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clientsCronTrackExpansiveClients() actual implementation.

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antirez 2018-07-19 13:54:15 +02:00
parent d4c5fc57db
commit 85a1b4f807
1 changed files with 14 additions and 1 deletions
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15
src/server.c
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@ -897,13 +897,26 @@ int clientsCronResizeQueryBuffer(client *c) {
* *
* When we want to know what was recently the peak memory usage, we just scan * When we want to know what was recently the peak memory usage, we just scan
* such few slots searching for the maximum value. */ * such few slots searching for the maximum value. */
#define CLIENTS_PEAK_MEM_USAGE_SLOTS 10 #define CLIENTS_PEAK_MEM_USAGE_SLOTS 8
size_t ClientsPeakMemInput[CLIENTS_PEAK_MEM_USAGE_SLOTS]; size_t ClientsPeakMemInput[CLIENTS_PEAK_MEM_USAGE_SLOTS];
size_t ClientsPeakMemOutput[CLIENTS_PEAK_MEM_USAGE_SLOTS]; size_t ClientsPeakMemOutput[CLIENTS_PEAK_MEM_USAGE_SLOTS];
int clientsCronTrackExpansiveClients(client *c) { int clientsCronTrackExpansiveClients(client *c) {
size_t in_usage = sdsAllocSize(c->querybuf); size_t in_usage = sdsAllocSize(c->querybuf);
size_t out_usage = getClientOutputBufferMemoryUsage(c); size_t out_usage = getClientOutputBufferMemoryUsage(c);
int i = server.unixtime % CLIENTS_PEAK_MEM_USAGE_SLOTS;
int j = (i+1) % CLIENTS_PEAK_MEM_USAGE_SLOTS;
/* Always zero the next sample, so that when we switch to that second, we'll
* only register samples that are greater in that second without considering
* the history of such slot. */
ClientsPeakMemInput[j] = 0;
ClientsPeakMemOutput[j] = 0;
/* Track the biggest values observed so far in this slot. */
if (in_usage > ClientsPeakMemInput[i]) ClientsPeakMemInput[i] = in_usage;
if (out_usage > ClientsPeakMemOutput[i]) ClientsPeakMemOutput[i] = out_usage;
return 0; /* This function never terminates the client. */ return 0; /* This function never terminates the client. */
} }