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Fix formatting, remove bad line.

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This commit is contained in:
Brenden Matthews 2021-02-05 08:44:00 -06:00
parent c2c9e07afc
commit 91a3f2ed87
1 changed files with 17 additions and 17 deletions
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34
src/linux.cc
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@ -247,26 +247,26 @@ int update_meminfo(void) {
*/
curmem -= curbufmem;
cureasyfree += curbufmem;
#else
# curmem = info.memmax - memavail;
#else /* LINUX_VERSION_CODE <= KERNEL_VERSION(3, 14, 0) */
/* The memory available field is describe in /proc man page as :
* "An estimate of how much memory is available for starting new applications, without swapping."
* We can see in page_alloc.c in the linux kernel that :
* "Not all the page cache can be freed, otherwise the system will start swapping.
* Assume at least half of the page cache, or the low watermark worth of cache, needs to stay."
* There is a difference between the system starts swapping and OOM happens even if there is no swap
* on the system.
* People think they will find the same amount of used RAM with the free program.
* From man free, we can see :
* used Used memory (calculated as total - free - buffers - cache)
* free Unused memory (MemFree and SwapFree in /proc/meminfo)
* buffers Memory used by kernel buffers (Buffers in /proc/meminfo)
* cache Memory used by the page cache and slabs (Cached and SReclaimable in /proc/meminfo)
* So, curmem should be calculate as follow to find the same amount of memory in conky and free.
* "An estimate of how much memory is available for starting new
* applications, without swapping." We can see in page_alloc.c in the linux
* kernel that : "Not all the page cache can be freed, otherwise the system
* will start swapping. Assume at least half of the page cache, or the low
* watermark worth of cache, needs to stay." There is a difference between
* the system starts swapping and OOM happens even if there is no swap on
* the system. People think they will find the same amount of used RAM with
* the free program. From man free, we can see : used Used memory
* (calculated as total - free - buffers - cache) free Unused memory
* (MemFree and SwapFree in /proc/meminfo) buffers Memory used by kernel
* buffers (Buffers in /proc/meminfo) cache Memory used by the page cache
* and slabs (Cached and SReclaimable in /proc/meminfo) So, curmem should be
* calculate as follow to find the same amount of memory in conky and free.
*/
curmem = info.memmax - (info.memfree + info.buffers + info.cached + sreclaimable);
curmem = info.memmax -
(info.memfree + info.buffers + info.cached + sreclaimable);
cureasyfree += curbufmem;
#endif
#endif /* LINUX_VERSION_CODE <= KERNEL_VERSION(3, 14, 0) */
}
/* Now that we know that every calculation is finished we can wrap up