search for: cfq_cic_lookup

...81.463089] nouveau 0000:01:00.0: nouveau_channel_free: freeing fifo 1 [ 281.486950] [TTM] Zone kernel: Used memory at exit: 0 kiB. [ 281.486956] [TTM] Zone highmem: Used memory at exit: 0 kiB. [ 288.525197] ------------[ cut here ]------------ [ 288.525215] WARNING: at block/cfq-iosched.c:1771 cfq_cic_lookup+0x61/0xce() [ 288.525222] Hardware name: XPS M1530 [ 288.525226] Modules linked in: fuse nouveau ttm drm_kms_helper drm agpgart i2c_algo_bit iwl3945 iwlcore mac80211 cfg80211 ohci1394 ieee1394 btusb bluetooth rfkill sdhci_pci sdhci mmc_core ricoh_mmc sky2 cpufreq_conservati...

On 06/21/2011 01:15 PM, Jan Stilow wrote: > Hello, > > Nirbheek Chauhan <nirbheek <at> gentoo.org> writes: >> [...] >> >> Every few minutes, (I guess) when applications do fsync (firefox, >> xchat, vim, etc), all applications that use fsync() hang for several >> seconds, and applications that use general IO suffer extreme >> slowdowns.

This patchset expands traditional CFQ scheduler in order to support cgroups, and improves old version. Improvements are as following. * Modularizing our new CFQ scheduler. The expanded CFQ scheduler is registered/unregistered as new I/O elevator scheduler called "cfq-cgroups". By this, the traditional CFQ scheduler, which does not handle cgroups, and our new CFQ

This patchset expands traditional CFQ scheduler in order to support cgroups, and improves old version. Improvements are as following. * Modularizing our new CFQ scheduler. The expanded CFQ scheduler is registered/unregistered as new I/O elevator scheduler called "cfq-cgroups". By this, the traditional CFQ scheduler, which does not handle cgroups, and our new CFQ