search

poelzi / ulatencyd

daemon to minimize latency on a linux system using cgroups
GNU General Public License v3.0
243 stars 30 forks source link

$ ulatency --gui #19

Closed artemklevtsov closed 13 years ago

artemklevtsov commented 13 years ago

$ ulatency --gui

Traceback (most recent call last): File "/usr/bin/ulatency", line 868, in main() File "/usr/bin/ulatency", line 795, in main sys.exit(QtGui().run()) File "/usr/bin/ulatency", line 545, in init self.tree = Tree(show_all = False) File "/usr/bin/ulatency", line 334, in init path = self.get_path() File "/usr/bin/ulatency", line 383, in get_path if not os.path.exists(path): File "/usr/lib/python2.7/genericpath.py", line 18, in exists os.stat(path) TypeError: coercing to Unicode: need string or buffer, NoneType found

Output "strace ulatency --gui" - http://paste.pocoo.org/show/346177/

poelzi commented 13 years ago

fixed it. you seem to have started the gui befor the daemon, right ?

artemklevtsov commented 13 years ago

daemon is running during start ulatency --gui. I specially restart daemon after first fail.

poelzi commented 13 years ago

thats strange. could you give me a cat /proc/mounts please. I fixed the bug, but it should only happened when the cgroup mountpoints are empty.

artemklevtsov commented 13 years ago

Sorry, I not update ulatencyd after you fix it.

poelzi commented 13 years ago

the gui should start up now, but i still don't understand why it has problems in the first place, thats why i would like to have your cat /proc/mounts.

artemklevtsov commented 13 years ago

I update ulatencyd. Now I get following output: adi-bear@unikum-laptop ~ $ ulatency --gui error: tree does not exist blkio memory gui started. ^C
and gui dos not appears. adi-bear@unikum-laptop ~ $ cat /proc/mounts rootfs / rootfs rw 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 sys /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 udev /dev devtmpfs rw,nosuid,relatime,size=10240k,nr_inodes=217007,mode=755 0 0 /dev/sda2 / ext4 rw,noatime,nodiratime,user_xattr,acl,barrier=1,data=writeback 0 0 devpts /dev/pts devpts rw,relatime,mode=600,ptmxmode=000 0 0 shm /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0 tmpfs /tmp tmpfs rw,nosuid,nodev,relatime,size=2097152k 0 0 tmpfs /var/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=10240k 0 0 tmpfs /var/run tmpfs rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755 0 0 /dev/sda3 /home ext4 rw,noatime,nodiratime,user_xattr,acl,barrier=1,data=writeback 0 0 none /sys/fs/cgroup tmpfs rw,relatime 0 0 none /sys/fs/cgroup/memory cgroup rw,relatime,memory,release_agent=/usr/lib/ulatencyd/ulatencyd_cleanup.lua 0 0 none /sys/fs/cgroup/blkio cgroup rw,relatime,blkio,release_agent=/usr/lib/ulatencyd/ulatencyd_cleanup.lua 0 0 unikum:/mnt/data/ /mnt/unikum/data nfs4 rw,relatime,vers=4,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.3,minorversion=0,local_lock=none,addr=192.168.1.2 0 0 unikum:/home/xxx /mnt/unikum/xxx nfs4 rw,relatime,vers=4,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.3,minorversion=0,local_lock=none,addr=192.168.1.2 0 0 unikum:/mnt/data1/ /mnt/unikum/data1 nfs4 rw,relatime,vers=4,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.3,minorversion=0,local_lock=none,addr=192.168.1.2 0 0

poelzi commented 13 years ago
  1. You are missing the cpu cgroup system in your kernel config. Without that, ulatencyd can't do anything good.
  2. the gui starts minimized in the systray, sure it isn't there ?
artemklevtsov commented 13 years ago

indeed, I was not careful. gui work. tell me, please, how called option in the kernel config.

poelzi commented 13 years ago

see the FAQ for the options required.

artemklevtsov commented 13 years ago

thanks for your reolys. in default archlinux kernel missing PROC_EVENTS and is not set CONFIG_CGROUP_MEM_RES_CTLR_SWAP_ENABLED options. seems I need compile custom kernel. thank again for your attention.

poelzi commented 13 years ago

are you sure you have: CONFIG_FAIR_GROUP_SCHED=y CONFIG_RT_GROUP_SCHED=y

enabled ?, because you are missing the cpu subsystem. Would be nice if you could open a bugreport on arch so the important stuff gets enabled on the default kernel.

artemklevtsov commented 13 years ago

adi-bear@unikum-laptop ~ $ zcat /proc/config.gz | grep CONFIG_FAIR_GROUP_SCHED CONFIG_FAIR_GROUP_SCHED=y adi-bear@unikum-laptop ~ $ zcat /proc/config.gz | grep CONFIG_RT_GROUP_SCHED CONFIG_RT_GROUP_SCHED=y