praganj wrote: > Since early versions of piCoreplayer i am using my own scripts to stop > all procesess which are not necessary for playing music few minutes > after boot process - httpd, udevd, udhcpc, crond, dropbear. > In this way Pi has more ressources for squeezelite and IMHO sound > quality with a very good usb dac and very good hifi system is better. > > Would it be possible to built in one extra option for high end freaks > into picoreplayer gui allowing to stop all unnecessary processess 5 or > 10 minutes after booting, but only then, when there is no access to web > gui ? > > In this way it will be possible to change configuration just after > reboot and later all possible CPU/bus ressources could be available to > squeezelite. > > In my scripts i am also unloading unused kernel modules and umounting > unnecessary mounts, but greatest impact has stopping some unused > services and tcpip optimization. > > I don't want to start a flame war about "bits are bits" and when it is > working, than it is working, i just have a proposition to add some "high > end approach" to this great piece of software :) > > Here is my script for Pi 2 whith usb dac (waveio+buffalo II) : > > ######################################## > # add at the end of /home/tc/www/cgi-bin/do_rebootstuff.sh > # make backup with sudo filetool.sh -b > > sleep 600 > > # some tcpip optimizing > sudo sysctl -w net.core.rmem_max=26214400 > sudo sysctl -w net.core.wmem_max=26214400 > sudo sysctl -w net.ipv4.tcp_rmem='4096 1048576 26214400' > sudo sysctl -w net.ipv4.tcp_wmem='4096 1048576 26214400' > sudo sysctl -w net.ipv4.tcp_mem='26214400 26214400 26214400' > sudo sysctl -w net.ipv4.route.flush=1 > sudo sysctl -w net.ipv4.tcp_no_metrics_save=1 > sudo sysctl -w net.ipv4.tcp_moderate_rcvbuf=1 > sudo sysctl -w net.ipv4.tcp_timestamps=0 > sudo sysctl -w net.ipv4.tcp_sack=0 > sudo sysctl -w net.ipv4.tcp_window_scaling=1 > > # unload unsused kernel modules > > sudo rmmod snd_bcm2835 snd_soc_pcm512x_i2c snd_soc_tas5713 i2c_bcm2708 > spi_bcm2708 snd_soc_bcm2708_i2s > sudo rmmod snd_soc_pcm512x regmap_i2c regmap_mmio snd_soc_core > snd_pcm_dmaengine snd_compress > > sleep 3 > > # stop services > > sudo /usr/local/etc/init.d/httpd stop > sudo kill -9 $(pidof udevd) > sudo kill -9 $(pidof udhcpc) > sudo kill -9 $(pidof crond) > > sudo umount /dev/loop1 > sudo umount /dev/loop5 > > sudo killall dropbear > sudo umount /dev/loop0 > sudo sh -c "sync; echo 3 > /proc/sys/vm/drop_caches" > > # end
Hi praganj, No flame wars here. :D Thanks for reporting your findings. We have added the "User commands" feature on the tweaks page to give people hooks into the booting process. Here's is what I suggest. Place your commands into a script, clean.sh Comment out sleep 600, we will do that later. chmod 755 clean.sh Put the script into the /opt (or /home/tc) directory. Do a backup, "sudo filetool.sh -b" or just press a "Save" button on the web gui. In "User command #1" add: sleep 600; /opt/clean.sh & Hit the "Save" button. Reboot. For testing I suggest "sleep 60" it still gives you enough time to adjust things. regards Greg ------------------------------------------------------------------------ Greg Erskine's Profile: http://forums.slimdevices.com/member.php?userid=7403 View this thread: http://forums.slimdevices.com/showthread.php?t=97803 _______________________________________________ unix mailing list unix@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/unix
