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redwood
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Joined: 27 Jan 2006
Posts: 279

PostPosted: Thu Dec 06, 2018 10:24 pm    Post subject: KDE / akonadi / thrashing my disk Reply with quote

There are only really two KDE programs that I need: okular and kmail. I need kmail lbecause I have multiple imaps accounts open and need to quickly sort emails between accounts and project subfolders (click and drag). Unfortunately, for a long while KDE has been painfullly slow for me. Currently on plasma-5.13.5 and kmail-18.08.2. Also running qt5 (5.11.1-r1).


Every once in a while if I run "akonadictl stop" and restart then things will be OK for a few days. Sometimes I might need to restart /etc/init.d/dbus for things to go right for a spell. If I'm running a non-KDE shell such as lxterminal, even the terminal is unresponsive until I stop akonadi. Simple things like "ls" , "htop", "dmesg" will hang for a minute or two while who knows what KDE is doing. I can hear my hard drives being thrashed, but I'm not memory starved:

Code:

free -h
              total        used        free      shared  buff/cache   available
Mem:          7.9Gi       1.8Gi       3.1Gi       921Mi       3.0Gi       4.5Gi
Swap:            0B          0B          0B


I see that there are current upgrades for plasma (15.14.3) and kde (18.03.3) but I have little confidence thie upgrades will fix the problem.
My akonadi database usage is a little over a half gig:

Code:

du -csh ~/.local/share/akonadi
569M   ~/.local/share/akonadi
569M   total


which hardly seems like a lot considering I have an ancient Pentium III on which I run a document archive program for OCR scanned documents and it currently has 24G of data stored in Oracle-BerkleyDB that it can handle just fine.

My problems only start when I run KDE programs (konsole, okular, kmail, etc).
My system is responsive if I kill all KDE programs and child processes.
I've also tried letting akonadi rebuild its indices by moving ~/.local/share/akonadi to a backup. kmail then is pretty unresponsive for a few hours while the courier-imap accounts are resynced and indexed. I wish I had the option of disabling akonadi alltogether but I realize it's integrated into all KDE programs. It's just such a PITA.

Current system resource usage via "atop":

Code:

ATOP - axp 2018/12/06  17:20:43 - 10s elapsed         2018/12/06  17:21:13                                                        --                                             10s elapsed
PRC | sys    3.26s | user  10.45s |               | #proc    482 | #trun     14 | #tslpi   911 |               | #tslpu     0 | #zombie    2 | clones     5 |               | #exit      0 |
CPU | sys      32% | user    104% |  irq       1% |              | idle     62% | wait      1% |               |              | steal     0% | guest     0% |  curf 2.21GHz | curscal   ?% |
CPL | avg1    0.33 | avg5    0.55 |               | avg15   0.89 |              |              |  csw   153875 | intr   57027 |              |              |  numcpu     2 |         |
MEM | tot     7.9G | free    3.0G |  cache   2.5G | dirty   0.0M | buff  181.7M | slab  406.4M |  slrec 309.8M | shmem 921.9M | shrss   2.3M | vmbal   0.0M |  hptot   0.0M | hpuse   0.0M |
SWP | tot     0.0M | free    0.0M |               |              |              |              |               |              |              |              |  vmcom   7.1G | vmlim   4.0G |
LVM |   crypt-home | busy      7% |  read       0 |              | write     81 | KiB/r      0 |  KiB/w      4 | MBr/s    0.0 | MBw/s    0.0 |              |  avq     3.95 | avio 8.58 ms |
LVM |      vg-home | busy      7% |  read       0 |              | write     93 | KiB/r      0 |  KiB/w      3 | MBr/s    0.0 | MBw/s    0.0 |              |  avq     1.15 | avio 7.37 ms |
MDD |          md4 | busy      0% |  read       0 |              | write    105 | KiB/r      0 |  KiB/w      3 | MBr/s    0.0 | MBw/s    0.0 |              |  avq     0.00 | avio 0.00 ms |
DSK |          sdc | busy      8% |  read       0 |              | write     95 | KiB/r      0 |  KiB/w      4 | MBr/s    0.0 | MBw/s    0.0 |              |  avq     1.53 | avio 8.04 ms |
DSK |          sde | busy      5% |  read       0 |              | write     95 | KiB/r      0 |  KiB/w      4 | MBr/s    0.0 | MBw/s    0.0 |              |  avq     1.93 | avio 4.83 ms |
NET | transport    | tcpi    1115 |  tcpo    1122 | udpi       0 | udpo       0 | tcpao      0 |  tcppo      0 | tcprs      0 | tcpie      0 | tcpor      0 |  udpnp      0 | udpie      0 |
NET | network      | ipi     1115 |  ipo     1122 |              | ipfrw      0 | deliv   1115 |               |              |              |              |  icmpi      0 | icmpo      0 |
NET | eth0   0% | pcki    1115 |  pcko    1122 | sp 1000 Mbps | si  208 Kbps | so  122 Kbps |  coll 0 | mlti 0 | erri 0 | erro 0 |  drpi 0 | drpo 0 |0 | drpi       0 | drpo       0 |
NET | br0     ---- | pcki    1115 |  pcko    1122 | sp    0 Mbps | si  195 Kbps | so  122 Kbps |  coll 0 | mlti 0 | erri 0 | erro 0 |  drpi 0 | drpo 0 |0 | drpi       0 | drpo       0 |

  PID      SYSCPU       USRCPUVGROW RGROW RDDSK W RGROW    RU RDDSKD ST    WRDSK      RUID  CPUNR C  EUID 1/4      ST EXC THR S      CPUNR CPU      CMD                                  1/5
27883       0.53s        1.56s          0K           0K          0K           0K      jeremy         jeremy        --         -         7   S          0        21%      akonadi_imap_r
27747       0.43s        1.06s       8196K         332K          0K           0K      jeremy         jeremy        --         -        70   S          0        15%      akonadiserver
27794       0.29s        1.05s          0K           0K          0K          68K      jeremy         jeremy        --         -        34   S          1        14%      mysqld
27112       0.16s    1.16s          0K       -2360K          0K           0K      jeremy         jeremy        --         -        44 S   S            0 12%     4palemoonemoon
 9878       0.24s    0.70s          0K           0K          0K           0K      jeremy         jeremy        --         -         1 S   S            0        10%      dbus-daemon
27739       0.08s    0.23s          0K        0K          0K           0K      jeremy         jeremy        --         -         3 R   R S          0         3%      akonadi_contro
20912       0.00s        0.26s          0K           0K          0K           0K      jeremy         jeremy        --         -         4   S          0         3%      lxterminal
27733       0.04s    0.20s          0K           0K          0K           0K      jeremy         jeremy        --         -        31 S   S            1         2%      kmail
 8890       0.10s    0.09s          0K           0K          0K           0K      root           root          --         -         2 S   S            0         2%      X
27882       0.03s    0.14s          0K           0K          0K           0K      jeremy         jeremy        --         -         7 S   S            0         2%      akonadi_imap_r
27893       0.04s    0.10s          0K           0K          0K           0K      jeremy         jeremy        --         -         5 S   S            1         1%      akonadi_mailfi
27914       0.04s        0.09s          0K           0K          0K           0K      jeremy         jeremy        --         -         5   S          1         1%      akonadi_sendla
27874       0.04s        0.09s          0K           0K          0K           0K      jeremy         jeremy        --         -         7   S          0         1%      akonadi_imap_r
20978       0.02s        0.11s          0K           0K          0K           0K      jeremy         jeremy        --         -         6   S          1         1%      pulseaudio
27861       0.03s        0.09s          0K           0K          0K           0K      jeremy         jeremy        --         -         5   S          0         1%      akonadi_archiv
27879       0.03s        0.09s          0K           0K          0K           0K      jeremy         jeremy        --         -         6   S          0         1%      akonadi_imap_r
27877       0.01s        0.11s          0K           0K          0K           0K      jeremy         jeremy        --         -         7   S          0         1%      akonadi_imap_r



I don't want to move to gnome.

I currently am running lxde with 4 desktops each with a couple lxterminals open with each of them having a half dozen or so tabs open to various projects I'm working on. I do need okular for viewing pdf files (acroread no longer available and the alternatives have various issues). Also need a mail program which allows me to keep several imap accounts simulatneouly open and to click-n-drag emails from one account to another easily to keep my emails sorted by project. The issue is not with my imap-server as I can use webmail (roundcube) just fine when kmail is completely unresponsive. Unfortunately roundcube only shows me one imap account at a time (there's a plugin which allows me to open up another account in another browser tab but don't think there's a way to drag an email from one tab to the other).


Thanks in advance for any ideas.
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Fitzcarraldo
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Joined: 30 Aug 2008
Posts: 1574
Location: United Kingdom

PostPosted: Fri Dec 07, 2018 12:28 am    Post subject: Reply with quote

Do you have the file ~/.config/akonadi/akonadiserverrc by any chance? If you do, have you tried changing the line 'StartServer=true' to 'StartServer=false'?

Code:
[Debug]
Tracer=null

[%General]
Driver=QMYSQL

[QMYSQL]
Host=
Name=akonadi
Options="UNIX_SOCKET=/tmp/akonadi-fitzcarraldo.JfHG9z/mysql.socket"
ServerPath=/usr/sbin/mysqld
StartServer=true

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redwood
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Joined: 27 Jan 2006
Posts: 279

PostPosted: Fri Dec 07, 2018 2:47 pm    Post subject: Reply with quote

Yes, I have that config file, but kmail isn't operational without akonadi running.
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