Difference between revisions of "Download/kernel/rhel6-testing/042stab072.2/changes"
< Download | kernel | rhel6-testing | 042stab072.2
(I guess our memory scheduler is not enchanted. Yet.) |
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== Changes == | == Changes == | ||
| + | This is a merge between 068.8 and 070.11 kernels, adding the features of 068.8 into 070.11 kernel. | ||
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Since {{kernel link|rhel6-testing|042stab070.11}}: | Since {{kernel link|rhel6-testing|042stab070.11}}: | ||
<!-- This is a merge between 068.x branch and 070.x branch. 071.1 kernel contains all patches from 068.8 and 070.12 kernels. --> | <!-- This is a merge between 068.x branch and 070.x branch. 071.1 kernel contains all patches from 068.8 and 070.12 kernels. --> | ||
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<!-- 065.7 --> | <!-- 065.7 --> | ||
<!-- 067.1 --> | <!-- 067.1 --> | ||
| − | * [ubc/mm] A new strict page cache isolation feature (PSBM-16955 | + | * [ubc/mm] A new strict page cache isolation feature (PSBM-16955, see [[Page cache isolation]]) |
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<!-- 067.2 --> | <!-- 067.2 --> | ||
* [mm] per-bc pagecache should be shrinked proportionally now (PSBM-15799) | * [mm] per-bc pagecache should be shrinked proportionally now (PSBM-15799) | ||
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<!-- 068.7 was a "side" kernel --> | <!-- 068.7 was a "side" kernel --> | ||
<!-- 068.8 --> | <!-- 068.8 --> | ||
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<!-- 070.12 --> | <!-- 070.12 --> | ||
* [fuse] a missed fuse_file_put() has been added | * [fuse] a missed fuse_file_put() has been added | ||
* [mm] a panic while using huge tables has been fixed (PSBM-17315) | * [mm] a panic while using huge tables has been fixed (PSBM-17315) | ||
Revision as of 20:06, 17 December 2012
Changes
This is a merge between 068.8 and 070.11 kernels, adding the features of 068.8 into 070.11 kernel.
Since 042stab070.11:
- [ubc/mm] A new strict page cache isolation feature (PSBM-16955, see Page cache isolation)
- [mm] per-bc pagecache should be shrinked proportionally now (PSBM-15799)
- [mm] debug trace events has been added into shrink_zone and shrink_gang
- [dcache] introduce per-bc dcache lru lists with real time shrink. Underlying dcache can be immediately shrunk if sysctl "ubc.dcache_no_vzfs_cache" is set (PSBM-16072)
- [vSwap] virtual vSwap feature has been introduced => now vSwap does not require free physical swap on the HN (PSBM-16764)
- [pagecache] enhanced version of memory scheduler: shadow gangs, reclaimer takes timestamps into the consideration, etc. (PSBM-15796)
- vmscan priority is calculated for all LRU vectors according to its memory usage/limit and age of LRU lists.
- sysctls:
- vm.usage_factor (default 2)
- vm.shadow_factor (default 8)
- vm.age_factor (default 8)
- priority = 12 + usage * usage_factor / limit + shadow * shadow_factor / limit (for shadow part only) + age * age_factor / max_age
- [ubc/dcache] fix endless oom postponing in dcache reclaimer (PSBM-17067, PSBM-17069)
- [mm] the number of vmscan prios has been increased from 25 to 42. vmscan iterator has been fixed. (PSBM-15799)
- [cpt] kernel panic has been fixed due to DEAD task restoration attempt (PCLIN-30483, PSBM-17107)
- [mm] deadlock in kswapd near oom condition has been fixed (PSBM-17100)
- [fuse] a missed fuse_file_put() has been added
- [mm] a panic while using huge tables has been fixed (PSBM-17315)
