For security we generally restrict usage of these commands.  Are you mostly interested in "vmstat 1"?

Yes.

i'll review, but i'm not implementing.  sorry :/.

 Issue 709682  has been merged into this issue.

Justin, would you like to do this?  It would be useful.

Yep, I'd be happy to take this one.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform2/+/b0a9b6df810b26071335b3dab1640577cdbd1b3a

commit b0a9b6df810b26071335b3dab1640577cdbd1b3a
Author: Justin TerAvest <teravest@chromium.org>
Date: Tue Apr 18 05:50:25 2017

crosh: Add vmstat command

This is equivalent to running "vmstat 1".

BUG= chromium:621711 
TEST=Built/ran USB image, ran vmstat in crosh.

Change-Id: I10b7ee0fb396f38bf7177f406295f9bfab0139a9
Reviewed-on: https://chromium-review.googlesource.com/479462
Commit-Ready: Justin TerAvest <teravest@chromium.org>
Tested-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>

[modify] https://crrev.com/b0a9b6df810b26071335b3dab1640577cdbd1b3a/crosh/crosh

I checked in an initial version, but it sounds like dtor@ wants to add more flags, so I'm assigning this to him.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform2/+/536619b70368ce8a49caeccb37e439ba2ef97a16

commit 536619b70368ce8a49caeccb37e439ba2ef97a16
Author: Dmitry Torokhov <dtor@chromium.org>
Date: Sat Apr 22 04:57:48 2017

crosh: make vmstat command accept options

To better aid in understanding memory access patterns on devices not
in dev mode, let's make vmstat command accept various options.

BUG=b:36197895, chromium:621711 
TEST=Try invoking vmstat in crosh

Change-Id: If0423bc0dd23d77da111b0bfa453edb0577ea3a5
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/479133
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>

[modify] https://crrev.com/536619b70368ce8a49caeccb37e439ba2ef97a16/crosh/crosh

Seems likely we'd want this at least on M-59.  Presumably too late for M-58?

This bug requires manual review: Request affecting a post-stable build
Please contact the milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Oops.  I can't type.

Your change meets the bar and is auto-approved for M59. Please go ahead and merge the CL to branch 3071 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), gkihumba@(ChromeOS), Abdul Syed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform2/+/9e0e741702e34792aab82084e99157a717f0cd4a

commit 9e0e741702e34792aab82084e99157a717f0cd4a
Author: Justin TerAvest <teravest@chromium.org>
Date: Wed Apr 26 16:57:42 2017

crosh: Add vmstat command

This is equivalent to running "vmstat 1".

BUG= chromium:621711 
TEST=Built/ran USB image, ran vmstat in crosh.

Change-Id: I10b7ee0fb396f38bf7177f406295f9bfab0139a9
Reviewed-on: https://chromium-review.googlesource.com/479462
Commit-Ready: Justin TerAvest <teravest@chromium.org>
Tested-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>
(cherry picked from commit b0a9b6df810b26071335b3dab1640577cdbd1b3a)
Reviewed-on: https://chromium-review.googlesource.com/487864
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Commit-Queue: Dmitry Torokhov <dtor@chromium.org>
Tested-by: Dmitry Torokhov <dtor@chromium.org>

[modify] https://crrev.com/9e0e741702e34792aab82084e99157a717f0cd4a/crosh/crosh

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform2/+/83834b409dc03434ee9e8067d26dc2b8054c6672

commit 83834b409dc03434ee9e8067d26dc2b8054c6672
Author: Dmitry Torokhov <dtor@chromium.org>
Date: Wed Apr 26 17:15:02 2017

crosh: make vmstat command accept options

To better aid in understanding memory access patterns on devices not
in dev mode, let's make vmstat command accept various options.

BUG=b:36197895, chromium:621711 
TEST=Try invoking vmstat in crosh

Change-Id: If0423bc0dd23d77da111b0bfa453edb0577ea3a5
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/479133
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
(cherry picked from commit 536619b70368ce8a49caeccb37e439ba2ef97a16)
Reviewed-on: https://chromium-review.googlesource.com/487865
Reviewed-by: Douglas Anderson <dianders@chromium.org>

[modify] https://crrev.com/83834b409dc03434ee9e8067d26dc2b8054c6672/crosh/crosh