Re: [PATCH 00/17] per device dirty throttling -v7
Miklos Szeredi wrote: >> Latest version of the per bdi dirty throttling patches. >> >> Most of the changes since last time are little cleanups and more >> detail in the split out of the floating proportion into their >> own little lib. >> >> Patches are against 2.6.22-rc4-mm2 >> >> A rollup of all this against 2.6.21 is available here: >> http://programming.kicks-ass.net/kernel-patches/balance_dirty_pages/2.6.21-per_bdi_dirty_pages.patch >> >> This patch-set passes the starve an USB stick test.. > >I've done some testing of several problem cases. just curious - what are the plans towards inclusion in mainline? Cheers Martin -- Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 00/17] per device dirty throttling -v7
Miklos Szeredi wrote: Latest version of the per bdi dirty throttling patches. Most of the changes since last time are little cleanups and more detail in the split out of the floating proportion into their own little lib. Patches are against 2.6.22-rc4-mm2 A rollup of all this against 2.6.21 is available here: http://programming.kicks-ass.net/kernel-patches/balance_dirty_pages/2.6.21-per_bdi_dirty_pages.patch This patch-set passes the starve an USB stick test.. I've done some testing of several problem cases. just curious - what are the plans towards inclusion in mainline? Cheers Martin -- Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 00/17] per device dirty throttling -v7
> Latest version of the per bdi dirty throttling patches. > > Most of the changes since last time are little cleanups and more > detail in the split out of the floating proportion into their > own little lib. > > Patches are against 2.6.22-rc4-mm2 > > A rollup of all this against 2.6.21 is available here: > > http://programming.kicks-ass.net/kernel-patches/balance_dirty_pages/2.6.21-per_bdi_dirty_pages.patch > > This patch-set passes the starve an USB stick test.. I've done some testing of several problem cases. 1) fuse writable mmap patches + bash_shared_mapping 2) writes in a setup involving a loop dev a) ext3 over loop over ext3 b) ext3 over loop over fuse-passthrough over ext3 c) ext3 over loop over ntfs-3g Without the patch, in all the cases I've seen deadlocks or long stalls. With the patch, I could not reproduce this in any of the cases. As predicted, the patch is performing well in this respect :) 2a is the simplest to reproduce (2.6.22, dual core, 1GB ram) dd if=/dev/zero of=/tmp/p5 bs=1M seek=4999 count=1 mkfs.ext3 -F /tmp/p5 mkdir /tmp/m5 mount -oloop /tmp/p5 /tmp/m5 dd if=/dev/zero of=/tmp/m5/foo bs=1M count=4000 The second dd can stall for indefinite amounts of time. Kicking it with sync can get it moving, but it relapses after some time. Even with the per-device-throttling patch, case 2 shows an nr_dirty elevated far above the 10% limit, reaching 40% or higher. I believe, this is due to a missing balance_dirty_pages() call in the loop device. And indeed the anomaly can be solved by adding this patch: http://lkml.org/lkml/2007/3/24/101 Miklos - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 00/17] per device dirty throttling -v7
Latest version of the per bdi dirty throttling patches. Most of the changes since last time are little cleanups and more detail in the split out of the floating proportion into their own little lib. Patches are against 2.6.22-rc4-mm2 A rollup of all this against 2.6.21 is available here: http://programming.kicks-ass.net/kernel-patches/balance_dirty_pages/2.6.21-per_bdi_dirty_pages.patch This patch-set passes the starve an USB stick test.. I've done some testing of several problem cases. 1) fuse writable mmap patches + bash_shared_mapping 2) writes in a setup involving a loop dev a) ext3 over loop over ext3 b) ext3 over loop over fuse-passthrough over ext3 c) ext3 over loop over ntfs-3g Without the patch, in all the cases I've seen deadlocks or long stalls. With the patch, I could not reproduce this in any of the cases. As predicted, the patch is performing well in this respect :) 2a is the simplest to reproduce (2.6.22, dual core, 1GB ram) dd if=/dev/zero of=/tmp/p5 bs=1M seek=4999 count=1 mkfs.ext3 -F /tmp/p5 mkdir /tmp/m5 mount -oloop /tmp/p5 /tmp/m5 dd if=/dev/zero of=/tmp/m5/foo bs=1M count=4000 The second dd can stall for indefinite amounts of time. Kicking it with sync can get it moving, but it relapses after some time. Even with the per-device-throttling patch, case 2 shows an nr_dirty elevated far above the 10% limit, reaching 40% or higher. I believe, this is due to a missing balance_dirty_pages() call in the loop device. And indeed the anomaly can be solved by adding this patch: http://lkml.org/lkml/2007/3/24/101 Miklos - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 00/17] per device dirty throttling -v7
> On Thu, 14 Jun 2007 23:58:17 +0200 Peter Zijlstra <[EMAIL PROTECTED]> wrote: > Latest version of the per bdi dirty throttling patches. Thanks. I've got some travel coming up and will be rather intermittent and laggy for a week or two. I'll save this patchset for when the in-flight movies get dull ;) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 00/17] per device dirty throttling -v7
Latest version of the per bdi dirty throttling patches. Most of the changes since last time are little cleanups and more detail in the split out of the floating proportion into their own little lib. Patches are against 2.6.22-rc4-mm2 A rollup of all this against 2.6.21 is available here: http://programming.kicks-ass.net/kernel-patches/balance_dirty_pages/2.6.21-per_bdi_dirty_pages.patch This patch-set passes the starve an USB stick test.. -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 00/17] per device dirty throttling -v7
Latest version of the per bdi dirty throttling patches. Most of the changes since last time are little cleanups and more detail in the split out of the floating proportion into their own little lib. Patches are against 2.6.22-rc4-mm2 A rollup of all this against 2.6.21 is available here: http://programming.kicks-ass.net/kernel-patches/balance_dirty_pages/2.6.21-per_bdi_dirty_pages.patch This patch-set passes the starve an USB stick test.. -- - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 00/17] per device dirty throttling -v7
On Thu, 14 Jun 2007 23:58:17 +0200 Peter Zijlstra [EMAIL PROTECTED] wrote: Latest version of the per bdi dirty throttling patches. Thanks. I've got some travel coming up and will be rather intermittent and laggy for a week or two. I'll save this patchset for when the in-flight movies get dull ;) - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
