SSMDD.SYS: Difference between revisions
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{{ProdS |V21=S|V22=S|V30=S|V31=S|V40=S|V45=S}} | {{ProdS |V21=S|V22=S|V30=S|V31=S|V40=S|V45=S}} | ||
SSMDD.SYS is the Ring 0 device driver of the Sync/Stream Manager. The Sync/Stream Manager is comprised of two modules: SSMDD.SYS and [[SSM.DLL]]. | SSMDD.SYS is the Ring 0 device driver of the Sync/Stream Manager. The Sync/Stream Manager is comprised of two modules: SSMDD.SYS and [[SSM.DLL]]. | ||
==Version== | ==Version== | ||
| Line 9: | Line 9: | ||
|} | |} | ||
==CONFIG.SYS | ==CONFIG.SYS== | ||
DEVICE=\MMOS2\SSMDD.SYS <parameter> | DEVICE=\MMOS2\SSMDD.SYS <parameter> | ||
==Parameter== | ==Parameter== | ||
; /S:sss | ; /S:sss | ||
: Specifies the number of streams that can be created at the same time. Values range from 1 through 64. The default value for machines with more than | :Specifies the number of streams that can be created at the same time. Values range from 1 through 64. The default value for machines with more than 8 MB of memory is 12. The default value for machines with 8 MB of memory or less is 6. | ||
; /P:ppp | ; /P:ppp | ||
: Specifies the number of processes that can create streams at the same time. Values range from 1 through 64. The default value for machines with more than | :Specifies the number of processes that can create streams at the same time. Values range from 1 through 64. The default value for machines with more than 8 MB of memory is 12. The default value for machines with 8 MB of memory or less is 6. | ||
; /H:hhh | ; /H:hhh | ||
: Specifies the maximum amount of heap space (KB) that will be used. Values range from 16 through 256; the default value is 64. | :Specifies the maximum amount of heap space (KB) that will be used. Values range from 16 through 256; the default value is 64. | ||
; /Q:qqq | ; /Q:qqq | ||
: Specifies the size of the event queue (per process). Values range from 2 through 1024; the default value is 64. | :Specifies the size of the event queue (per process). Values range from 2 through 1024; the default value is 64. | ||
; /E:eee | ; /E:eee | ||
: Specifies the number of events that can be enabled (per stream). Values range from 1 through 1024. The default value for machines with more than | :Specifies the number of events that can be enabled (per stream). Values range from 1 through 1024. The default value for machines with more than 8 MB of memory is 32. The default value for machines with 8 MB of memory or less is 20. | ||
;Note: The DEVICE=SSMDD.SYS statement must appear as the first Ring 0 stream handler statement in CONFIG.SYS. | |||
Sync/Stream Resource Limits | Sync/Stream Resource Limits | ||
* The maximum number of streams is 64. | * The maximum number of streams is 64. | ||
* The maximum number of streams in a sync group is 64. | * The maximum number of streams in a sync group is 64. | ||
* The maximum number of processes controlling streams is 64. | * The maximum number of processes controlling streams is 64. | ||
* The maximum size of Sync/Stream Manager event queue per process is 1024 entries. | * The maximum size of Sync/Stream Manager event queue per process is 1024 entries. | ||
'''Example:''' | '''Example:''' | ||
DEVICE=C:\MMOS2\SSMDD.SYS /S:64 /P:64 /H:256 /Q:1024 /E:1024 | DEVICE=C:\MMOS2\SSMDD.SYS /S:64 /P:64 /H:256 /Q:1024 /E:1024 | ||
[[Category:Multimedia Device Drivers]] | [[Category:Multimedia Device Drivers]] | ||
Latest revision as of 21:59, 5 November 2022
| Product Support | |
|---|---|
| OS/2 1.3 | |
| OS/2 2.0 | |
| OS/2 2.1 | S |
| OS/2 2.11 SMP | S |
| OS/2 Warp 3 | S |
| OS/2 Warp Connect | S |
| OS/2 Warp 4 | S |
| OS/2 Warp Server for e-Business | S |
SSMDD.SYS is the Ring 0 device driver of the Sync/Stream Manager. The Sync/Stream Manager is comprised of two modules: SSMDD.SYS and SSM.DLL.
Version
| Date | Version | Size | Comments |
|---|---|---|---|
| 2001-07-26 | 36,813 bytes |
CONFIG.SYS
DEVICE=\MMOS2\SSMDD.SYS <parameter>
Parameter
- /S:sss
- Specifies the number of streams that can be created at the same time. Values range from 1 through 64. The default value for machines with more than 8 MB of memory is 12. The default value for machines with 8 MB of memory or less is 6.
- /P:ppp
- Specifies the number of processes that can create streams at the same time. Values range from 1 through 64. The default value for machines with more than 8 MB of memory is 12. The default value for machines with 8 MB of memory or less is 6.
- /H:hhh
- Specifies the maximum amount of heap space (KB) that will be used. Values range from 16 through 256; the default value is 64.
- /Q:qqq
- Specifies the size of the event queue (per process). Values range from 2 through 1024; the default value is 64.
- /E:eee
- Specifies the number of events that can be enabled (per stream). Values range from 1 through 1024. The default value for machines with more than 8 MB of memory is 32. The default value for machines with 8 MB of memory or less is 20.
- Note
- The DEVICE=SSMDD.SYS statement must appear as the first Ring 0 stream handler statement in CONFIG.SYS.
Sync/Stream Resource Limits
- The maximum number of streams is 64.
- The maximum number of streams in a sync group is 64.
- The maximum number of processes controlling streams is 64.
- The maximum size of Sync/Stream Manager event queue per process is 1024 entries.
Example:
DEVICE=C:\MMOS2\SSMDD.SYS /S:64 /P:64 /H:256 /Q:1024 /E:1024