
root 552 0.0 0.1 2324 588 ? Ss 20:43 0:00 /usr/sbin/vnstatd -d
root 555 0.0 0.2 3240 1456 tty1 Ss 20:43 0:00 /bin/login -f
root 556 0.0 0.1 4224 724 tty2 Ss+ 20:43 0:00 /sbin/agetty -8 38400 tty2 linux
root 557 0.0 0.1 4224 720 tty3 Ss+ 20:43 0:00 /sbin/agetty -8 38400 tty3 linux
karol 558 0.3 0.5 6508 2784 tty1 S 20:43 0:00 -bash
root 566 0.0 0.0 0 0 ? S 20:43 0:00 [flush-254:0]
karol 568 0.0 0.2 4792 1116 tty1 R+ 20:43 0:00 ps aux[karol@black ~]$ free -m
total used free shared buffers cached
Mem: 490 47 443 0 2 24
-/+ buffers/cache: 19 471
Swap: 308 0 308
[karol@black ~]$ pstree
init─┬─acpid
├─2*[agetty]
├─crond
├─dbus-daemon
├─gpm
├─login───bash───pstree
├─rc.local───sleep
├─rc.multi───network───dhcpcd
├─syslog-ng───syslog-ng
├─udevd───2*[udevd]
└─vnstatd
[karol@black ~]$ dmesg | grep Memory
[ 0.000000] Memory: 499432k/515584k available (3573k kernel code, 15636k reserved, 1404k data, 516k init, 0k highmem)
[karol@black ~]$ dmesg | grep TLB
[ 0.407588] HugeTLB registered 4 MB page size, pre-allocated 0 pagesI don't understand the dmesg output, but the RSS from the processes adds up to 19MB.
Last edited by karol (2012-02-08 20:01:44)
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#10 2012-02-08 20:07:29
- Oxyd
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- From: Czech Republic
- Registered: 2008-01-17
- Posts: 167
Re: Freshly booted Arch uses ~150 MB of memory
karol, and you're on 32 bit, right? It's kidna weird that the difference between 32 bit and 64 bit should be almost 100 MB...
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#11 2012-02-08 20:15:37
- masteryod
- Member
- Registered: 2010-05-19
- Posts: 433
Re: Freshly booted Arch uses ~150 MB of memory
karol, and you're on 32 bit, right? It's kidna weird that the difference between 32 bit and 64 bit should be almost 100 MB...
about memory consumption on 32bit vs 64bit look at this: https://bbs.archlinux.org/viewtopic.php?id=134279
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#12 2012-02-08 20:26:56
- karol
- Archivist
- Registered: 2009-05-06
- Posts: 25,440
Re: Freshly booted Arch uses ~150 MB of memory
Yes, I'm using 32-bit and I don't have any 64-bit-capable CPU so I can't compare, but masteryod linked to a thread that links to another thread that says https://bbs.archlinux.org/viewtopic.php … 02#p860702 so it indeed may be TLB on 64-bit that "eats" some RAM.
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#13 2012-02-08 23:06:42
- meph
- Member
- Registered: 2011-06-06
- Posts: 160
Re: Freshly booted Arch uses ~150 MB of memory
$ dmesg | grep Memory [ 0.000000] Memory: 3080148k/3143552k available (4281k kernel code, 452k absent, 62952k reserved, 4599k data, 728k init) [ 4.243278] VBoxDrv: dbg - g_abExecMemory=ffffffffa0351be0 $ dmesg | grep TLB [ 1.123651] HugeTLB registered 2 MB page size, pre-allocated 0 pagesAh, looks like there's 63 MB reserved for the kernel. I'm not sure how much is allocated for TLB in my case from that output, though.
Still I'm not sure how this adds up -- kernel reserved 64 MB for itself -- okay. Where's the remaining 64 MB? Is it the TLB?
Those 63 MB we possibly found now doesn't represent reserved memory for whole kernel, just TLB. I don't know why it does that, though I think it might have something to do with logical assumption that for modern 64bit systems 63 MB of memory is a non-issue, at least for most of them. So, as long as the amount of memory actually used is just below those 63 MBs (and thus the reserved amount isn't completely wasted), then it's safe to simply reserve it. All of that doesn't mean that there isn't other stuff going on, TLB is just one I was able to find. If you really want to find out, then I'd suggest going through dmesg line after line, there may be more memory eaters to discover.
Karol, your 32bit system only uses 19 MBs. That seems to be really low, although I haven't used a 32bit system for a while, don't have anything to compare with. Have you taken any steps to optimize your system and reduce memory usage? I never actually did any research in this area, but I'm sure there are some possibilities, beginning with say some custom compiled and optimized kernel.
Running arch is like raising a puppy - if you spend a bit of time with it each day and do just a bit of training you'll end up with the most loyal partner you could want; if you lock it in a room and don't check on if for several days, it'll tear apart your stuff and poop everywhere.
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#14 2012-02-08 23:52:36
- Oxyd
- Member
- From: Czech Republic
- Registered: 2008-01-17
- Posts: 167
Re: Freshly booted Arch uses ~150 MB of memory
As far as custom kernel goes -- I just tried that. First I tried just plain vanilla kernel.org source with Arch's config, then I tried disabling everything I don't need, but nope -- it's at around 120 MB now. Which is a decrease, but I still feel it's high.
Or is it high even? Throughout this thread I've been assuming that even on a 64-bit system, it isn't common for it to be this much. From what I found out, it should be somewhere around 50 MB for a 64-bit system.
Last edited by Oxyd (2012-02-08 23:53:24)
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#15 2012-02-08 23:56:21
- karol
- Archivist
- Registered: 2009-05-06
- Posts: 25,440
Re: Freshly booted Arch uses ~150 MB of memory
I use stock packages.
I just went down to 14 MB by disabling all the daemons, extra ttys and using dash instead of bash. At this point the output of ps accounted only for 8 MB, so 6 MB went missing:
$ pstree
init-+-login---dash---pstree
`-udevd---2*[udevd]$ free -m
total used free shared buffers cached
Mem: 490 35 455 0 2 18
-/+ buffers/cache: 14 476
Swap: 308 0 308$ ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 1.2 0.1 2124 608 ? Ss 00:42 0:00 init [3]
root 2 0.0 0.0 0 0 ? S 00:42 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S 00:42 0:00 [ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S 00:42 0:00 [kworker/0:0]
root 5 0.0 0.0 0 0 ? S 00:42 0:00 [kworker/u:0]
root 6 0.0 0.0 0 0 ? S 00:42 0:00 [migration/0]
root 7 0.0 0.0 0 0 ? S 00:42 0:00 [watchdog/0]
root 8 0.0 0.0 0 0 ? S< 00:42 0:00 [cpuset]
root 9 0.0 0.0 0 0 ? S< 00:42 0:00 [khelper]
root 10 0.0 0.0 0 0 ? S 00:42 0:00 [kdevtmpfs]
root 11 0.0 0.0 0 0 ? S< 00:42 0:00 [netns]
root 12 0.0 0.0 0 0 ? S 00:42 0:00 [sync_supers]
root 13 0.0 0.0 0 0 ? S 00:42 0:00 [bdi-default]
root 14 0.0 0.0 0 0 ? S< 00:42 0:00 [kblockd]
root 15 0.0 0.0 0 0 ? S 00:42 0:00 [kworker/0:1]
root 16 0.0 0.0 0 0 ? S 00:42 0:00 [khungtaskd]
root 17 0.0 0.0 0 0 ? S 00:42 0:00 [kswapd0]
root 18 0.0 0.0 0 0 ? SN 00:42 0:00 [ksmd]
root 19 0.0 0.0 0 0 ? S 00:42 0:00 [fsnotify_mark]
root 20 0.0 0.0 0 0 ? S< 00:42 0:00 [crypto]
root 22 0.0 0.0 0 0 ? S< 00:42 0:00 [kthrotld]
root 23 0.0 0.0 0 0 ? S 00:42 0:00 [kworker/0:2]
root 39 0.0 0.0 0 0 ? S< 00:42 0:00 [ata_sff]
root 40 0.0 0.0 0 0 ? S 00:42 0:00 [scsi_eh_0]
root 41 0.0 0.0 0 0 ? S 00:42 0:00 [scsi_eh_1]
root 42 0.0 0.0 0 0 ? S 00:42 0:00 [kworker/u:1]
root 43 0.0 0.0 0 0 ? S 00:42 0:00 [kworker/u:2]
root 62 0.0 0.0 0 0 ? S 00:42 0:00 [kjournald]
root 111 0.2 0.5 4520 2716 ? Ss 00:42 0:00 /lib/udev/udevd --daemon
root 135 0.0 0.1 4416 772 ? S 00:42 0:00 /lib/udev/udevd --daemon
root 139 0.0 0.1 4484 796 ? S 00:42 0:00 /lib/udev/udevd --daemon
root 142 0.0 0.0 0 0 ? S< 00:42 0:00 [kpsmoused]
root 147 0.0 0.0 0 0 ? S 00:42 0:00 [khubd]
root 164 0.0 0.0 0 0 ? S 00:42 0:00 [flush-8:0]
root 168 0.0 0.0 0 0 ? S 00:42 0:00 [kjournald]
root 438 0.1 0.2 3240 1488 tty2 Ss 00:42 0:00 /bin/login --
root 439 0.0 0.0 0 0 ? S 00:43 0:00 [flush-254:0]
1005 440 0.0 0.1 2192 548 tty2 S 00:43 0:00 -dash
1005 448 0.0 0.1 2612 904 tty2 R+ 00:43 0:00 ps auxI optimize by using lightweight apps.
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#16 2012-02-09 00:22:23
- Oxyd
- Member
- From: Czech Republic
- Registered: 2008-01-17
- Posts: 167
Re: Freshly booted Arch uses ~150 MB of memory
And another thing: I installed Arch on VirtualBox -- it's a 64-bit clean install, up to date -- and right after boot it uses only 36 MB of memory. That means there's definitely something wrong with my machine...
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#17 2012-02-09 00:26:21
- meph
- Member
- Registered: 2011-06-06
- Posts: 160
Re: Freshly booted Arch uses ~150 MB of memory
Oxyd, there's something fishy going on. I just went down to 98 MB, only had to stop daemons, if I did the same stuff as karol I'd probably be somewhere around 90 MB. In your original post you said ~150 MB on a fresh system, with almost everything turned off. That's weird...
If I deducted 64 MB reserved for TLB, I'd be around 35 MB. That's more like it. Still it's almost twice as much as karol's original 19 MB though, and I don't know why.
Running arch is like raising a puppy - if you spend a bit of time with it each day and do just a bit of training you'll end up with the most loyal partner you could want; if you lock it in a room and don't check on if for several days, it'll tear apart your stuff and poop everywhere.
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#18 2012-02-09 00:30:57
- meph
- Member
- Registered: 2011-06-06
- Posts: 160
Re: Freshly booted Arch uses ~150 MB of memory
And another thing: I installed Arch on VirtualBox -- it's a 64-bit clean install, up to date -- and right after boot it uses only 36 MB of memory. That means there's definitely something wrong with my machine...
... or with the VM. From our common experience and from the links in this thread, we know that that being at >100 MB on 64bit is normal. I don't know why it is so, but it seems to be just normal. So far your VM is the only one which doesn't do that.
edit: I mean, as I said above, your fresh install being at around 150 MB is weird. But that 36 MB virtual machine doesn't compute either. I just don't know.... a quick guess, by any chance, do you use any proprietary drivers on your machine? nvidia perhaps?
Last edited by meph (2012-02-09 00:33:29)
Running arch is like raising a puppy - if you spend a bit of time with it each day and do just a bit of training you'll end up with the most loyal partner you could want; if you lock it in a room and don't check on if for several days, it'll tear apart your stuff and poop everywhere.
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#19 2012-02-09 00:31:19
- Oxyd
- Member
- From: Czech Republic
- Registered: 2008-01-17
- Posts: 167
Re: Freshly booted Arch uses ~150 MB of memory
Yes, definitely something fishy going on here. Especially see my post above -- looks like you can get much lower than 90 MB even with 64-bit system on a virtual machine (not sure if it could possibly be using memory thanks to being run inside a VM).
Edit: Uhuh.. It could perhaps share some memory with the host (I do have guest additions installed), that's true.
Last edited by Oxyd (2012-02-09 00:33:06)
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#20 2012-02-09 00:38:40
- meph
- Member
- Registered: 2011-06-06
- Posts: 160
Re: Freshly booted Arch uses ~150 MB of memory
By the way, your fresh VM's 36 MB used is exactly the same as my 98 MB if I deducted that tlb reserved memory. Don't think that's a coincidence... All it tells us is that fresh 64 bit uses say 35-40 MB.
Running arch is like raising a puppy - if you spend a bit of time with it each day and do just a bit of training you'll end up with the most loyal partner you could want; if you lock it in a room and don't check on if for several days, it'll tear apart your stuff and poop everywhere.
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#21 2012-03-20 03:34:49
- workdowg
- Member
- Registered: 2010-12-31
- Posts: 69
Re: Freshly booted Arch uses ~150 MB of memory
By the way, your fresh VM's 36 MB used is exactly the same as my 98 MB if I deducted that tlb reserved memory. Don't think that's a coincidence... All it tells us is that fresh 64 bit uses say 35-40 MB.
Ok... So how can we reduce the amount it is setting aside?
Here is mine on an upgraded x64 install.
free -m
total used free shared buffers cached
Mem: 3958 879 3079 0 72 388
-/+ buffers/cache: 418 3539
Swap: 3812 0 3812
dmesg|grep Memory
[ 0.000000] Memory: 3981824k/4980736k available (4490k kernel code, 787336k absent, 211576k reserved, 4412k data, 736k init)
dmesg|grep TLB
[ 1.287810] HugeTLB registered 2 MB page size, pre-allocated 0 pagesNotice mine is reserving ~212MB!
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#22 2012-03-20 05:12:19
- helloworld1
- Member
- Registered: 2010-12-26
- Posts: 72
Re: Freshly booted Arch uses ~150 MB of memory
I used XMonad and the start memory is about 132MB. Sans XWindow and XMonad, it should use less.
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