From mboxrd@z Thu Jan 1 00:00:00 1970 From: Edward Shishkin Subject: Re: reiser4 mount options Date: Mon, 24 Dec 2007 03:38:29 +0300 Message-ID: <476EFF85.2070002@namesys.com> References: <14476466.post@talk.nabble.com> <476E6CE2.7030004@namesys.com> <14483298.post@talk.nabble.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <14483298.post@talk.nabble.com> Sender: reiserfs-devel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: butdiene Cc: reiserfs-devel@vger.kernel.org butdiene wrote: >right now, I'm using the following setting. mount options are not the same as >in /proc/mounts, I'm not sure which ones are accepted. > >but the system seems to be more responsible now. the optimal_io_size was >64KB, seems to be too small. > >I reduced the atom_max_size (from 0x2f238 = 784MB) to 0x800= 8MB. > >not sure how they would help. I will report later if it really helps. > >thanks > >mount|grep sda3;cat /proc/mounts |grep root >/dev/sda3 on / type reiser4 >(rw,iocharset=utf8,tmgr.atom_max_flushers=0,optimal_io_size=2097152,atom_max_size=0x800,atom_max_age=0x600,atom_max_flushers=0) >rootfs / rootfs rw 0 0 >/dev/root / reiser4 > > atom_max_size=0x2f238,atom_max_age=0x927c0,atom_min_size=0x100,atom_max_flushers=0x1,cbk_cache_slots=0x10 ^^^^^^^^^^^^^^^^^^^^ You have atom_max_size unchanged. Please, edit your /etc/fstab and reboot. Thanks, Edward. >0 0 > > >Edward Shishkin wrote: > > >>butdiene wrote: >> >> >> >>>Hi, >>> >>>I run reiser4 on a laptop. I got serious fsync/flush problem. >>> >>>almost randomly, the hard drive would run busy for minutes to dozens of >>>minutes. while the computer is still responsive during this period, but >>>firefox would hang until the hard gets idle again. >>> >>> >>> >>> >>Hm.. firefox is fsync-bound app? >> >> >> >>>I guess I can set mount options to improve the situation. >>> >>> >>> >>> >>That hang can have a complex nature. >> >>Well, try to play with the mount option "tmgr.atom_max_size=N", >>where N is atom size in blocks (by default it is total RAM pages / 4). >>Look at /proc/mounts to make sure that your changes take effect. >> >>If it doesn't help, then let me know. >> >>Thanks, >>Edward. >> >> >> >>>Any suggestion is appreciated. >>> >>>thanks >>> >>> >>> >>> >>- >>To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" >>in >>the body of a message to majordomo@vger.kernel.org >>More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> >> >> > > >