configure: improve static zlib package warning

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 78fa6ccf4a61e623a44c0e1137f46cc416382ee8..f91a22eb10acc72aa2246f2ebd50e06c1e1b0ad8 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1093,8 +1093,9 @@ I/O type
 
 .. option:: fadvise_hint=str
 
 
 .. option:: fadvise_hint=str
 

-       Use :manpage:`posix_fadvise(2)` to advise the kernel on what I/O patterns
-       are likely to be issued.  Accepted values are:
+       Use :manpage:`posix_fadvise(2)` or :manpage:`posix_fadvise(2)` to
+       advise the kernel on what I/O patterns are likely to be issued.
+       Accepted values are:

 
                **0**
                        Backwards-compatible hint for "no hint".
 
                **0**
                        Backwards-compatible hint for "no hint".


@@ -1809,6 +1810,11 @@ I/O engine
                        I/O engine that does regular EXT4_IOC_MOVE_EXT ioctls to simulate
                        defragment activity in request to DDIR_WRITE event.
 
                        I/O engine that does regular EXT4_IOC_MOVE_EXT ioctls to simulate
                        defragment activity in request to DDIR_WRITE event.
 

+               **rados**
+                       I/O engine supporting direct access to Ceph Reliable Autonomic
+                       Distributed Object Store (RADOS) via librados. This ioengine
+                       defines engine specific options.
+

                **rbd**
                        I/O engine supporting direct access to Ceph Rados Block Devices
                        (RBD) via librbd without the need to use the kernel rbd driver. This
                **rbd**
                        I/O engine supporting direct access to Ceph Rados Block Devices
                        (RBD) via librbd without the need to use the kernel rbd driver. This


@@ -2010,7 +2016,7 @@ with the caveat that when used on the command line, they must come after the
                Allocate space immediately inside defragment event, and free right
                after event.
 
                Allocate space immediately inside defragment event, and free right
                after event.
 

-.. option:: clustername=str : [rbd]
+.. option:: clustername=str : [rbd,rados]

 
        Specifies the name of the Ceph cluster.
 
 
        Specifies the name of the Ceph cluster.
 


@@ -2018,17 +2024,22 @@ with the caveat that when used on the command line, they must come after the
 
        Specifies the name of the RBD.
 
 
        Specifies the name of the RBD.
 

-.. option:: pool=str : [rbd]
+.. option:: pool=str : [rbd,rados]

 
 

-       Specifies the name of the Ceph pool containing RBD.
+       Specifies the name of the Ceph pool containing RBD or RADOS data.

 
 

-.. option:: clientname=str : [rbd]
+.. option:: clientname=str : [rbd,rados]

 
        Specifies the username (without the 'client.' prefix) used to access the
        Ceph cluster. If the *clustername* is specified, the *clientname* shall be
        the full *type.id* string. If no type. prefix is given, fio will add
        'client.' by default.
 
 
        Specifies the username (without the 'client.' prefix) used to access the
        Ceph cluster. If the *clustername* is specified, the *clientname* shall be
        the full *type.id* string. If no type. prefix is given, fio will add
        'client.' by default.
 

+.. option:: busy_poll=bool : [rbd,rados]
+
+        Poll store instead of waiting for completion. Usually this provides better
+        throughput at cost of higher(up to 100%) CPU utilization.
+

 .. option:: skip_bad=bool : [mtd]
 
        Skip operations against known bad blocks.
 .. option:: skip_bad=bool : [mtd]
 
        Skip operations against known bad blocks.