Function clientsCronTrackExpansiveClients

src/server.cpp:1916–1926

size_t ClientsPeakMemOutput[CLIENTS_PEAK_MEM_USAGE_SLOTS] = {0};

int clientsCronTrackExpansiveClients(client *c, int time_idx) {
    size_t in_usage = sdsZmallocSize(c->querybuf) + c->argv_len_sum() +
	              (c->argv ? zmalloc_size(c->argv) : 0);
    size_t out_usage = getClientOutputBufferMemoryUsage(c);

    /* Track the biggest values observed so far in this slot. */
    if (in_usage > ClientsPeakMemInput[time_idx]) ClientsPeakMemInput[time_idx] = in_usage;
    if (out_usage > ClientsPeakMemOutput[time_idx]) ClientsPeakMemOutput[time_idx] = out_usage;

    return 0; /* This function never terminates the client. */
}

/* Iterating all the clients in getMemoryOverheadData() is too slow and
 * in turn would make the INFO command too slow. So we perform this