Download/kernel/rhel6-testing/042stab072.2/changes - Revision history

Kir: Kir moved page Download/kernel/rhel6-testing/042stab071.2/changes to Download/kernel/rhel6-testing/042stab072.2/changes without leaving a redirect: It's 072.2 now )

2012-12-24T23:14:37Z

Kir moved page Download/kernel/rhel6-testing/042stab071.2/changes to Download/kernel/rhel6-testing/042stab072.2/changes without leaving a redirect: It's 072.2 now )

Kir: it's now 072.2, added 071 to 072 changes

2012-12-24T23:14:19Z

it's now 072.2, added 071 to 072 changes

Kir: Kir moved page Download/kernel/rhel6-testing/042stab071.1/changes to Download/kernel/rhel6-testing/042stab071.2/changes without leaving a redirect: it's 071.2 now

2012-12-24T22:56:20Z

Kir moved page Download/kernel/rhel6-testing/042stab071.1/changes to Download/kernel/rhel6-testing/042stab071.2/changes without leaving a redirect: it's 071.2 now

Kir: 071.2 now

2012-12-24T22:55:55Z

071.2 now

Kir: it's indeed enchanted!

2012-12-18T15:20:59Z

it's indeed enchanted!

Kir: move page cache isolation description to a separate page

2012-12-17T20:06:26Z

move page cache isolation description to a separate page

Kir: I guess our memory scheduler is not enchanted. Yet.

2012-12-17T18:10:24Z

I guess our memory scheduler is not enchanted. Yet.

Kir: fixed changelog for 068.7 and 068.8

2012-12-17T17:59:56Z

fixed changelog for 068.7 and 068.8

Kir: created

2012-12-14T19:15:30Z

created

New page

== Changes ==
Since {{kernel link|rhel6-testing|042stab070.11}}:





* [ubc/mm] A new strict page cache isolation feature (PSBM-16955)
** This feature disables bouncing pagecache pages between host and containers on physpages shortage in container. Internal reclaimer will drop cached data if container exceeded its physpages limit and pagecache isolation turned on.
** Current state: /proc/bc/<id>/debug:pagecache_isolation (disabled by default)
** sysctls:
*** ubc.pagecache_isolation = 0|1 turn off|on isolation for all containers
*** ubc.pagecache_isolation_on = <id> turn on for container <id> (write only)
*** ubc.pagecache_isolation_off = <id> turn off for container <id> (write only)

* [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] enchanted 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)

* [mm] a new formula has been implemented for pagecache reclaimer, the reclaimer should become more indulgent for small Containers with old pages
** + some stats is visible now in /proc/meminfo and /proc/bc/*/meminfo in case ve.meminfo==2 (PSBM-15799)


* [fuse] a missed fuse_file_put() has been added
* [mm] a panic while using huge tables has been fixed (PSBM-17315)

@@ Line 1: / Line 1: @@
 == Changes ==
-This is a merge between 068.8 and 070.11 kernels, adding the features of 068.8 into 070.11 kernel, plus some bug fixes on top of that.
+<!-- 071.1 is a merge between 068.8 and 070.11 kernels, adding the features of 068.8 into 070.11 kernel -->
 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. -->
+* Rebase to RHEL6.3 kernel 2.6.32-279.19.1.el6 (security and bug fixes, see link below)
 <!-- 065.5 -->
 <!-- 065.6 -->
@@ Line 30: / Line 29: @@
 * [mm] a panic while using huge tables has been fixed (PSBM-17315)
 <!-- 071.2 -->
 * [mm] do not force scanning top priority lru vectors, this could result into forced push anon memory to swap (PSBM-17443)
 * [mm] struct gang size decreased to 16Kb, this should eliminate often memory allocation failures on CT start (PSBM-17433)
@@ Line 35: / Line 47: @@
 * [fs] CT O_DIRECT and fsync settings checks have been corrected (PSBM-17157)
 * [pfcache] fix using uninitialized data on pfcache mounting

← Older revision	Revision as of 23:14, 24 December 2012
(No difference)

← Older revision	Revision as of 22:56, 24 December 2012
(No difference)

@@ Line 15: / Line 15: @@
 * [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)
+* [pagecache] enchanted version of memory scheduler: shadow gangs, reclaimer takes timestamps into the consideration, etc. (PSBM-15796)
 <!-- 068.3 -->
 * [ubc/dcache] fix endless oom postponing in dcache reclaimer (PSBM-17067, PSBM-17069)

@@ Line 1: / Line 1: @@
 == Changes ==
 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. -->
@@ Line 6: / Line 8: @@
 <!-- 065.7 -->
 <!-- 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]])
 <!-- 067.2 -->
 * [mm] per-bc pagecache should be shrinked proportionally now (PSBM-15799)
@@ Line 36: / Line 32: @@
 <!-- 068.7 was a "side" kernel -->
 <!-- 068.8 -->
 <!-- 070.12 -->
 * [fuse] a missed fuse_file_put() has been added
 * [mm] a panic while using huge tables has been fixed (PSBM-17315)

@@ Line 34: / Line 34: @@
 <!-- 068.6 -->
 * [mm] deadlock in kswapd near oom condition has been fixed (PSBM-17100)
-<!-- 068.7 -->
+<!-- 068.7 was a "side" kernel -->
-* [mm] a new formula has been implemented for pagecache reclaimer, the reclaimer should become more indulgent for small Containers with old pages
+<!-- 068.8 -->
-** + some stats is visible now in /proc/meminfo and /proc/bc/*/meminfo in case ve.meminfo==2 (PSBM-15799)
+* [devpts] handle dentry allocation failure properly in devpts_pty_new() ({{B|1758}})
 <!-- 070.12 -->
 * [fuse] a missed fuse_file_put() has been added
 * [mm] a panic while using huge tables has been fixed (PSBM-17315)